29–31 March 2012

2012 Program 

CORDILLERAN 

GSA Section Meeting 

29–31 March 2012 

Vol. 44, No. 3 

Misión Hotel Juriquilla 

Querétaro, México 

Spectacular skies over Querétaro, México. 

Photo by Michelangelo Martini.

108th Annual Meeting 

Cordilleran Section of The Geological Society of America 

28 2012 GSA Abstracts with Programs 

Hosted by 

Centro de Geociencias and Instituto de Geología 

Universidad Nacional Autónoma de México 

Cordilleran Section GSA Officers for 2012 

Chair: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calvin G . Barnes 

Past Chair: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Luca Ferrari 

Vice Chair: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jonathan S . Miller 

Secretary-Treasurer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Rodney V . Metcalf 

Local Committee for the 2012 Meeting 

General Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Luca Ferrari 

General Co-Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Teresa Orozco Esquivel 

Technical Program Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Dante Morán Zenteno 

Field Trips Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jorge Aranda Gómez 

Student Volunteers Coordinator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mariano Cerca Martínez 

Exhibits Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Claudia Mendoza 

Sponsorships/Donations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Elena Centeno García 

50% Total Recovered Fiber 

10% Post-Consumer

Welcome to the 108 th annual meeting of the Cordilleran 

Section of The Geological Society of America, hosted by 

Centro de Geociencias and Instituto de Geología of the 

Universidad Nacional Autónoma de México . The meeting 

theme “The Southern Cordillera and Beyond” emphasizes the 

fact that geology does not stop at the U .S . border . Canada, 

the United States, and Mexico share the same tectonic plate 

and also face similar environmental and resource problems . 

In an effort to promote a more active communication among 

geologists from the three countries, the 108th meeting of the 

GSA Cordilleran Section is being held in Querétaro, central 

Mexico, at Hotel Misión Juriquilla . 

Querétaro lies at the crossroads of three main geologic 

provinces: the Neogene Trans-Mexican Volcanic Belt, the 

mid-Tertiary Sierra Madre Occidental silicic large igneous 

province, and the Cretaceous-Paleocene Sierra Madre 

Oriental fold-thrust belt . The urban area occupies a continental 

basin bounded by the intersection of two late Tertiary 

extensional fault systems affecting late Miocene and early 

Pliocene volcanic rocks . Classic fossils sites with Hemphillian 

to Blancan vertebrate fauna are located only 25-30 miles to 

the north . 

Mexico is a key region for understanding the geologic 

evolution of North America as well as an important tectonic 

element that interacted with South America and the 

Caribbean . The meeting will focus on the advances in the 

geology of the Southern Cordillera, including such topics as 

silicic magmatism, rifting of the Gulf of California and Gulf 

of Mexico, the Laramide fold and thrust belt, the Trans- 

Mexican Volcanic Belt and the Middle America subduction 

zone, and Caribbean interaction with North and South 

America . The meeting will also host a symposium on the 

Amalgamation and Breakup of Pangea (IGCP Project 597), 

along with an array of applied theme sessions on water management, 

soils subsidence and fracturing, ore geology, and 

geothermics . 

Venue 

Located in the geographic center of Mexico, Querétaro 

is a modern industrial city, built around a beautiful colonial 

center . The meeting is being held at Hotel Misión Juriquilla, 

which occupies the main building of an 18 th century hacienda 

and includes large patios, two restaurants, a pool, and 

a spa . The hotel is located just 15 km away from the historic 

downtown, which was declared a World Heritage Site by 

UNESCO, for the exceptional examples of baroque architecture 

and for having retained the geometric street plan of the 

Spanish conquerors side by side with the twisting alleys of the 

Indian quarters . 

General Information 

Transportation and Directions 

Querétaro is located 140 miles northwest of Mexico City . 

The Querétaro International Airport has direct flights from 

Houston (Continental), Dallas (American), and Monterrey, 

Mexico (AeroMexico) . Taxi fare from the Querétaro airport 

to Hotel Misión Juriquilla is ~US$25 . A direct shuttle bus 

connects Mexico City International Airport to Querétaro’s 

bus station for ~US$22 (see primeraplus .com .mx) . Hotel 

Misión Juriquilla is located 15 km north of Querétaro city, off 

the Juriquilla exit of Highway 57 . Taxi fare from Queretaro 

downtown to Hotel Misión Juriquilla is ~$US 8 . 

Free bus transport between Querétaro downtown and 

Hotel Misión Juriquilla is provided during the meeting . In 

downtown, bus departs from the Alameda (at the corner 

of Corregidora and Constituyentes) following a route along 

Constituyentes Av ., and 5 de Febrero Av . (see map) . If you 

plan to use this bus transport, please contact Teresa Orozco, 

torozco@geociencias .unam .mx . 

Bus time schedule: 

Downtown- Juriquilla- 

Juriquilla Downtown 

Wednesday, 28 4 p .m . 8:15 p .m . 

Thursday, 29 7:45 a .m . 6:45 p .m . 

Friday, 30 7:45 a .m . 6:45 p .m .*/ 8:45 p .m .** 

Saturday, 31 7:45 a .m . 1:15 p .m . 

* For people attending the Keynote Address, bus will stop at 

UNAM Campus before riding to Querétaro downtown . 

** Bus will depart from UNAM Campus and will stop at 

Hotel Misión Juriquilla before riding to Querétaro downtown . 

Accommodations 

A block of rooms is reserved at a discounted rate at the 

Hotel Misión Juriquilla, Blvd . Villas del Mesón 56, Juriquilla, 

76230 Querétaro . To qualify for special meeting rates, please 

identify yourself as a GSA attendee . Reservation can be made 

by email (reservaciones@misionqueretaro .com), phone +52 

(442) 234-0000, or online at http://www .hotelesmision .com/ 

Home .aspx?Preserve=1, using the promotional code “GSA”. 

Information about other hotels is available on the web site of 

the Querétaro Tourism Office: http://www .queretaro .travel/ . To 

avoid transport problems, we suggest staying in the meeting 

hotel or in Querétaro downtown, from where free bus transport 

will be offered . 

2012 GSA Cordilleran Section Meeting 29

Hotel Misión 

Juriquilla 

Juriquilla 

Lake 

Plaza 

Naútica 


Villas del Mesón 

1. Registration 6. Mariposa 1 (upstairs) 

2. Gobernador 6. Mariposa 2 

3. Goyesco 1 7. Siglo XVIII 

4. Juárez 1-2 8. Siglo XVIII annexe 

5. Juárez 3 9. Parián 

Chapel 

3 

3 

Plaza 

Amarras 

Blvd. Juriquilla 

Plaza 

Juriquilla 

Centro 

Académico y 

Cultural, UNAM 

Plaza del 

Claustro 

2 

Plaza El Pueblito 

UNAM 

Campus 

1 

6 

Commercial areas 

with restaurants 

Banks 

Route from Querétaro 

to San Luis Potosí 

MEX 

57 

200 m 

500 ft 

4 5 

Corridor 

8 

9 

7 

Parking

Dining 

Hotel Misión Juriquilla houses two restaurants; the 

Aranjuez and the Mavericks . Also, a variety of restaurants 

and bars are located within walking distance from the hotel 

(see map) . The Centro Académico Cultural at UNAM 

Campus (~1 .5 km away) has an inexpensive dinning facility . 

Registration 

Registration is required to participate in any event at 

the meeting, including technical sessions, symposia, field 

trips, exhibits, special meetings, and planned social events . 

Registration badges must be worn for access to all activities, 

and guest registration is required for attendance at the 

welcoming reception, scheduled lunches, and field trips . A 

current student ID is required to obtain student registration 

rates . 

On-site registration and badge pick-up is located in corridor 

in front of Juárez 1 room, and is open at the following 

times: 

Wednesday, 28 March 2–7 p .m . 

Thursday, 29 March 8 a .m .–6 p .m . 

Friday, 30 March 8 a .m .–6 p .m . 

Saturday, 31 March 8 a .m .–noon 

On-site Registration Fees (US dollars) 

Type Full Meeting One-Day 

Professional member . . . . . . . . . . . . . . . . . . . . $190 . . . . . . . . . . . . . . . . .$110 

Professional member 70+ . . . . . . . . . . . . . $120 . . . . . . . . . . . . . . . . . . . .n/a 

Professional non-member . . . . . . . . . . . . . $210 . . . . . . . . . . . . . . . . .$170 

Student member . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $80 . . . . . . . . . . . . . . . . . . .$55 

Student non-member . . . . . . . . . . . . . . . . . . . $100 

Guest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $80 

Field Trip only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $35 

Cancellations, Changes, and Refunds 

Requests for cancellations must have been received in 

writing at GSA Headquarters by 5 March 2012 . No refunds 

will be made on cancellation notices received after this date . 

Refunds will be mailed from GSA after the meeting; refunds 

for fees paid by credit card will be credited to the card identified 

on the registration form . GSA cannot provide refunds for 

on-site registration, the Abstracts with Programs book, and 

event ticket sales . 

Student Volunteers 

All student volunteers are required to check in with 

the Student Volunteer Coordinator Mariano Cerca in the 

Speaker Ready Room (Gobernador Room) or at the GSA 

registration desk in the corridor in front of Juárez 1 room . 

Training for volunteer activity is included in the required 

six- hour shift and is taking place on Wednesday at noon in 

Mariposa 1 Room . 

Welcoming Reception 

The welcoming reception will be held Wednesday 28 

March, 6-8 p .m . in the Parián at Plaza El Pueblito . Student 

posters and exhibit booths will be open from the first hour of 

the welcoming reception (5-9 p .m .) . Hors d’oeuvres and one 

complimentary drink at the opening reception are included 

with each registration . A cash bar will also be available . 

Exhibits 

Exhibits are located in the Juárez 1-2 Room, and are open 

at the following times: 

Wednesday, 28 March 5–7 p .m . (exhibits opening) 

Thursday, 29 March 8:30 a .m .–6 p .m . 

Friday, 30 March 8:30 a .m .–6 p .m . 

Saturday, 31 March 8:30 a .m .–1 p .m . 

Undergraduate and Graduate Student Presentation 

Awards 

To recognize exceptional work, the Cordilleran Section is 

offering awards for outstanding oral and poster presentation 

to both graduate and undergraduate students . 

Mentoring programs 

Sponsored by the GSA Foundation. For more information, 

contact Jennifer Nocerino at jnocerino@geosociety .org . 

Roy J. Shlemon Mentor Program in Applied Geoscience. 

Thursday, 29 March 2012, 1–2:30 p .m . Room Siglo XVIII 

annexe . This program is designed to extend the mentoring 

reach of individual professionals from applied geology to 

undergraduates and graduate students attending GSA Section 

Meetings . Over free lunches, mentors and students discuss 

professional opportunities and challenges that await students 

after graduation . Every registered student receives a ticket 

to the Shlemon Luncheon along with his/her badge . Please 

arrive early as attendance is limited to the space available . 

The John Mann Mentors in Applied Hydrogeology 

Program. Friday, 30 March 2012, 1 -2:30 p .m . Room Siglo 

XVIII annexe . The Mann Mentors in Applied Hydrogeology 

Program presents mentoring opportunities for undergraduate 

and graduate students as well as recent graduates with 

a declared interest in applied hydrogeology as a career to 

interact and network with practicing hydrogeology professionals 

. This relaxed but focused small-scale event features a 

free lunch for student(s) and mentors . Every student receives 

a ticket to the Mann Luncheon along with his/her badge . 

Please arrive early as attendance is limited to the space 

available . 

GSA Town Hall Meeting . Thursday, 29 March, 5:30– 

6:30 p .m . Room Siglo XVIII . All meeting attendees are invited 

to this event to discuss the the Society’s future . Moderated 

by a member of the GSA Executive Board . Learn more about 

GSA and GSA’s strategic plan at http://www .geosociety .org/ 

aboutus/index .htm . A cash bar is available . 


Cordilleran Section GSA Annual Business Meeting. 

Friday, 30 March, 5:30–6:30 p .m . Mariposa 2 room . All 

Cordilleran members are invited to meet the management 

board in this annual meeting where the new chair is appointed 

for the 2012–2013 period . 

Technical Sessions 

The technical program consists of a symposium, theme 

sessions and general discipline sessions . Sessions are scheduled 

for oral and poster presentations beginning 8:30 a .m . 

Thursday, 29 March, and concluding at 12:50 a .m . Saturday, 

31 March . All oral and poster sessions are in the Conference 

area of Hotel Misión Juriquilla . 

Most of the oral sessions consist of 20-minute presentations, 

which includes ~17 minutes for the presentation and 

3 minutes for questions/discussion . Session chairs are requested 

to strictly adhere to the schedule and to limit speakers to 

the allotted times . In all sessions, only one laptop computer 

running Windows 7 with PowerPoint 2007 software, one projector, 

and one screen will be provided . Speakers will not be 

able to use their own computers for presentations . 

Posters are displayed according to this schedule for the 

date assigned: Wednesday from 5 to 6:30 p .m ., Thursday or 

Friday from 8:30 a .m . to 6:30 p .m . Authors are present at 

their posters from 5 to 6:30 p .m . on Wednesday and from 4:30 

to 6:30 p .m . on Thursday or Friday . Any posters remaining 

after 6:30 p .m . will be discarded . Poster presenters will have 

one 1 .2 m x 1 .8 m vertical display board . Electrical hookups 

will not be available for poster boards . 

Speaker Ready Room. Gobernador room is serving as 

the speaker ready room . Student volunteers are staffing the 

speaker ready room and providing assistance for uploading 

presentations . Each speaker should bring their PowerPoint 

presentation to the speaker ready room on either a CD-ROM 

disk or on a USB drive according to the schedule listed below . 

Speaker Ready Room Schedule 

Wednesday, 28 March 3–6 p .m . 

Thursday, 29 March 8 a .m .–5 p .m . 

Friday, 30 March 8 a .m .–5 p .m . 

Saturday, 31 March 8 a .m .–11 a .m . 

For morning sessions, please have your presentations 

loaded the afternoon before the talk by 5 p .m . For afternoon 

sessions, please have your presentations loaded by noon on 

the day of the talk . All speakers should double-check their 

presentations in the Speaker Ready Room, especially speakers 

who created their talks on a Macintosh and converted it to 

run on Windows . 

Cameras, Sound Equipment, and Smoking Policy 

GSA meeting policy prohibits the use of cameras or sound 

recording equipment at technical sessions . The Conference 

area of Hotel Misión Juriquilla is a smoke-free facility and 

the local committee has adopted a no-smoking policy for all 

meeting rooms, session rooms, eating areas and exhibit areas . 


Keynote Address 

Joaquín Ruiz, University of Arizona and Past President of 

GSA, Isotopic Studies of Hydrocarbon Systems . 

Auditorium of Centro Académico Cultural del Campus 

UNAM Juriquilla, 7–8 p .m . Hors d’oeuvres and complimentary 

drinks will be served at the end, courtesy of UNAM . 

Symposium 

S1. Amalgamation and Breakup of Pangæa in the 

Americas . Co-sponsored by IGCP 597 (Origin and Evolution of 

Pangea) and IGCP 574 (Bending and bent orogens, continental 

ribbons). Brendan Murphy, St . Francis Xavier University, 

bmurphy@stfx .ca; Jarda Dostal, Saint Mary’s University, 

Jarda .Dostal@StMarys .ca; Damian Nance, University of 

Ohio, nance@ohio .edu . 

Theme sessions 

T1. Silicic Volcanism. Cathy Busby, cathy@crustal .ucsb .edu; 

Graham Andrews, gdma1977@gmail .com; both at University 

of California at Santa Barbara . 

T2. Ore deposits and Ore Genesis in the American 

Cordillera. Antoni Camprubi, Instituto de Geología, UNAM, 

camprubitaga@gmail .com . 

T3. Convergent Margin of Western Pangea: Triassic- 

Jurassic Magmatism, Sedimentation and Tectonics from 

Colombia to Oregon. Timothy Lawton, New Mexico State 

University, tlawton@nmsu .edu; Rafael Barboza-Gudiño, 

Universidad Autónoma de San Luis Potosí, México, 

rbarboza@uaslp .mx; Roberto Molina-Garza, Centro de 

Geociencias, UNAM, rmolina@geociencias .unam .mx . 

T5. Mechanisms of Arc Magma Generation along the 

Cordillera. Laura Mori, Instituto de Geología, UNAM, 

lmori@geologia .unam .mx; Peter Schaaf, Instituto de 

Geofísica, UNAM, pschaaf@geofisica .unam .mx; Arturo 

Gómez Tuena, Centro de Geociencias, UNAM, tuena@ 

geociencias .unam .mx . 

T6. Terrane Accretion, Flat Slab Subduction, and 

Convergence Rate Variations: What Caused the Cretaceous- 

Paleogene Shortening across the Mexican Cordillera? 

Michelangelo Martini, Instituto de Geología, UNAM, 

mmartini@geologia .unam .mx; Mariano Cerca, Centro de 

Geociencias, UNAM, mcerca@geociencias .unam .mx; 

Martín Valencia, Instituto de Geología, UNAM, valencia @ 

geologia .unam .mx; Elisa Fitz Díaz, University of Michigan, 

Ann Arbor, fitzdiaz@umich .edu; Gabriel Chavez-Cabello, 

Universidad de Nuevo León, Linares, gabchave@hotmail .com; 

Timothy Lawton, New Mexico State University, tlawton@ 

nmsu .edu . 

T8. Lithosphere Stretching and Magmatism Leading to 

the Gulf of California. Luca Ferrari, Centro de Geociencias, 

UNAM, luca@geociencias .unam .mx; Arturo Martin Barajas, 

CICESE, amartin@cicese .mx; Joann Stock, California 

Institute of Technology, jstock@gps .caltech .edu . 

T9. What Fossil Ages and Distributions Tell Us 

about the History of the Ancient Gulf of California. Judy 

Terry Smith, Smithsonian Institution, National Museum 

of Natural History; Judith Smith, redcloud1@earthlink .net;

Ana Luisa Carreño, Instituto de Geología, UNAM, 

anacar@servidor .unam .mx; Javier Helenes, CICESE, 

jhelenes@cicese .mx . 

T10. The Caribbean Plate and its Geologic Connections 

with North and South America. Luigi Solari, Centro 

de Geociencias, UNAM, solari@servidor .unam .mx; Uwe 

Martens and Jim Pindell, Tectonic Analysis Ltd ., umartens@ 

zoho .com . 

T11. Developments in Geophysical Investigations of 

Volcano Hydrothermal Systems: Exploration and Hazards. 

Jonathan M .G . Glen, jglen@usgs .gov, Shaul Hurwitz, 

shaulh@usgs .gov, both at U .S . Geological Survey; Vyacheslav 

M . Zobin, Universidad de Colima, vzobin@ucol .mx; 

Robert A . Sohn, Woods Hole Oceanographic Institution, 

rsohn@whoi .edu . 

T12. Limnogeology Studies and Paleoenvironmental 

Records from Ancient and Modern Lakes. Beatriz Ortega, 

bortega@geofisica .unam .mx, Margarita Caballero, maga@ 

geofísica .unam .mx, both at Instituto de Geofísíca, UNAM; 

Socorro Lozano, Instituto de Geología, UNAM, mslozano@ 

servidor .unam .mx . 

T13. Heterogeneous Geologic Formations: Modeling 

Spatial Variability. Eric Morales Casique, Instituto de 

Geología, UNAM, ericmc@geologia .unam .mx; Martín Díaz 

Viera, Instituto Mexicano del Petróleo, mdiazv@imp .mx . 

T14. Ground Deformation Related to Anthropogenic 

Activities: Achievements in the Development of 

Geoscientific Information Systems for Improved 

Management of Natural Resources. Dora Carreón-Freyre, 

freyre@geociencias .unam .mx, Mariano Cerca, mcerca@ 

geociencias .unam .mx, both at Centro de Geociencias, 

UNAM; Devin Galloway, US Geological Survey, dlgallow@ 

usgs .gov; Penélope López-Quiroz, Centro de Investigación en 

Geografía y Geomática, penelope@centrogeo .org .mx . 

T16. Undergraduate Research Posters. Co-Sponsored by 

the Council on Undergraduate Research (CUR). Kathleen D . 

Surpless, Trinity University, San Antonio, Texas, ksurples@ 

trinity .edu . 

T17. Environmetal Geochemistry. Mario Villalobos, 

mariov@geologia .unam .mx; Laura Beramendi, laura@ 

geologia .unam .mx; Francisco Romero, fmrch@ 

geologia .unam .mx; Priyadarsi Roy, Instituto de Geología, 

UNAM; Ofelia Morton, Instituto de Geofísica, UNAM, 

omorton@geofisica .unam .mx . 

General Discipline Sessions 

Oral 

Structural Geology and Tectonics 

Poster sessions 

Structural Geology and Tectonics 

Geochemistry and Petrology of Igneous Rocks 

Geophysics and Seismology 

Stratigraphy and Sedimentology 

Paleontology 

Volcanology 

Field Trips 

1. Late Paleozoic—Early Mesozoic of the Acatlán and 

Ayu Complexes, Southern Mexico: Events on the Periphery 

of Pangæa Synchronous with Amalgamation and Breakup. 

Co-sponsored by IGCP 597: Amalgamation and Breakup of 

Pangea. Duncan Keppie (duncan@unam .mx), Instituto de 

Geología, UNAM; Brendan Murphy, Gonzalo Galaz, Moritz 

Kirsch, and Maria Helbig . Sat .–Tue ., 31 March–3 April . 

US$588 . Field trip starts in Querétaro and ends either at a 

Mexico City airport hotel (night of the 3 rd April—plan to fly 

out on the 4 th April) or at Querétaro airport at noon on the 

4 th April . 

This field trip in the Acatlán Complex of southern 

Mexico will examine the geological record of an orogen on 

the western periphery of Pangea: 1) Triassic-Jurassic deposition 

of a clastic sequence intruded by tholeiitic mafic dikes 

that underwent high-grade metamorphism and migmatization 

and exhumation on the western margin of Pangæa; 

2) Late Carboniferous – Early Permian synchronous arc 

magmatism and pull-apart basin sedimentation followed by 

Triassic thrusting on the western periphery of Pangæa; 3) A 

Devonian-Permian sequence synchronous with Carboniferous 

extrusion of high-pressure rocks into the upper plate above a 

subduction zone on the western periphery of Pangæa . 

2. The Late Cretaceous Mexican Fold-and-Thrust 

Belt and its Possible Relation with the Accretion of 

the Guerrero Terrane. Michelangelo Martini (mmartini@ 

geologia .unam .mx), Elisa Fitz, Timothy Lawton . Sun .–Tue ., 

1–3 April . US$344 . 

The fieldtrip will provide a comprehensive overview of 

the Mexican Fold-Thrust Belt (MFTB) in the Sierra Madre 

Oriental of central Mexico, and the possible suture belt of the 

Guerrero Terrane in the Sierra de Guanajuato . During the 

first two days we will visit the Sierra Gorda and Tolimán area 

in Querétaro state with spectacular landscapes, and excellent 

exposure of the MFTB structures . Aspects on the regional 

structure, syn-tectonic sedimentation, deformation style, 

shortening gradients, temperature and timing of deformation 

will be addressed during the first day of the field-trip . During 

the second day we will observe changes in the Cretaceous 

stratigraphy and structure as we move to the western edge of 

the MFTB in the Tolimán area . We will discuss the tectonic 

setting of the Tolimán rocks and of their secondary structures 

. During the third day of the trip we will move to the 

Guanajuato area, where we have the opportunity to observe 

the suture belt between the Guerrero and Sierra Madre terranes 

. This belt is a ~70 km-wide deformation zone, where 

continent-recycled meta-sedimentary rocks of the Sierra 

Madre terrane overthrust arc-recycled meta-sedimentary 

rocks of the Guerrero Terrane . Based on the fieldtrip geologic 

observations we can discuss the possibility that the Guerrero 

Terrane accretion triggered the Late Cretaceous MFTB of the 

Sierra Madre Oriental . 

3. Environmental Geochemistry of the Pozos Mining 

District, Guanajuato, East-Central Mexico. Alejandro 

Carrillo (ambiente@geociencias .unam .mx), Juventino 

Martínez, Gilles Levresse . Wed ., 28 March . US$80 . 


The participants will explore the Mining District of 

Mineral de Pozos and its environmental aspects (mine tailings 

deposited without any environmental concern whatsoever) . 

This historical mining site is one of the oldest in Mexico, 

beginning in the 1600´s . The exploitation was focused on 

silver and gold in the sulfur-rich epithermal veins hosted by 

deformed Jurassic and Cretaceous sedimentary rocks . The site 

was abandoned by early 1940´s, with a “Bonanza” between 

1892 and 1897 . We will visit several ancient exploitation 

“Haciendas”, which look more as ”ghost places”, than exploitation 

plants . Have your camera ready for “shoots into the 

past” from this, once very active and economical center of 

central-east Mexico . The field trip is one full day from 7 am 

to 7 pm .The field trip will include lunch, and will start, and 

end, at the lobby of Hotel Mision Juriquilla, Querétaro . 

4. Sierra de Catorce: Remnants of the Ancient Western 

Equatorial Margin of Pangea in Central Mexico. José 

Rafael Barboza-Gudiño (rbarboza@uaslp .mx) . Universidad 

Autónoma de San Luis Potosí; Roberto S . Molina-Garza . 

Centro de Geociencias, UNAM; Timothy F . Lawton . 

New Mexico, Las Cruces . Sun .–Tue ., 25–27 March . US$520 . 

This field trip begins and ends in San Luis Potosí 

(~200 km north of Querétaro) . Participants will explore 

turbiditic and wildflysh sequences of a triassic submarine fan 

system (Potosí Fan) or Upper Triassic Zacatecas Formation, 

and volcanic successions of the Lower Jurassic volcanic arc 

of western North America in north-central to northeastern 

Mexico (“Nazas Arc”) . Both paleogeographic elements, 

outcropping in the Mesa Central province, are linked to the 

ancient western equatorial margin of Pangea during the early 

Mesozoic time . The trip will examine also the Middle to 

Upper Jurassic continental fining upward succession (La Joya 

Formation) and transgressive Upper Jurassic-Cretaceous 

cover exposed in the Sierra de Catorce uplift, including their 

stratigraphic and tectonic relations . Several stops will show 

sampling sites of new geochronologic data, which have implications 

for tectonic and paleogeographic reconstruction of 

central and northeastern Mexico . Field trip ends on March 27 

in San Luis Potosí at 18 , but participants have the option to 

stay in San Luis Potosí that night at own expense and travel 

on March 28 with the field trip leaders to Juriquilla with a 

stop at the spectacular La Joya Honda maar, arriving in time 

for the opening reception . No additional cost will be charged 

for this optional trip . 

5. Late Pleistocene Rhyolitic Explosive Volcanism at 

Los Azufres Volcanic Field, Central Mexico. José Luis Arce, 

Instituto de Geología, UNAM, (jlarce@geologia .unam .mx); 

José Luis Macías Instituto de Geofísica, UNAM, (macias@ 

geofisica .unam .mx) . Sun .–Tues ., 25–27 March . US$450 . 

The Azufres Volcanic field, which lies in the Trans- 

Mexican Volcanic Belt, holds the second most important 

geothermal field in Mexico . This volcanic field is located 

within the remnants of a caldera structure . At depth, the 

Azufres volcanic field rests upon Miocene rocks (Sierra de 

Mil Cumbres), and Miocene-Pliocene volcanics (Sierra de 

Santa Inés) . The oldest volcanic products of the volcanic 

field are 1 .4 Ma old basalts, followed by a stratigraphic succession 

of andesites, dacites, and rhyolites forming domes, 


lava flows, stratovolcanoes, plateau lavas, and pyroclastic 

deposits with ages as young as 26 ka . In the fieldtrip we will 

examine the young rhyolitic pyroclastic sequences exposed in 

the southwestern sector of the Los Azufres volcanic field and 

discuss the relationship of this rhyolitic volcanism with the 

nearby volcanic structures (domes, stratovolcanoes) . During 

the fieldtrip we will visit outcrops of pyroclastic deposits 

associated to Plinian and sub-Plinian eruptions, and discuss 

the vent source, dynamics and magnitude of these eruptive 

events . In addition, we will observe the morphology of faults 

transecting the geothermal field and some kinematic indicators 

of fault movement. 

This field trip begins on March 25 in the morning at 

the International airport of Mexico City and ends at Hotel 

Misión Juriquilla, Querétaro (meeting headquarter) no later 

than 8 p .m . on March 27 . Breakfast of the first day and lodging 

for the night of March 27 are not included in the fieldtrip 

fee . The nights of March 25 and 26 is spent in Ciudad 

Hidalgo . The driving distance from Mexico City to Ciudad 

Hidalgo, Michoacán is ~375 km (233 miles) (driving time 

~4 .5 hours), and from Ciudad Hidalgo to Juriquilla is 360 km 

(236 miles) . 

6. Ground Deformation Related to Anthropogenic 

Activities in Urbanized Areas of the Mexico Basin. 

Mariano Cerca (mcerca@geociencias .unam .mx) and Dora 

Carreón, Centro de Geociencias, UNAM . Sun .–Mon ., 1–2 

April . US$288 . 

The modern Mexico megacity occupies almost all the 

surface of the Valley of Mexico and is exposed to natural and 

man-induced hazards affecting many aspects of urban development 

. In Mexico City, groundwater has been over-exploited 

for human consumption during the last fifty years, leading to 

a dramatic decline of piezometric levels and to the associated 

land and subsoil deformation . In this two-day fieldtrip we will 

examine regional land subsidence and the vulnerability to 

fracturing of the lacustrine soils of Mexico City . 

7. Geology and Tectonics of the Southeastern Portion of 

the Sierra de Guanajuato. José Jorge Aranda-Gómez (jjag@ 

geociencias .unam .mx); Pablo Dávila-Harris; Luis Vassallo . 

Sun .–Tue ., 25–27 March . Cost: US$380 . 

Sierra de Guanajuato is located in central México in a 

region where several major geologic and tectonic provinces 

join . Rocks exposed in the Mesozoic basal complex are keys 

to understand the Guerrero terrane concept and the evolution 

of the southern part of the North America craton during 

the early Cretaceous . A Tertiary volcano-sedimentary succession, 

unconformably resting on top of the basal complex, 

includes one of the best documented continental red bed 

deposits in central México, which was accumulated immediately 

after the end of the Laramide orogeny and records 

the earliest pulses of extension in the region . Resting atop 

the red beds is a volcanic succession genetically related to 

the Oligocene activity of Sierra Madre Occidental volcanic 

province . World-class silver deposits that have been 

exploited for nearly four centuries are hosted in the Tertiary 

volcano-sedimentary succession, as well as in the rocks of the 

basal complex . The rocks of the basal complex and regional 

tectonic features are the focus of the first day of the field trip

and the last two days are devoted to the study of the nature 

and probable source of the volcanic rocks, which immediately 

preceded the ore deposition along two conspicuous sets of 

normal faults . 

8. Recent Volcanism and Hazards at the Eastern 

Trans-Mexican Volcanic Belt. Gerardo Carrasco-Núñez 

(gerardoc@geociencias .unam .mx), Pablo Dávila-Harris, 

Nancy Riggs, Michael Ort, Brian Zimmer, Chris Willcox and 

Mike Branney . Sat .–Mon ., 31 March–2 Apr ., US$270 . 

In this field trip we will examine examples of recent 

(late Pleistocene and Holocene) volcanism in the eastern 

Trans-Mexican Volcanic Belt, where a diversity of volcanism 

and spectacular exposures can be seen . We will explore the 

complex pyroclastic succession and caldera-rim effusions of 

Los Humeros caldera volcano and geothermal field . We will 

also examine a very interesting vitrophyric rhyolite dome 

(Cerro Pizarro) and the structure and evolution of two contrasting 

maar volcanoes: Atexcac (a classic basaltic maar) 

and Cerro Pinto, a rhyolitic tuff ring-dome complex . 

9. Geology and Geochronology of Tláloc, Telapón, and 

Iztaccíhuatl Volcanoes, Sierra Nevada, Central Mexico. José 

Luis Macías . Instituto de Geofísica, Unidad Morelia, UNAM, 

macias@geofisica .unam .mx, José Luis Arce, Instituto de 

Geología, UNAM; F . García, Instituto Politécnico Nacional, 

Paul W . Layer, University of Alaska at Fairbanks, G . Reyes- 

Agustín, Instituto Politécnico Nacional, F . López-Pizaña, 

Instituto Politécnico Nacional, H . Rueda, Posgrado de 

Ciencias de la Tierra, UNAM . Sun .–Wed ., 1–4 April . 

US$ 477 . 

The field trip will focus on late Quaternary geology, morphology 

and geochronology of volcanoes of La Sierra Nevada 

volcanic range . This range includes, from south to north, the 

active Popocatépetl, Iztaccíhuatl, Telapón, and Tláloc volcanoes 

. The trip will highlight recent work, including mapping, 

stratigraphy, and geochronological data . The trip will include 

brief roadside stops, several short hikes to reach outcrops, and 

strenuous long hikes at altitudes over 4,000 m . Topics covered 

at fieldtrip stops are: 1) Evidence of late Pleistocene explosive 

activity at Tláloc volcano accompanied by effusive activity, 

2) Effusive build-up of Telapón volcano and surrounding 

domes with episodes of dome destruction, 3) Major collapse 

of Los Pies cone at the southern edge of the Iztaccíhuatl volcanic 

complex and, 5) Popocatépetl´s latest explosive episode 

which occurred in January 2001 and generated a 6-km long 

scoria flow deposit . 

This field trip begins at Hotel Misión, Juriquilla, 

Querétaro and ends at the Mexico City International airport 

. Participants on this field trip should eat breakfast (not 

included in the fieldtrip fee) before departing . The fieldtrip 

fee includes lunches for the four days, three breakfasts, and 

dinner for the third night . During the first day, the driving 

distance from Juriquilla, Querétaro to Tláloc volcano is about 

280 km (~4 hours), and during the second day, the driving 

distance from Popocatépetl volcano to the Mexico City 

International airport is 75 km (~2 hours considering traffic) . 

We plan to return to the Mexico City International airport 

around 6 pm . 


Schedule of Events 

EvEnt timE Location 

Field trips 

Sunday, 25 march 

Sierra de Catorce: Remnants of the ancient western equatorial margin 

of Pangea in central Mexico 

Late Pleistocene Rhyolitic Explosive Volcanism at Los Azufres Volcanic 

Field, Central Mexico 

Geology and Tectonics of the Southeastern Portion of the Sierra de 

Guanajuato 

WEdnESday, 28 march 

Exhibit Set-up 10–17 Juárez 1-2 

Student volunteer training 12–14 Mariposa 1 

Speaker ready room 14–18 Gobernador 

8 

9 

8 

Lobby of City Express Hotel in 

San Luis Potosí 

Fiesta Inn Hotel at Mexico City 

International Airport 

Hotel Misión Juriquilla 

Lobby 

registration open 14–19 Corridor, in front of Juárez 1 

Exhibit opening 17–19 Juárez 1-2 

opening reception 18–20 Parián (Plaza El Pueblito) 

Poster Session 

T16. Undergraduate Research * 

* Posters will remain displayed Wednesday and Thursday 

Field trip 

Environmental Geochemistry of the Pozos Mining District, Guanajuato, 

East-Central Mexico 

thurSday 29 march 

17–18:30 Juárez 1-2 

7 Hotel Misión Juriquilla Lobby 



Exhibits open 8:30–18 Juárez 1-2 

roy J. Shlemon mentor Program in applied Geoscience 13–14:30 Siglo XVIII annexe 

town hall meeting 17:30–18:30 Siglo XVIII 

oral Sessions 

morninG 

S1. Amalgamation and Breakup of Pangea in the Americas 8:30–12:50 Juárez 3 

T8. Lithosphere Stretching and Magmatism Leading to the 

Gulf of California 

8:30–12:55 Siglo XVIII 

T17. Environmetal Geochemistry 8:30–12:55 Goyesco 1 




aFtErnoon 

S1. Amalgamation and Breakup of Pangea in the Americas II 14:30–16:30 Juárez 3 

T9. What Fossil Ages and Distributions Tell Us about the History of the 

Ancient Gulf of California? 


T17. Environmental Geochemistry II, Keynote 14:30–15:00 Goyesco 1 

T13. Heterogeneous Geologic Formations: Modeling Spatial Variability 15:00–16:30 Goyesco 1 

Poster Sessions ** 

S1. Amalgamation and Breakup of Pangea in the Americas 8:30–18:30 Juárez 1-2 

T8. Lithosphere Stretching and Magmatism Leading to the Gulf 

of California 

T9. What Fossil Ages and Distributions Tell Us about the History of the 

Ancient Gulf of California? 

T11. Developments in Geophysical Investigations of Volcano 

Hydrothermal Systems: Exploration and Hazards 

8:30–18:30 Juárez 1-2 

8:30–18:30 Juárez 1-2 

8:30–18:30 Juárez 1-2 

T16. Undergraduate Research 8:30–18:30 Juárez 1-2 

T17. Environmetal Geochemistry 8:30–18:30 Juárez 1-2 

Geophysics/Seismology 8:30–18:30 Juárez 1-2 

Stratigraphy and Sedimentology 8:30–18:30 Juárez 1-2 

Palaentology 8:30–18:30 Juárez 1-2 

Volcanology 8:30–18:30 Juárez 1-2 

** Authors are present at their posters from 16:30 to 18:30. 

Friday, 30 march 



Exhibits open 8:30–18 Juárez 1-2 

John mann mentors in applied hydrogeology Program. 13–14:30 Siglo XVIII annexe 

oral Sessions 

morninG 

T1. Silicic Volcanism I 8:30–12:50 Juárez 3 

T3. Convergent Margin of Western Pangea: Triassic-Jurassic Magmatism, 

Sedimentation, and Tectonics from Colombia to Oregon 

T10. The Caribbean Plate and its Geologic Connections with North and 

South America 

T12. Limnogeology Studies and Paleoenvironmental Records from 

Ancient and Modern Lakes 

8:30–12:50 Goyesco 1 


8:30–12:50 Mariposa 2


aFtErnoon 

T1. Silicic Volcanism II 14:30–16:30 Juárez 3 

T14. Ground Deformation Related to Anthropogenic Activities: 

Achievements in the Development of Geoscience Information System for 

Improved Management of Natural Resources 

14:30–16:50 Goyesco 1 

Structural Geology/Tectonics 14:30–16:50 Siglo XVIII 

Poster Sessions ** 

T1. Silicic Volcanism 8:30–18:30 Juárez 1-2 

T2. Ore Deposits and Ore Genesis in the American Cordillera 8:30–18:30 Juárez 1-2 

T3. Convergent Margin of Western Pangea: Triassic-Jurassic Magmatism, 

Sedimentation, and Tectonics from Colombia to Oregon 

8:30–18:30 Juárez 1-2 

T5. Mechanisms of Arc Magma Generation along the Cordillera 8:30–18:30 Juárez 1-2 

T6. Terrane Accretion, Flat Slab Subduction, and Convergence Rate 

Variations: What Caused the Cretaceous-Paleogene Shortening across 

the Mexican Cordillera? 

T10. The Caribbean Plate and its Geologic Connections with North and 

South America 

T12. Limnogeology Studies and Paleoenvironmental Records from 

Ancient and Modern Lakes 

8:30–18:30 Juárez 1-2 

8:30–18:30 Juárez 1-2 

8:30–18:30 Juárez 1-2 

Structural Geology/Tectonics 8:30–18:30 Juárez 1-2 

Geochemistry and Petrology of igneous rocks 8:30–18:30 Juárez 1-2 

** Authors are present at their posters from 16:30 to 18:30. 

Keynote address 

Joaquín ruiz, Department of Gesciences, University of Arizona, 

Past President of GSA, Isotopic Studies of Hydrocarbon Systems. 

19–20 

Saturday, 31 march 

Centro Académico Cultural (CAC), 

UNAM Campus 

registration open 8 –noon Corridor, in front of Juárez 1 


Exhibits open 8 –13 Juárez 1-2 

Exhibits take down 13–17 Juárez 1-2 

oral Sessions 

morninG 

T2. Ore Deposits and Ore Genesis in the American Cordillera 8–12:50 Goyesco 1 

T5. Mechanisms of Arc Magma Generation along the Cordillera 8–12:50 Juárez 3 


Variations: What Caused the Cretaceous-Paleogene Shortening across 

the Mexican Cordillera? 

8–12:50 Siglo XVIII 



Field trips 

Late Paleozoic–Early Mesozoic of the Acatlán and Ayu Complexes, 

Southern Mexico: Events on the Periphery of Pangea Synchronous with 

Amalgamation and Breakup 

Recent Volcanism and Hazards at the Eastern Trans-Mexican Volcanic 

Belt 

Field trips 


Sunday, 1 aPriL 

Ground Deformation Related to Anthropogenic Activities in Urbanized 

areas of the Mexico Basin 

The Late Cretaceous Mexican Fold-and-Thrust Belt and its Possible 

Relation with the Accretion of the Guerrero Terrane 

Geology and Geochronology of Tlaloc, Telapon and Iztaccíhuatl 

Volcanoes, Sierra Nevada, Central Mexico 

Geosphere 

is the place 

to publish! 

13:00 Hotel Misión Juriquilla Lobby 





Geosphere offers: • rigorous peer review 

• a fl exible format 

• free color 

• rapid publication after acceptance 

• a broad, international audience 

Submit your manuscript online at 

www.editorialmanager.com/geosphere 

For submission details, visit 

www.geosociety.org/pubs/geosphere/gsGuide.htm 

Submissions welcomed from all geoscience disciplines

SESSion no. 1 

Technical Sessions 

Meeting policy prohibits the use of cameras 

or sound-recording equipment at technical 

sessions and poster sessions . 

EvEninG PoStEr 

tEchnicaL SESSionS 

T16. Undergraduate Research (Posters) (Council on Undergraduate 

Research (CUR)) 

17:00, Hotel Misión Juriquilla, Juarez 1 and 2 

Authors will be present from 17:00 to 18:30 Weds. and 16:30-18:30 Thurs. 

Booth # 

1-1 1 Pérez- Crespo, Víctor Adrián*; Arroyo-Cabrales, Joaquín; 

Alva-Valdivia, Luis M.; Morales-Puente, Pedro; Cienfuegos-Alvarado, 

Edith; Otero, Francisco J.: inFErEncES For LatE PLEiStocEnE 

horSES GEnuS EQuuS SP. at LatE PLEiStocEnE From 

SEvEn mEXican LocaLitiES 

1-2 2 Cooley, Sarah W.*; Domonoske, Alison F.; Moore, Erin N.; Shukla, 

Sagar S.: dEGradation oF morainE SLoPES With aGE in 

QuatErnary morainES oF EaStErn caLiFornia 

1-3 3 Morgan, Camille*; Jin, Annie; Medlin, Rachel; Kress, Tyler: 

BouLdEr hardnESS aS an indication oF rELativE aGE 

oF morainES in EaStErn caLiFornia 

1-4 4 Sickmann, Zachary*; Surpless, Kathleen DeGraaff; Konetchy, Brant: 

ProvEnancE anaLySiS oF thE WinthroP Formation oF 

thE mEthoW BaSin, northErn WaShinGton: EvidEncE 

For minor PoSt-dEPoSitionaL diSPLacEmEnt 

1-5 5 Konetchy, Brant*; Surpless, Kathleen DeGraaff; Sickmann, Zachary: 

EvidEncE For minor PoSt-dEPoSitionaL diSPLacEmEnt 

oF thE mEthoW BaSin, northErn WaShinGton: dEtaiLEd 

ProvEnancE anaLySiS oF thE hartS PaSS Formation 

1-6 6 Dustin, Kelly Nicole*; Miller, Robert B.; Shea, Erin: intruSivE 

rELationShiPS and dEFormation oF maFic and 

tonaLitic rocKS in Part oF thE SEvEn FinGErEd JacK 

PLuton, north caScadES, WaShinGton 

1-7 7 Grasso, Kyla A.*; Meigs, Andrew; Cladouhos, Trenton T.: oriGin 

oF FauLtS, FiSSurES and voLcanic vEnt aLiGnmEntS at 

a StructuraL triPLE Junction, nEWBErry voLcano, 

cEntraL orEGon 

A no-smoking policy has been established by 

the Programme Committee and will be followed 

in all meeting rooms for technical sessions . 

NOTICE 

In the interest of public information, The Geological Society of America provides a forum for the presentation 

of diverse opinions and positions . The opinions (views) expressed by speakers and exhibitors at these sessions 

are their own and do not necessarily represent the views or policies of The Geological Society of America . 

NOTE INDEx SySTEM 

Numbers (3-4, 15-4) indicate session and order of presentation within that session. 

*denotes speaker 

WEdnESday, 28 march 2012 

1-8 8 Ferreira, Gabriela R.*; Dinklage, William S.: rhyoLitE voLcaniSm 

in thE tranS-mEXican voLcanic BELt With imPLicationS 

For GroundWatEr FLoW in thE viLLaGE oF GarBanZo 

1-9 9 Sabbeth, Leah*; Stock, Joann M.: uPdatEd iSoPach maP oF 

thE tuFF oF San FELiPE in BaJa caLiFornia, mEXico 

1-10 10 Olivares-Escobar, Asael*; García Dobarganes-Bueno, Juan Esteban; 

Levresse, Gilles; Aranda-Rodríguez, Armando: FLuid incLuSionS 

anaLySiS at charcaS minE, charcaS mininG diStrict, 

mEXico 

thurSday, 29 march 2012 

morninG oraL 


SESSion no. 2 

S1. Amalgamation and Breakup of Pangea in the Americas I (IGCP 

597 (Origin and Evolution of Pangea) and IGCP 574 (Bending and 

Bent Orogens, Continental Ribbons)) 

08:30, Hotel Misión Juriquilla, Juarez 3 

J. Brendan Murphy, Jarda Dostal, and R. Damian Nance, Presiding 

2-1 08:30 Murphy, J. Brendan*; Dostal, Jaroslav; Nance, R. Damian: 

J. duncan KEPPiE: an aPPrEciation and a 

cELEBration 

2-2 08:50 Ramos, Víctor A.*: PaLEoZoic tErranES in thE 

BaSEmEnt oF thE andES 

2-3 09:30 Nance, R. Damian*; Murphy, J. Brendan; Pisarevsky, Sergei A.: 

PotEntiaL GEodynamic rELationShiPS BEtWEEn 

thE dEvELoPmEnt oF PEriPhEraL oroGEnS aLonG 

thE northErn marGin oF GondWana and thE 

amaLGamation oF WESt GondWana 


SESSION NO. 2 

2-4 09:50 Braid, James A.; Quesada, Cecilio*; Murphy, J. Brendan; 

Mortensen, James K.: PrESEncE oF EXotic LauruSSian 

cruStaL BLocKS Within, and South oF, thE rhEic 

SuturE ZonE in SW iBEria 

2-5 10:10 Gladney, Evan R.*: thE GiL marQuEZ PLuton, 

SouthErn iBEria: maGmatiSm durinG continEntaL 

coLLiSion and thE amaLGamation oF PanGEa 

10:30 Break 

2-6 10:50 Dahn, Dustin R.L.*; Braid, James A.; Murphy, J. Brendan: 

tEctonic SiGniFicancE oF a maFic mÉLanGE in thE 

PanGEan SuturE ZonE, SW iBEria 

2-7 11:10 Solari, Luigi*; Ortega-Gutiérrez, Fernando; Elias Herrera, 

Mariano; Ortega-Obregón, Carlos; Macías Romo, Consuelo; 

Reyes Salas, Margarita: dEtritaL ProvEnancE oF thE 

GrEnviLLian oaXacan comPLEX, SouthErn mEXico: 

a Zircon PErSPEctivE 

2-8 11:30 Galaz-Escanilla, Gonzalo*; Keppie, J. Duncan; Murphy, 

J. Brendan; Lee, James K.W.; Ortega-Rivera, Amabel: 

hiGh PrESSurE KLiPPE on thE activE WEStErn 

marGEn oF PanGEa durinG initiaL StaGES oF itS 

amaLGamation 

2-9 11:50 Ramos-Arias, Mario*; Ortega-Obregón, Carlos; Keppie, 

J. Duncan: GEochEmicaL, GEochronoLoGicaL and 

StructuraL connEctionS BEtWEEn thE WEStErn 

and cEntraL hiGh PrESSurE BELtS in acatLÁn 

comPLEX, SouthErn mÉXico: onE cycLE oF 

mEtamorPhic PEtroGEnESiS and EmPLacEmEnt 

durinG LatE dEvonian-miSSiSSiPPian SuBduction- 

EXtruSion on thE WEStErn marGin oF PanGEa 

2-10 12:10 Morales-Gámez, Miguel*; Keppie, J. Duncan; Dostal, 

Jaroslav; Lee, James K.W.; Ortega-Rivera, Amabel: PErmocarBoniFErouS 

dEFormationaL EvEntS in 

thE XayacatLÁn tyPE arEa, SouthErn mEXico 

aSSociatEd With miSSiSSiPPian EXtruSion 

and middLE PErmian tranStEnSionaL arc 

dEvELoPmEnt on thE WEStErn marGin oF PanGEa 

2-11 12:30 Kirsch, Moritz*; Keppie, J. Duncan; Murphy, J. Brendan; 

Lee, James K.W.: EmPLacEmEnt oF thE LatE 

carBoniFErouS–PErmian arc-rELatEd totoLtEPEc 

PLuton, acatLÁn comPLEX, SouthErn mEXico: 

SyntEctonic intruSion aLonG a mid-cruStaL 

tranSPrESSionaL ShEar ZonE 

SESSion no. 3 


of California 

08:30, Hotel Misión Juriquilla, Siglo XVIII 

Luca Ferrari, Arturo Martin-Barajas, and Joann Stock, Presiding 

08:30 introductory remarks 

3-1 08:35 Fletcher, John*: KEynotE: thE oPEninG oF thE GuLF 

oF caLiFornia: tEmPoraL vS SPatiaL variationS in 

riFt KinEmaticS 

3-2 09:05 Martín, Arturo*; González-Escobar, Mario; Fletcher M, John; 

Pacheco, Martín: continEntaL ruPturE dELayEd By 

SEdimEntation and LoW-anGLE normaL FauLtS in 

thE northErn GuLF oF caLiFornia: anaLySiS oF 

SEiSmic rEFLEction ProFiLES in thE tiBuron and 

dELFin BaSinS 

3-3 09:25 Darin, Michael H.*; Dorsey, Rebecca J.; Bennett, Scott E.K.; 

Oskin, Michael E.; Iriondo, Alex: LatE miocEnE EXtEnSion 

in thE SiErra Bacha, coaStaL Sonora, mEXico: 

imPLicationS For thE KinEmatic EvoLution oF thE 

Proto-GuLF oF caLiFornia 

3-4 09:45 Bennett, Scott E.K.*; Oskin, Michael E.; Iriondo, Alex: 

ProGrESSivE LocaLiZation oF dEXtraL ShEar in 

thE LatE Proto-GuLF oF caLiFornia 


3-5 10:05 Olguin Villa, Angel Enrique*; Stock, Joann M.; Vidal Solano, 

Jesus R.: maGnEtic StratiGraPhy oF PEraLKaLinE 

voLcaniSm in SiErra LiBrE, Sonora, mEXico 

10:25 Break 

3-6 10:45 Lonsdale, Peter*: KEynotE: thE hiStory and cauSES 

oF thE riFtinG, ShEarinG and SPrEadinG that 

oPEnEd thE mouth oF thE GuLF oF caLiFornia 

3-7 11:15 Ferrari, Luca*; Orozco-Esquivel, Teresa; López Martínez, 

Margarita; Duque, Jose; Bryan, Scott; Cerca, Mariano: 25 

miLLion yEarS to BrEaK a continEnt: EarLy to 

middLE miocEnE riFtinG and Syn-EXtEnSionaL 

maGmatiSm in thE SouthErn GuLF oF caLiFornia 

3-8 11:35 Bennett, Scott E.K.*; Oskin, Michael E.; Dorsey, Rebecca J.; 

Darin, Michael H.: rEconStructinG thE northErn 

GuLF oF caLiFornia-SaLton trouGh oBLiQuE riFt 

3-9 11:55 Mark, Chris*; Gupta, Sanjeev; Carter, Andrew; Mark, Darren F.; 

Gautheron, Cécile; Martin-Barajas, Arturo: tEmPoraL 

conStraintS on thE LandScaPE rESPonSE to 

riFtinG in thE LorEto rEGion oF BaJa caLiFornia 

Sur, mEXico 

3-10 12:15 Portillo-Pineda, Rodrigo*; Cerca, Mariano; Ferrari, Luca; Corti, 

Giacomo: anaLoGuE modELS oF thE SouthErn Part 

oF thE GuLF oF caLiFornia riFt 

3-11 12:35 Bryan, Scott*; Ferrari, Luca; Orozco-Esquivel, Teresa; 

López-Martínez, Margarita: PuLLinG aPart thE mid to 

LatE cEnoZoic maGmatic rEcord oF thE GuLF oF 

caLiFornia: no room For thE comondÚ arc 

SESSion no. 4 

T17. Environmental Geochemistry I 

08:30, Hotel Misión Juriquilla, Goyesco 1 

Mario Villalobos, Laura E. Beramendi-Orosco, Francisco Romero, Priyadarsi Roy, 

and Ofelia Morton, Presiding 

4-1 08:30 Kirby, Matthew E.*; Feakins, Sarah J.; Fantozzi, Joanna; 

Lund, Steve P.; Hiner, Christine: KEynotE: maKinG 

SEnSE oF thE LaSt dEGLaciation BEtWEEn 

cLimatoLoGicaLLy divErSE rEGionS: a viEW From 

LaKE ELSinorE in thE coaStaL SouthWESt unitEd 

StatES to thE intErior SouthWESt unitEd StatES 

and northErn mEXico 

4-2 09:00 Roy, Priyadarsi*; Quiroz, Jesús David; Chavez-Lara, Claudia; 

Lozano, Socorro; Perez, Ligia; Lozano, Rufino; Romero, 

Francisco: LatE PLEiStocEnE-hoLocEnE PaLEo- 

PrEciPitation rEcordS From thE dryLandS oF 

northErn mEXico 

4-3 09:20 Solleiro-Rebolledo, Elizabeth*; Sedov, Sergey; Cabadas, 

Héctor; Landa, Federico: GEochEmEStry oF caLichES 

oF northEaSt yucatan aS EvidEncES oF SoiL 

dEvELoPmEnt in KarStic GEoSyStEmS 

4-4 09:40 Gutierrez, Melida*: SPatiaL variaBiLity oF FE, mn, and 

Ba oF SEdimEntS Within thE chihuahuan dESErt, 

mEXico 

4-5 10:00 Del Rio Salas, R.*; Meza-Figueroa, D.; Ruiz, J.; 

De la O-Villanueva, M.; Moreno-Rodríguez, V.; Valencia 

Moreno, M.; Gómez-Alvarez, A.; Grijalva, T.; Campillo, A.; 

Paz-Moreno, F.: tracinG oF PoLLution SourcES in 

urBan duSt and SoiLS From hErmoSiLLo city 

(northWEStErn mEXico) uSinG PB iSotoPES 

4-6 10:20 Baumann, Francine*: EnvironmEntaL EXPoSurE 

to carcinoGEnic FiBErS duE to SErPEntinitE 

PavEd roadS in nEW caLEdonia: LESSonS in 

EnvironmEntaL EPidEmioLoGy and in PrEvEntion 

10:40 Break 

4-7 10:50 Martínez-Villegas, Nadia*; Castañón-Sandoval, Alan; 

Ramos-Leal, José Alfredo; Briones-Gallardo, Roberto; 

Avalos-Borja, Miguel; Razo-Flores, Elías; Villalobos, Mario: 

arSEnic moBiLity controL By SoLid caLcium

arSEnatES: an aLtErnativE mEchaniSm oF 

rEtEntion oF arSEnic in thE EnvironmEnt 

4-8 11:10 Hansen, Anne M.*; Mahé, Florence; Corzo-Juárez, Carlos: 

aSSESSinG mEtaLS rELEaSE From SEdimEntS in 

LaKES and rESErvoirS 

4-9 11:30 Villalobos, Mario*; Salazar-Camacho, Carlos; Antelo, Juan: 

thE imPortancE oF thE minEraL/WatEr intErFacE 

For controLLinG thE moBiLity oF ionS: macroand 

microScoPic invEStiGationS uniFyinG thE 

adSorPtion BEhavior oF thE FE oXyhydroXidES 

GoEthitE and FErrihydritE 

4-10 11:50 Aguilar-Carrillo, Javier*; Clarke, Cathy E.; Roychoudhury, 

Alakendra N.: dryinG inducEd acidity at thE minEraL- 

WatEr intErFacE: atr-Ftir SPEctroScoPy 

4-11 12:10 Aguirre-Gómez, Arturo; Guzmán-Rangel, Georgina*: EFFEct 

oF chEmicaL-aGronomic trEatmEntS on thE 

EXtractaBLE and FrEE cd, cu, PB and Zn LEvELS 

SuitaBLE For rEmEdiatinG minE taiLinGS and 

PoLLutEd SoiLS 

4-12 12:30 Beramendi-Orosco, Laura E.*; Gonzalez-Hernandez, Galia: 

radiocarBon concEntration in Short-LivEd 

hErBacEouS PLantS aS indicator oF FoSSiL co2 EmiSSionS in urBan rEGionS 

12:50 concluding remarks 

PoStEr 


SESSion no. 5 

Geophysics/Seismology (Posters) 


Authors will be present from 16:30 to 18:30 

Booth # 

5-1 11 Wamalwa, Antony Munika*; Mickus, Kevin; Serpa, Laura; Doser, 

Diane: anaLySiS oF Gravity and maGnEtotELLuric 

data From thE coSo GEothErmaL FiELd, SouthEaSt 

caLiFornia 

5-2 12 Hussein, Musa; Mickus, Kevin*; Serpa, Laura: curiE dEPth 

anaLySiS oF dEath vaLLEy and SurroundinG rEGion, 

caLiFornia 

5-3 13 León Loya, Rodrigo Alejandro*; Gómez González, Juan Martín: 

intraPLatE micro-SEiSmicity in thE cEntraL Part oF 

thE SiErra madrE oriEntaL, mEXico 

SESSion no. 6 

Paleontology (Posters) 



Booth # 

6-1 14 Beraldi-Campesi, Hugo*: 3d rEconStruction oF mELoSira 

huEPacEnSiS, a FrEShWatEr crEtacEouS diatom 

6-2 15 Riquelme, Francisco*; Stojanoff, Vivian; Tappero, Ryan; Bennett, 

Steve; Acerbo, Alvin; Northrup, Paul; Siddons, Peter; Moreno, Abel; 

Ruvalcaba-Sil, José Luis; Alvarado-Ortega, Jesús: Synchrotron- 

BaSEd tEchniQuES: thE moLEcuLar taPhonomy oF 

inSEctS traPPEd in amBEr From thE EarLy miocEnE 

chiaPaS LaGErStÄttE 

6-3 16 Jimenez-Hidalgo, Eduardo*; Campos-Camacho, Mario Alberto; 

Guerrero-Arenas, Rosalía; Cabrera-Perez, Lucia: thE LatE 

PLEiStocEnE EQuidS From northWEStErn oaXaca, 

SouthErn mEXico 

SESSION NO. 7 

6-4 17 Guerrero-Arenas, Rosalía*; Jimenez-Hidalgo, Eduardo; 

García-Barrera, Pedro: a PrELiminary intErPrEtation oF 

thE taPhonomy and PaLEoEnvironmEntaL conditionS 

oF a LatE PLEiStocEnE non-marinE invErtEBratE and 

microvErtEBratE aSSEmBLaGE in oaXaca, SouthErn 

mEXico 

6-5 18 Omaña, Lourdes*; Buitron, Blanca E.; Pantoja-Alor, Jerjes: a 

ForaminiFEra and GaStroPod aSSEmBLaGE From 

thE maL PaSo Formation in thE chumBÍtaro rEGion, 

GuErrEro, South mEXico: BioStratiGraPhicaL, 

PaLEoEcoLoGicaL and PaLEoBioGEoGraPhicaL 

SiGniFicancE 

6-6 19 Ramírez-Garza, Blanca Margarita*; González-Arreola, Celestina: 

BarrEmian ammonitE BioStratiGraPhy From thE San 

LucaS Formation in thE huEtamo rEGion, michoacÁn, 

mEXico 

6-7 20 Buitron, Blanca E.*: GaStroPodS, BioStratiGraPhy, and 

PaLEoGEoGraPhy, LoWEr crEtacEouS, in a rudiSt- 

BEarinG Formation, JaLiSco, mEXico 

6-8 21 Oviedo, Angelica*; Dávila, Elizabeth; Chacón, Enrique; Franco-Rubio, 

Miguel; Estrada, Jesus; Ortiz, Guillermo; Velasco, Gladys; Torres, 

Aidee; Zavala, Loreto: PaLEontoLoGy coLLEction at thE 

rayEnari muSEum around LaGuna dE BuStiLLoS, 

chihuahua, mEXico 

6-9 22 Guerrero-Arenas, Rosalía*; Gonzalez-Rodriguez, Katia Adriana: 

StratEGiES For tEachinG GEoLoGicaL and 

PaLEontoLoGicaL ProcESSES and EvEntS occurrEd 

in Earth hiStory 

SESSion no. 7 

Stratigraphy/Sedimentology (Posters) 



Booth # 

7-1 23 Morgan, George J.*; Morgan, J.R.: GarnEt WaSh Formation 

and thE imPEriaL GrouP: a nEW LooK at oLd ProBLEmS, 

coyotE mountainS, WEStErn SaLton trouGh, imPEriaL 

county, SouthErn caLiFornia, uSa 

7-2 24 Amaya-Martínez, Ricardo*; Premo, Wayne R.; Poole, Forrest G.: 

dEPoSitionaL SEttinG and SourcE oF dEtritaL ZirconS 

in thE PErmian mina mÉXico ForEdEEP in Sonora, 

mEXico 

7-3 25 Lindner, Philip*; Riggs, Nancy; González-León, Carlos M.: 

ProvEnancE Study oF LatESt PaLEoZoic to mESoZoic 

EL antimonio GrouP, Sonora, mEXico, and imPLicationS 

For tEctonic EvoLution oF SouthWESt LaurEntia 

7-4 26 Franco-Rubio, Miguel*; Oviedo, Angelica: StratiGraPhy oF thE 

cuchiLLo Formation in chihuahua, mÉXico 

7-5 27 Escalona-Alcázar, Felipe de Jesús*; García-Sandoval, 

Perla; Escobedo-Arellano, Bianney; Carrillo-Castillo, Carlos; 

Castillo-Félix, Brenda; Solari, Luigi; Núñez-Peña, Ernesto Patricio; 

García y Barragán, Juan Carlos; Bluhm-Gutiérrez, Jorge; 

Esparza-Martínez, Alicia: LithoLoGic and StructuraL 

charactEriSticS oF thE PaLEocEnE-EocEnE ZacatEcaS 

conGLomEratE, cEntraL mEXico 

7-7 29 Escobar, Elia*; Urrutia-Fucugauchi, Jaime: thE carBonatE 

PaLEoGEnE SEQuEncE oF thE chicXuLuB imPact BaSin, 

yucatan PLatForm – yaXcoPoiL-1 BorEhoLE 

7-8 30 Stockton, David R.*: GLaciation in thE WhitE mountainS, 

cottonWood PLatEau icE FiELd, inyo county, EaStErn 

caLiFornia 

7-9 31 Maloof, David*; Lopez, Roberto; Martinez, Fernando; Torres, Ricardo; 

Franco, Miguel: LithoLoGicaL and StratiGraPhicaL data 

WarEhouSE inFormation SyStEm 


SESSION NO. 8 

SESSion no. 8 

Volcanology (Posters) 



Booth # 

8-1 32 Ort, Michael H.*; Unema, Joel A.; Larsen, Jessica F.; Schaefer, 

Janet R.: comPLEX WatEr-maGma intEraction durinG thE 

2008 EruPtion at oKmoK voLcano, aLaSKa 

8-2 33 Rodriguez-Sedano, L.A.*; Sarocchi, Damiano; Bartali, Roberto; 

Montenegro, Anibal: Lahar dEPoSitS on La LumBrE ravinE 

rELatEd to thE GrEat 1913 PLinian EruPtion oF voLcan 

dE coLima mEXico 

8-3 34 Caballero, Lizeth*; Sarocchi, Damiano; Borselli, Lorenzo: 

QuantitativE cLaSt ShaPE anaLySiS aPPLiEd to 

intErnaL dynamicS oF dEBriS FLoWS 

8-4 35 Zimmer, Brian*; Liutkus, Cynthia; Carmichael, Sarah; Richmond, 

Brian; Hewitt, Seth; Hatala, Kevin; Harcourt-Smith, William E.H.; 

Gordon, Adam; Mana, Sara; Brett, Jim: a SnaPShot in timE: 

dEtErmininG thE aGE, EnvironmEnt, and SociaL 

StructurES oF EarLy homo SaPiEnS uSinG tracE 

FoSSiLS in voLcanicLaStic rocKS at thE EnGarE SEro 

FootPrint SitE, LaKE natron, tanZania 

8-5 36 Aguirre-Díaz, Gerardo J.*; Tristán-González, Margarito; 

Labarthe-Hernández, Guillermo; Aguillón-Robles, Alfredo; 

Nieto-Obregón, Jorge; López-Martínez, Margarita; Bellon, Hervé: 

thE PEÑa dE BErnaL naturaL monumEnt oF 

QuErEtaro, mEXico 

SESSion no. 9 

S1. Amalgamation and Breakup of Pangea in the Americas (Posters) 

(IGCP 597 (Origin and Evolution of Pangea) and IGCP 574 (Bending 

and Bent Orogens, Continental Ribbons)) 



Booth # 

9-1 37 Estrada-Carmona, Juliana*; Weber, Bodo; Martens, Uwe K.; 

López-Martínez, Margarita: PEtroGEnESiS oF ordovician 

maGmatic rocKS in thE SouthErn chiaPaS maSSiF and 

rELationS With thE EarLy PaLEoZoic maGmatic BELtS 

oF northWEStErn GondWana 

SESSion no. 10 


of California (Posters) 



Booth # 

10-1 38 Skinner, Lisa A.*; Umhoefer, Paul J.; Kluesner, Jared W.; Nava, 

Richard: GiS PLatE tEctonic rEconStruction oF thE 

SouthErn GuLF oF caLiFornia oBLiQuE riFt 

10-2 39 Skinner, Steven*; Stock, Joann; Martin-Barajas, Arturo: 

charactEriZation oF thE tuFF oF San FELiPE on iSLa 

anGEL dE La Guarda, BaJa caLiFornia, mEXico 

10-3 40 Figueroa-Albornoz, Leonardo*; Mortera-Gutierrez, Carlos 

A.; Escobar-Briones, Elva; Godfroy, Anne; Bandy, William L.; 

Ponce-Núñez, Francisco; Taran, Yuri A.; Bernard-Romero, Ruben A.: 

coLd SEEPS in thE Sonora marGin BaSin at GuaymaS 

BaSin, GuLF oF caLiFornia, mEXico 

10-4 41 Duque, Jose*; Ferrari, Luca; Orozco-Esquivel, Teresa; 

López Martínez, Margarita; Lonsdale, Peter: raPid EXhumation 

oF EarLy to middLE miocEnE intruSivE rocKS in thE 

SouthErn GuLF oF caLiFornia: thE EarLy StaGES oF 

continEntaL BrEaKuP 



T9. What Fossil Ages and Distributions Tell Us about the History of 

the Ancient Gulf of California (Posters) 



Booth # 

11-1 42 Leyva Valencia, Ignacio*; Cruz Hernández, Pedro; Lluch Cota, 

Daniel Bernardo; Rojas Posadas, Delia Irene; Rugh, N. Scott; 

Correa Ramírez, Miguel Mauricio: PhyLoGEnEtic 

rELationShiPS oF GEoducK cLamS PANOPEA GENEROSA 

and P. GLOBOSA and thEir anciEnt and EXtant 

diStriBution in BaJa caLiFornia and thE GuLF oF 

caLiFornia 

11-2 43 Ramírez-Arriaga, Elia*; Prámparo, Mercedes B.; Guerstein, 

G. Raquel; Martínez-Hernández, Enrique; Galván-Escobedo, Iris G.; 

Corona-Esquivel, Rodolfo; Marmolejo-Rodríguez, A.J.: marinE 

and continEntaL aSSEmBLaGES From San GrEGorio 

Formation (LatE oLiGocEnE – EarLy miocEnE), La 

Bocana rEGion, BaJa caLiFornia Sur, mEXico 


T11. Developments in Geophysical Investigations of Volcano 

Hydrothermal Systems: Exploration and Hazards (Posters) 



Booth # 

12-1 44 Martínez Reyes, José*; Vera Romero, Ivan; Estrada Jaramillo, 

Meliton; Nuñez Gonzalez, José; Lopez Andrade, Xicotencatl; 

Roldan Ahumada, Ma. Claudia; Peña, Rafael: GEothErmaL 

ProSPEction oF thE ciÉnEGa oF chaPaLa, michoacan, 

mÉXico 

12-2 45 Bouligand, Claire*; Glen, Jonathan; McPhee, Darcy K.: EStimatinG 

thE GEomEtry and EXtEnt oF aLtEration in 

hydrothErmaL arEaS oF yELLoWStonE nationaL ParK 

BaSEd on hiGh-rESoLution maGnEtic SurvEyS 

12-3 46 Hurwitz, Shaul*; Vandemeulebrouck, Jean; Sohn, Robert A.; Rudolph, 

Maxwell L.; Johnston, Malcolm J.S.; Karlstrom, Leif: GEodEtic, 

SEiSmic and acouStic mEaSurEmEntS oF EruPtionS at 

LonE Star GEySEr, yELLoWStonE nationaL ParK, uSa 


T17. Environmental Geochemistry (Posters) 



Booth # 

13-1 47 Gutierrez, Melida; Mickus, Kevin; Johnson, Elias*: utiLity oF 

GEoEyE in aSSESSinG riParian vEGEtation aLonG thE 

rio conchoS, mEXico 

13-2 48 Charles-Polo, Marcela*; Roy, Priyadarsi; Sanchez, Jóse Luis; Lozano, 

Rufino; Pi-Puig, Teresa; Romero, Francisco: a LatE QuatErnary 

GEochEmicaL rEcord From thE PaLEoaKE La SaLada, 

SouthErn chihuahua dESErt, mÉXico 

13-3 49 Santhiya, G.; Lakshumanan, C.; Jonathan, M.P*; Roy, P.D: 

EvaLuation oF coaStaL BEach SEdimEntS in chEnnai 

coaSt, SE coaSt oF india 

13-4 50 Tovar, Rosa E.*; Sedov, Sergey: StaBLE carBon 

iSotoPE SiGnaturES From PaLEoSoL humuS For 

rEconStructinG LatE PLEiStocEnE EnvironmEntS oF 

aXamiLPa, PuEBLa 

13-5 51 Cruz-Ortiz, Norma L.*; Audifred-Valdes, Alicia I.; Carrillo-Chávez, 

Alejandro: hEavy mEtaLS diStriBution in thE maconi 

mininG ZonE, QuErEtaro 

13-6 52 Morton-Bermea, Ofelia*; Hernández-Álvarez, Elizabeth; 

Amador-Muñoz, Omar; Villalobos-Pietrini, Rafael; Murillo-Tovar, 

Mario Alfonso; Hernández-Mena, Leonel; García-Arriola,

Maria Elena: hEavy mEtaL concEntration oF Pm2.5 in thE 

atmoSPhEric EnvironmEnt oF mEtroPoLitan ZonE oF 

mEXico city 

13-7 53 Miranda-Aviles, Raul*; Puy-Alquiza, Maria Jesus; Pérez-Arvizu, 

Ofelia; Casillas-Jimenez, Gabriela: anthroPoGEnic mEtaL 

contEnt and SEdimEntoLoGy oF ovErBanK SEdimEntS 

From thE mininG diStrict oF GuanaJuato, mEXico 

13-8 54 Salas-Megchun, Erik F.*; Ayala-De la Portilla, Elihu H.; Gerke, 

Tammie L.; Carrillo-Chávez, Alejandro; Levresse, Gilles: 

PrELiminary EnvironmEntaL GEochEmicaL EvaLuation 

oF thE minE WaStE matEriaL at thE Xichu mininG 

diStrict, SiErra Gorda naturaL rESErvE, northEaSt 

GuanaJuato StatE 

13-9 55 Pérez, Isabel*; Romero, Francisco: maGnEtic SuScEPtiBiLity 

and ELEctric conductivity aS a ProXy oF SoiL hEavy 

mEtaL PoLution From mininG and mEtaLLurGicaL 

arEaS 

13-10 56 Israde-Alcántara, Isabel*; Verduzco Cedeño, Luis Alberto; 

Carrillo-Chávez, Alejandro: GEoLoGicaL charactEriZation 

and EnvironmEntaL imPLicationS oF thE morELia dumP, 

10 yEarS LatEr 

aFtErnoon oraL 



S1. Amalgamation and Breakup of Pangea in the Americas II (IGCP 

597 (Origin and Evolution of Pangea) and IGCP 574 (Bending and 

Bent Orogens, Continental Ribbons)) 


J. Brendan Murphy, Jarda Dostal, and R. Damian Nance, Presiding 

14-1 14:30 Weber, Bodo*; Scherer, Erik E.; Martens, Uwe K.; Mezger, 

Klaus: ProvEnancE and EvoLution oF LoWEr 

PaLEoZoic rocKS From yucatan: nEW iSotoPic 

(hF, nd) and aGE EvidEncE 

14-2 14:50 Helbig, Maria*; Keppie, J. Duncan; Murphy, J. Brendan; 

Solari, Luigi: thE triaSSic–JuraSSic ayÚ comPLEX, 

SouthErn mEXico: dErivation From thE WEStErn 

marGin oF PanGEa-a 

14-3 15:10 Ortega-Obregón, Carlos*; Solari, Luigi; Ortega-Gutiérrez, 

Fernando; Elias-Herrera, Mariano: arc-rELatEd 

intruSionS in thE oaXacan comPLEX: EvidEncE 

For EarLy to LatE PErmian PaciFic PLatE 

SuBduction BEnEath thE WESt cEntraL marGin 

oF GondWana 

14-4 15:30 Keppie, John Duncan*; Galaz-Escanilla, Gonzalo; Helbig, 

Maria; Kirsch, Moritz; Dostal, Jaroslav; Murphy, J. Brendan; 

Nance, R. Damian: mEXican marGin oF PanGÆa: LatE 

PaLEoZoic tEctonic SWitchinG FoLLoWEd By 

EarLy mESoZoic ShiFt From iSLand to continEntaL 

arc durinG PanGÆa BrEaKuP 

14-5 15:50 Keppie, D. Fraser*; Keppie, J. Duncan: an aLtErnativE 

rEconStruction oF PanGEa a For middLE amErica 

With Both thE chortiS and yucatan BLocKS in thE 

GuLF oF mEXico 


T9. What Fossil Ages and Distributions Tell Us about the History of 

the Ancient Gulf of California 


Judith Smith, Ana Luisa Carreño, and Javier Helenes, Presiding 

15-1 14:30 Helenes, Javier*; Carreño, A. Luisa: KEynotE: nEoGEnE 

microPaLEontoLoGy and EvoLution oF thE 

northErn GuLF oF caLiFornia 

SESSION NO. 17 

15-2 14:50 López-Pérez, Ramón Andrés*: thE GuLF oF caLiFornia 

and thE oriGin oF thE modErn EaStErn PaciFic 

coraL Fauna 

15-3 15:10 Dolby, Greer A.*; Ellingson, Ryan; Day, Paul P.; Jacobs, 

David K.: hoW oriGination oF modErn FiSh 

LinEaGES may rEFLEct timinG oF WhEn thE GuLF oF 

caLiFornia oPEnEd: a nEW BioLoGicaL aPProach 

15-4 15:30 Bennett, Scott E.K.*; Oskin, Michael E.; Dorsey, Rebecca J.; 

Iriondo, Alex: voLcanic rocKS and microFoSSiLS 

conFirm a LatE miocEnE aGE For marinE Strata 

on iSLa tiBuron, GuLF oF caLiFornia 

15-5 15:50 Smith, Judith Terry*: tErtiary-cariBBEan moLLuSKS 

and thE anciEnt GuLF oF caLiFornia 

15-6 16:10 Vera, Diego*; González, Gerardo; Nava, Enrique: marinE 

invErtEBratES PaLEontoLoGy oF thE San Juan 

mEmBEr (EL ciEn Formation), BaJa caLiFornia Sur, 

mEXico 

15-7 16:30 Morales-Ortega, Priscila*; González-Barba, Gerardo; 

Nava-Sánchez, Enrique H.: PaLEontoLoGicaL 

corrELation oF macroinvErtEBratES in thE 

BatEQuE and tEPEtatE FormationS (PaLEocEnE- 

EocEnE) in WEStErn BaJa caLiFornia Sur, mEXico 


T13. Heterogeneous Geologic Formations: Modeling Spatial 

Variability 


Eric Morales Casique and Martín Díaz Viera, Presiding 

16-1 15:00 Franco-Estrada, Berenice*; Pinales-Munguía, Adán; 

Estrada-Gutiérrez, Guadalupe; Villalba, María de Lourdes; 

Franco-Rubio, Miguel: mathEmaticaL modELinG oF 

chihuahua-SacramEnto, taBaLaoPa-aLdama 

and EL SauZ-EnciniLLaS aQuiFErS uSinG viSuaL 

modFLoW 

16-2 15:20 Casar-Gonzalez, Ricardo*; Diaz-Viera, Martin Alberto; 

Mendez-Venegas, Javier; Hernandez-Maldonado, Victor; 

Checa-Rojas, Paola: thE roLE oF GEoStatiSticS in 

GEoLoGicaL and PEtroPhySicaL oiL rESErvoir 

modELinG 

16-3 15:40 Morales-Casique, Eric*; Medina, Priscila; Escolero-Fuentes, 

Oscar; Hernandez-Espriú, Antonio: modELinG SPatiaL 

diStriBution oF hydroFaciES uSinG tranSition 

ProBaBiLitiES 

16-4 16:00 Diaz-Viera, Martin Alberto*; Mendez-Venegas, Javier; 

Hernandez-Maldonado, Victor: SPatiaL StochaStic 

modELS aS a PoWErFuL tooL For uncErtainty 

modELinG in hEtEroGEnEouS rESErvoir 

FormationS 

16-5 16:20 Medina, Priscila*; Morales, Eric: GEoStatiSticaL anaLySiS 

oF LithoFaciES in thE aQuiFEr oF mEXico city 


T17. Environmental Geochemistry II 


Mario Villalobos, Laura E. Beramendi-Orosco, Francisco Romero, Priyadarsi Roy, 

and Ofelia Morton, Presiding 

17-1 14:30 Hudson-Edwards, Karen A.*; Jamieson, Heather E.; 

Lottermoser, Bernd G.: KEynotE: minE WaStES: PaSt, 

PrESEnt, FuturE 




T1. Silicic Volcanism I 

Friday, 30 march 2012 

morninG oraL 



Cathy J. Busby and Graham Andrews, Presiding 

18-1 08:30 Arciniega-Ceballos, Alejandra*; Dawson, P.; Chouet, B.: 

SourcE charactEriZation oF LP SEiSmicity at 

PoPocatEPEtL voLcano, mEXico 

18-2 08:50 Borselli, Lorenzo*; Sarocchi, Damiano: FLanK coLLaPSE 

and nEW rELativE inStaBiLity anaLySiS 

tEchniQuES aPPLiEd to voLcÁn dE coLima and 

mt. St. hELEnS 

18-3 09:10 Morgan, J.R.*; Morgan, George J.; Pecha, Mark: u/PB datinG 

oF tuFFS From thE aLvErSon voLcanicS in thE 

FoSSiL canyon and PaintEd GorGE arEaS oF thE 

coyotE mountainS, WEStErn SaLton trouGh, 

caLiFornia, uSa 

18-4 09:30 Glazner, Allen F.*; Bartley, John M.; Law, Bryan; Coleman, 

Drew S.: LaddEr diKES, craZy GEochEmiStry, 

and LiQuid immiSciBiLity(?) in othErWiSE SanE 

GranodioritES 

18-5 09:50 Carrasco-Núñez, Gerardo*; Willcox, Christopher; Dávila-Harris, 

Pablo; Branney, Michael: EXPLoSivE EruPtion hiStory 

and StructurE oF a LarGE SiLicic PiEcEmEaL 

caLdEra: LoS humEroS, cEntraL mEXico 

18-6 10:10 Martiny, Barbara M.*; Morán-Zenteno, Dante J.; de Silva, 

Shanaka; Zuñiga-Lagunes, Lilibeth; Flores-Huerta, Diana; 

Solari, Luigi; Martínez-López, Margarita; Roberge, Julie; 

González-Torres, Enrique A.: ProGrESSivE 

conStruction oF a BathoLith undEr thE 

tiLZaPotLa-taXco rEGion, SouthErn mEXico, 

in LatE EocEnE timE 

10:30 Break 

18-7 10:50 McDowell, Fred W.*; McIntosh, William: KEynotE: timinG 

oF intEnSE maGmatic EPiSodES in thE northErn 

and cEntraL SiErra madrE occidEntaL, WEStErn 

mEXico 

18-8 11:20 Henry, Christopher D.*; McIntosh, William C.; McDowell, 

Fred W.; Lipman, Peter W.; Chapin, Charles E.: thE 

cEnoZoic iGnimBritE FLarEuP in WEStErn north 

amErica: diStriBution, timinG, voLumE, and 

tEctonic rELationS 

18-9 11:40 Miller, Jonathan*; Ryan, Mark; Miller, Calvin; Claiborne, 

Lily Lowery; Johnson, Brent; Colombini, Lindy L.S.; Wooden, 

Joseph L.; Walker, Barry A. Jr.; Lidzbarski, Marsha: inSiGhtS 

into thE GroWth oF SiLicic maGma SyStEmS 

From thE GEochronoLoGic, ELEmEntaL, and 

iSotoPic rEcord oF Zircon in miocEnE PLutonS 

and voLcanic rocKS oF thE coLorado rivEr 

EXtEnSionaL corridor, nEvada 

18-10 12:00 Miller, Calvin F.*; Padilla, Abraham De Jesus; Pamukcu, Ayla; 

Carley, Tamara L.; Claiborne, Lily L.; Flanagan, Daniel M.; 

Gualda, Guilherme A.R.; Wooden, Joseph L.; Miller, Jonathan; 

Lidzbarski, Marsha: rEinviGoratinG StaGnant SiLicic 

maGma SyStEmS: voLcanic and PLutonic viEWS 


18-11 12:20 Roberge, Julie*; de Silva, Shanaka; Viramonte, Jose G.; 

Arnosio, Marcelo; Beccio, Raúl: maGma dynamicS oF thE 

cErro BLanco voLcanic comPLEX, arGEntina, 

BaSEd on voLatiLES, maJor and tracE ELEmEntS 

in mELt incLuSionS 


T3. Convergent Margin of Western Pangea: Triassic-Jurassic 

Magmatism, Sedimentation, and Tectonics from Colombia to Oregon 


Timothy F. Lawton, José Rafael Barboza-Gudiño, and Roberto Molina-Garza, 

Presiding 


19-1 08:40 Franco-Rubio, Miguel*; Caballero-Miranda, Cecilia I.; 

Alva-Valdivia, Luis M.; Oviedo, Angelica; Urrutia-Fucugauchi, 

Jaime; Martínez-Reyes, Fernando; Torres-Knight, Ricardo; 

Riggs, Nancy R.; González-León, Carlos M.; López-Santillán, 

Roberto: PErmian maGmatic arc rELatEd to thE 

ouachita SuturE ZonE in chihuahua, mEXico 

19-2 09:00 Barboza, Rafael*; Zavala, Aurora: mEXican LatE 

PaLEoZoic-EarLy mESoZoic rEmnant BaSin at 

thE WEStErnmoSt cuLmination oF thE ouachitamarathon 

BELt 

19-3 09:20 Riggs, Nancy R.*; Howell, Evan R.; Oberling, Zachary A.; 

Barth, Andrew P.; Walker, J. Douglas: aSSESSinG SourcES 

oF ZirconS in uPPEr triaSSic SEdimEntary Strata 

and thEir rELation to thE cordiLLEran maGmatic 

arc 

19-4 09:40 Bayona, Germán*; Cardona, Agustin; Vásquez, Mónica; 

Montes, Camilo: SuBduction to riFt-rELatEd 

EvoLution oF triaSSic and JuraSSic rocKS in thE 

northErn andES 

19-5 10:00 Ortega-Flores, Berlaine*; Solari, Luigi; Ortega-Obregón, Carlos: 

dEtritaL Zircon u-PB GEochronoLoGy oF thE 

toLiman SEQuEncES, cEntraL mEXico: PoSSiBLE 

ProvEnancE SourcES 

10:20 Break 

19-6 10:40 Lawton, Timothy F.*; Gilbert, John C.; Amato, Jeffrey M.: aGE 

oF thE JuraSSic arc SyStEm in SouthErn ariZona 

19-7 11:00 Molina Garza, Roberto*: arE thErE too many riFt 

BaSinS in mEXico? 

19-8 11:20 Silva-Tamayo, Juan Carlos*; Cardona, Agustin; Bayona, 

Germán; Pardo, Andres; Sial, Alcides N.; Valencia, 

Victor; Montes, Camilo; Alvarez, Alejandtra; Jimenez, 

Harold: muLti-ProXy aGE conStrainS oF LoWEr 

crEtacEouS marinE EXtEnSion and ocEanic 

anoXia in northErn coLomBia: PaLEoGEoGraPhic 

imPLicationS 

19-9 11:40 Zapata, Sebastian*; Cardona, Agustin; Bayona, Germán; 

Bustamante, Camilo; Mora, Andrés; Silva-Tamayo, Juan Carlos; 

Valencia, Victor: tracinG maJor chanGES in middLE 

mESoZoic PLatE convErGEncE in thE northErn 

andES: inSiGhtS From thE JuraSSic maGmatic 

rEcord oF SouthErn coLomBia 

19-10 12:00 Pignotta, Geoffrey*; Ostrenga, Will; Nushart, Nathan: timE 

tranSGrESSivE Strain rEcordEd JuraSSic and 

EarLy crEtacEouS PLutonS oF thE cEntraL 

coaSt PLutonic comPLEX, BELLa cooLa, BritiSh 

coLumBia, canada 

19-11 12:20 Castonguay, Samuel R.*; Miller, Marli Bryant: 

imBricatE thruSt FauLtS and tiGht FoLdS in 

nEoProtEroZoic FormationS oF thE virGin 

SPrinG-amarGoSa chaoS oF SouthErn dEath 

vaLLEy, ca


T10. The Caribbean Plate and its Geologic Connections with 

North and South America 


Luigi Solari, Uwe Martens, and James Pindell, Presiding 

20-1 08:30 Elias-Herrera, Mariano*; Ortega-Gutiérrez, Fernando; 

Macías Romo, Consuelo; Sánchez-Zavala, José Luis; 

Solari, Luigi; Martínez-Hernández, Enrique: tEctonic 

imPLicationS oF La montaÑa GrouP: a nEW LoWEr 

crEtacEouS StratiGraPhic unit in thE PuZZLinG 

truncatEd continEntaL marGin oF SouthErn 

mEXico 

20-2 08:50 Witt, Cesar*; Rangin, Claude; Carter, Andrew; Brichau, 

Stephanie: thE tranSPrESSivE LEFt-LatEraL SiErra 

madrE dE chiaPaS and itS BuriEd Front in thE 

taBaSco PLain (South mEXico) 

20-3 09:10 Torres de León, Rafael*; Solari, Luigi; Ortega-Gutiérrez, 

Fernando; Martens, Uwe: thE chortÍS BLocK - 

SouthWEStErn mEXico connEction durinG 

thE LatE mESoZoic - cEnoZoic: u-PB Zircon 

conStraintS 

20-4 09:30 Molina Garza, Roberto*; Rogers, Rob; van Hinsbergen, 

Douwe: PaLEomaGnEtiSm oF thE vaLLE anGELES 

GrouP, honduraS, rEviSitEd: EvidEncE oF LarGE 

maGnitud cEnoZoic rotation 

20-5 09:50 Guzman-Speziale, Marco*: SEiSmoLoGicaL conStraintS 

on thE motion oF thE cEntraL amErica ForEarc 

SLivEr 

20-6 10:10 Cardona, Agustin*; Montes, Camilo; Bayona, Germán; 

Jaramillo, Samuel; Vanegas, Jakeline; Silva-Tamayo, 

Juan Carlos; Valencia, Victor; Quiroz, Luis I.; Pardo, Andres; 

Weber, Marion: rEadinG thE FraGmEntary rEcord 

oF LatE crEtacEouS to EocEnE arc-continEnt 

coLLiSion and SuBduction initiation in thE 

SouthErn marGin oF thE cariBBEan 

10:30 Break 

20-7 10:50 Quiroz, Luis I.*; Buatois, Luis A.; Mangano, Maria Gabriela; 

Cardona, Agustin; Montes, Camilo; Silva-Tamayo, Juan Carlos; 

Jaramillo, Carlos: miocEnE dELtaic SEdimEntation in 

thE FaLcon BaSin and itS rELation to cLimatE and 

cariBBEan tEctonicS 

20-8 11:10 Lara, Mario*; Cardona, Agustin; Valencia, Victor; Weber, 

Marion; De la Parra, Felipe; Ibanez, Mauricio; López-Martínez, 

Margarita; Montes, Camilo: middLE miocEnE voLcaniSm 

in thE South cariBBEan dEFormEd BELt (Sinu BELt, 

northErn coLomBia): PEtrotEctonic hyPothESiS 

20-9 11:30 Montenegro, Omar Camilo*; Bayona, Germán; Ojeda, 

Carolina; Ayala, Carolina; Cardona, Agustin; Valencia, Victor: 

intraPLatE uPLiFt and BaSin GEnEration on 

thE SW cornEr oF thE maracaiBo BLocK: diStaL 

EvidEncES oF cariBBEan PLatEau - northWEStErn 

South amErica coLLiSion 

20-10 11:50 Villagómez, Diego*; Spikings, Richard: thE crEtacEouS 

and tErtiary tEctonic hiStory oF WEStErn 

coLomBia 

20-11 12:10 Silva-Tamayo, Juan Carlos*; Cardona, Agustin; Pardo, Andres; 

Ducea, Mihai; Rosero, Sebastian; Montes, Camilo; Valencia, 

Victor; Bayona, Germán: Sr-iSotoPE StratiGraPhy aS 

an aLtErnativE ProvEnancE tooL oF oLiGocEnE 

and miocEnE SEdimEntS aLonG nW coLomBia: 

PaLEoGEoGraPhic imPLicationS For thE 

cariBBEan PLatE- South amErica intEraction 


20-12 12:30 Pindell, James*; Miranda, Ernesto: KEynotE: PLatE 

Boundary controL on thE LinKEd KinEmatic 

hiStoriES oF thE macuSPana, aKaL-rEForma, 

comaLcaLco, and dEEP WatEr camPEchE BaSin 

tEctonic ELEmEntS, SouthErn GuLF oF mEXico 


T12. Limnogeology Studies and Paleoenvironmental Records 

from Ancient and Modern Lakes 

08:30, Hotel Misión Juriquilla, Mariposa 2 

Beatriz Ortega, Margarita Caballero, and Socorro Lozano, Presiding 


21-1 08:40 Correa-Metrio, Alexander*: KEynotE: SourcE oF 

miGrantS and no-modErn-anaLoG communitiES: 

thE comPLEXitiES oF thE mEXican LandScaPE 

21-2 09:10 Zawisza, Edyta*; Caballero, Margarita; Ortega, Beatriz; 

Lozano, Socorro: SuBFoSSiL cLadocEra SuccESion in 

troPicaL LaKE tacÁmBaro (WEStErn mEXico) 

21-3 09:30 Caballero, Margarita*; Lozano, Socorro; Ortega, 

Beatriz; Zawisza, Edyta; Sánchez Dzib, Yajaira: 

PaLEoLimnoLoGicaL EvidEncE oF hoLocEnE 

tranSitionS BEtWEEn mEromictic and hoLomictic 

miXinG rEGimES in a mid aLtitudE troPicaL LaKE in 

WEStErn mEXico 

21-4 09:50 Domínguez-Vázquez, Gabriela*; Osuna-Vallejo, Veronica; 

Israde-Alcántara, Isabel: PaLEoEnvironmEntaL 

conditionS at thE BaJio durinG thE LaSt GLaciaL 

maXimum 

21-5 10:10 Torres, Esperanza*; Lozano, Socorro; Roy, Priyadarsi; 

Caballero, Margarita; Ortega, Beatriz: a LaSt GLaciaL 

miLLEnniaL ScaLE rEcord From LaKE chaLco, 

BaSin oF mEXico 

10:30 Break 

21-6 10:50 Lozano, Socorro*; Torres, Esperanza; Vazquez, Gabriel; 

Ortega, Beatriz; Caballero, Margarita: EvidEncES oF 

cLimatE chanGE, voLcanic and human imPact 

durinG thE LatE PLEiStocEnE and hoLocEnE: 

thE rEcord oF LaKE ZirahuEn, WEStErn cEntraL 

mEXico 

21-7 11:10 Perez, Liseth C.*; Escobar, Jaime H.; Hodell, David A.; 

Brenner, Mark; Curtis, Jason; Lozano, Socorro; Schwalb, Antje: 

nEotroPicaL non-marinE oStracodES aS 

indicatorS oF PaSt LaKE LEvEL and WatEr 

chEmicaL comPoSition 

21-8 11:30 Ortega, Beatriz*; Soler, Ana Maria; Caballero, Cecilia; 

Gonzalez, Jose Antonio; Lozano, Socorro; Caballero, 

Margarita: rocK maGnEtiSm oF a 122 m LonG 

LacuStrinE SEQuEncE in chaLco BaSin, cEntraL 

mEXico: PrELiminary rESuLtS 

21-9 11:50 Gonzalez, Silvia Irma*; Huddart, David; Leng, Melanie; 

Metcalfe, Sarah: EarLy PLEiStocEnE LacuStrinE 

SEQuEncES From thE vaLSEQuiLLo BaSin, cEntraL 

mEXico 

21-10 12:10 Amezcua, N.*; Macquaker, Joe H.S.; Gawthorpe, Rob: 

LacuStrinE carBonatE LithoFaciES oF thE LatE 

nEoGEnE mayrÁn Formation, northEaSt mÉXico 

21-11 12:30 Batbaatar, J.*; Gillespie, Alan R.; Schreiber, B. Charlotte: 

tEctonicS and EnvironmEnt at thE WEStErn End 

oF thE BaiKaL riFt: PaLEoLaKE SEdimEnt rEcord 

From darhad BaSin, northErn monGoLia 




PoStEr 


Geochemistry and Petrology of Igneous Rocks (Posters) 



Booth # 

22-1 1 Ruiz, Elvira Cristina Sr.*; Toro, Luz Mary; Garcia Casco, Antonio; 

Blanco-Quintero, Idael; Moreno, Mario; Gómez, Arley; Vinasco, 

Cesar: GEochEmicaL comPoSition and oriGin oF 

mEtaBaSitE rocKS From thE arQuia comPLEX 

(cEntraL coLomBia) 

22-2 2 Toro Toro, Luz Mary Sr.*; Moreno, Mario; Blanco-Quintero, Idael; 

Ruiz, Elvira Cristina Sr.; Gómez, Arley; Vinasco, Cesar: 

comPoSicion GEoQuimica y oriGEn dE LaS mEtaBaSitaS 

dEL comPLEJo caJamarca, cordiLLEra cEntraL dE 

coLomBia 

22-3 3 Beraldi-Campesi, Hugo*: cuEXcomatE: From thE SmaLLESt 

voLcano to thE BiGGESt GEySEr on Earth 

22-4 4 Cisneros de León, Alejandro O. Sr.*: PEtroGraPhy and 

GEochEmiStry oF anorthoSitES in thE chiaPaS maSSiF 

22-5 5 Colby, Thomas A.*; Voyles, Erin M.; Rayburn, Jonathan Z.; Carrasco, 

Taylor L.; Girty, Gary H.: toWard a uniFiEd modEL For thE 

WEathErinG oF GranitoidS: thE caSE For K-FELdSPar 

dEFiciEnt SyStEmS 

22-6 6 García-Rodríguez, Enrique*; Franco-Rubio, Miguel: Zircon 

SEParation By GravimEtric, maGnEtic and 

ELEctroStatic tEchniQuES at thE mEtaLLurGicaL 

LaBoratory 


Structural Geology/Tectonics (Posters) 



Booth # 

23-1 7 Mendoza-Rosales, Claudia C.*; Centeno-García, Elena; Silva-Romo, 

Gilberto; Campos-Madrigal, Emiliano: thE chiviLLaS Formation 

in SouthEaSt oF mEXico: maGmatic and StratiGraPhic 

EvidEncE For BarrEmian riFtinG oF thE GuLF oF 

mEXico 

23-2 8 Soria-Caballero, Diana C.*; Velázquez-Bucio, M. Magdalena; 

Mennella, Luca; Garduño-Monroy, Victor Hugo: thE morELiaacamBay 

FauLt SyStEm 

23-3 9 Vásquez, Alberto Serrano*; Tolson, Gustavo; Gutierrez Navarro, 

Rodrigo; Morales-Luis, René: dEFormation oF thE 

tEPoScoLuLa Formation BEtWEEn chiLa dE LaS 

FLorES, PuEBLa, and huaJuaPan dE LEÓn, oaXaca 

23-4 10 Alaniz-Alvarez, Susana A.*; Nieto-Samaniego, A.F.; Santamaría-Díaz, 

Alfredo: cEnoZoic activity oF thrEE n-S trEndinG 

BaSEmEnt FauLtS in SouthErn mEXico 

23-5 11 Morgan, George J.*; Morgan, J.R.: rEcEnt maPPinG in thE 

coyotE mountainS, WEStErn SaLton trouGh, imPEriaL 

county SouthErn caLiFornia, uSa 

23-6 12 Perez Gutierrez, Rosalva*; Jeronimo Villa, Maribel; Solari, Luigi: 

StructuraL EvoLution oF XoLaPa comPLEX in thE 

ayutLa-cruZ GrandE SEctor, SouthErn mEXico 

23-7 13 Bazán Perkins, Sergio Dale Jr.*; Bazán Barrón, Sergio Sr.: 

tEctonic EvoLution oF mEXico, durinG thE LatE 

PhanEroZoic 



T1. Silicic Volcanism (Posters) 



Booth # 

24-1 14 Orozco-Esquivel, Teresa*; Ferrari, Luca; López-Martínez, Margarita: 

nEoGEnE voLcaniSm at thE northEaStErn tranSmEXican 

voLcanic BELt: EvidEncE For arc-WidE FELSic- 

BimodaL voLcaniSm rELatEd to SLaB roLLBacK 

24-2 15 Torres-Hernandez, Jose Ramon*; Sieve, Claus; Caballero-Miranda, 

Cecilia I.; Alva Valdivia, Luis: an oLiGocEnE caLdEra at thE 

SouthErn Part oF thE mEXican mESa cEntraL, San LuiS 

PotoSÍ, mEXico 

24-3 16 Reyes-Orozco, Violeta Mirthala*; Orozco-Esquivel, Teresa; Ferrari, 

Luca; Velasco-Tapia, Fernando; López-Martínez, Margarita: SiLicic 

to BimodaL oLiGocEnE voLcaniSm in thE ZimaPÁn arEa, 

mEXico: StratiGraPhy, aGE and dEFormation 

24-4 17 Andrews, Graham*; Busby, Cathy J.; McDowell, Fred W.: a 

comBinEd u-PB, hF, and o in Zircon iSotoPic Study oF 

thE northErn SiErra madrE occidEntaL SiLicic LarGE 

iGnEouS ProvincE 

24-5 18 Petrone, Chiara Maria*; Ferrari, Luca; Orozco-Esquivel, Teresa; 

López Martínez, Margarita: PEtroGEnESiS and GEodynamic 

SiGniFicancE oF SiLicic voLcaniSm in thE WEStErn 

tranS-mEXican voLcanic BELt 

24-6 19 Díaz-Bravo, B.A.*; Morán-Zenteno, D.J.: Formation ProcESS oF 

PhEnocrySt-rich and PhEnocrySt-Poor iGnimBritES 

oF thE EXhumEd EocEnE SuLtEPEc-GoLEta voLcanic 

cEntEr oF SouthErn mEXico 

24-7 20 Carley, Tamara L.*; Miller, Calvin F.; Wooden, Joseph; Padilla, 

Abraham De Jesus; Russel, Kathleen M.; Bindeman, Ilya; Schmitt, 

Axel K.; Economos, Rita: JuvEniLE SiLicic maGmatiSm 

and cruSt conStruction: icELand aS a modEL For 

EarLy-Earth or icELand aS a uniQuE PEtroGEnEtic 

EnvironmEnt? 

24-8 21 Lidzbarski, Marsha*; Miller, Jonathan; Miller, Calvin; Wooden, 

Joseph L.; Vazquez, Jorge A.; Pamukcu, Ayla S.; Carley, Tamara L.; 

Gualda, Guilherme A.R.: GEochronoLoGy and tracE 

ELEmEnt anaLySiS oF PEach SPrinG tuFF ZirconS and 

thEir BEarinG on GroWth oF thE PEach SPrinG tuFF 

maGma chamBEr and EruPtion 

24-9 22 Gómez-Vasconcelos, Martha Gabriela*; Garduño-Monroy, 

Víctor Hugo; Macías, José Luis: GEoLoGy and voLcanic 

StratiGraPhy oF SiErra dE miL cumBrES 


T2. Ore Deposits and Ore Genesis in the American Cordillera 

(Posters) 



Booth # 

25-1 23 Skewes, M. Alexandra*: GEnESiS oF Giant cu-mo dEPoSitS 

in thE andES oF cEntraL chiLE (32-34°S) aS a rESuLt oF 

ridGE SuBduction cauSinG uPLiFt, EroSion and arc 

miGration 

25-2 24 Vassallo, L.F.*: GEoLoGy and aLtEration oF voLcanicS 

hoStinG thE JuraSSic San nicoLÁS vhmS dEPoSit 

(SouthErn ZacatEcaS, mEXico) 

25-3 25 García Dobarganes-Bueno, Juan Esteban*; Levresse, Gilles; 

Aranda-Rodríguez, Armando; Pérez-Pérez, Pablo Francisco: 

charcaS intruSivES comPLEX: aGE and GEochEmiStry, 

charcaS mininG diStrict, mEXico 

25-4 26 Lyons, James I.; Kallstrom, Michael J.; Kyle, J. Richard*: 

mEtaLLoGEny oF thE BatoPiLaS nativE SiLvEr diStrict, 

chihuahua, mEXico

25-5 27 Caballero, Juan Antonio Sr.*; Sanchez, Luis Edmundo Sr.; Espinosa, 

Enrique G. Sr.: miSSiSSiPPi vaLLEy tyPE dEPoSitS in nE 

mEXico 

25-6 28 Ahn, Hyein; Kyle, J. Richard*; Miller, Nathan R.: oriGin oF 

thE non-SuLFidE Zn dEPoSitS oF thE SiErra moJada 

diStrict, coahuiLa, mEXico 


T3. Convergent Margin of Western Pangea: Triassic-Jurassic 

Magmatism, Sedimentation, and Tectonics From Colombia to 

Oregon (Posters) 



Booth # 

26-1 29 Silva-Romo, Gilberto*; Mendoza-Rosales, Claudia C.; 

Campos-Madrigal, Emiliano; Centeno-García, Elena: triaSSic 

FLuviaL FaciES in miXtEca tErranE, SouthErn mEXico 

26-2 30 Sierra-Rojas, Maria Isabel*; Molina-Garza, Roberto S.; 

Palchor-Ocampo, Anderzon Felipe; Franco, Cezar: 

SEdimEntoLoGy and PaLEomaGnEtiSm oF thE ZicaPa 

Formation, GuErrEro: an aPProach to undErStandinG 

oF thE EarLy crEtacEouS activE marGin in WEStErn 

oaXaQuia PrEviouS thE inStauration oF thE 

GuErrEro-morELoS PLatForm 

26-3 31 Campos-Madrigal, Emiliano*; Centeno-García, Elena; 

Mendoza-Rosales, Claudia C.; Silva-Romo, Gilberto: 

SEdimEntation, dEFormation and maGmatiSm oF thE 

JuraSSic ayuQuiLa and tEcomaZÚchiL FormationS 

in tEXcaLaPa, PuEBLa - huaJuaPan dE LEon, oaXaca 

rEGion 

26-4 32 Zavala, Aurora*; Barboza, Rafael: GEochronoLoGy and 

GEochEmEStry oF JuraSSic voLcanic rocKS in northcEntraL 

to northEaStErn mEXico: imPLicationS For 

thE oriGin and EvoLution oF thE naZaS arc 

26-5 33 Nova, Giovanny*; Montaño, Paola Catalina; Bayona, Germán; 

Rapalini, Augusto.E.; Montes, Camilo; Silva, Cesar: 

PaLEomaGnEtiSm oF JuraSSic and LoWEr crEtacEouS 

rocKS in thE WEStErn FLanK oF thE PEriJa ranGE; 

conStraintS For JuraSSic PaLEoGEoGraPhy and 

rotationS 

26-6 34 Montaño, Paola Catalina*; Nova, Giovanny; Bayona, Germán; 

Montenegro, Omar; Cardona, Agustin; Montes, Camilo; Mahecha, 

Hernando; Valencia, Victor: SEdimEntoLoGicaL and 

ProvEnancE anaLySiS oF thE JuraSSic La Quinta 

Formation in thE WEStErn FLanK oF thE PEriJa ranGE 


T5. Mechanisms of Arc Magma Generation Along the Cordillera 

(Posters) 



Booth # 

27-1 35 Vázquez-Duarte, Alma C.*; Gómez-Tuena, Arturo: iGnEouS 

PEtroGEnESiS oF tEQuiLa voLcano, WEStErn mEXico 

27-2 36 Juárez-López, Karla*; Martínez-Serrano, Raymundo G. Sr.; 

Valadez-Cabrera, Sac-Nicté; García-Tovar, Gloria P.; Solís-Pichardo, 

Gabriela: maGmatic EvoLution in thE EaStErn SEctor 

oF thE tranS-mEXican voLcanic BELt: chichicuautLa 

voLcanic FiELd, hidaLGo, mEXico 

27-3 37 Torres-Carrillo, Xochitl G.*; Delgado-Argote, Luis Alberto; 

Avilez-Serrano, Porfirio; Weber, Bodo: GEoLoGic anaLySiS oF 

thE San JErÓnimo PLuton in thE SouthErn Part oF 

thE PEninSuLar ranGES BathoLith, BaJa caLiFornia, 

mEXico 

27-4 38 Díaz-Bravo, Beatriz*; Gómez-Tuena, Arturo: GEochEmicaL 

FEaturES oF aLKaLinE BaSaLtS in thE tEPic-ZacoaLco 

riFt, WEStErn mEXican voLcanic BELt 


27-5 40 Pompa-Mera, Valerie*; Schaaf, Peter; Hernández-Treviño, Teodoro; 

Weber, Bodo; Solís-Pichardo, Gabriela; Villanueva-Lascurain, 

Daniel: GEochEmiStry and GEochronoLoGy oF 

iSLa maria madrE iGnEouS rocKS: PaLEotEctonic 

intErPrEtationS 

27-6 41 Valadez-Cabrera, Sac-Nicté*; Martínez-Serrano, Raymundo G.; 

García-Tovar, Gloria P.; Juárez-López, Karla; Solís-Pichardo, 

Gabriela: GEochEmicaL and iSotoPic EvidEncES oF thE 

maGmatic SourcES in thE XihuinGo-La PaiLa voLcanic 

FiELd, EaStErn SEctor oF thE tranS-mEXican voLcanic 

BELt 

27-7 42 García-Sierra, Mayra G.*; Orozco-Esquivel, Teresa; Velasco-Tapia, 

Fernando; Ferrari, Luca; López-Martínez, Margarita: 

PEtroGraPhy and GEochEmiStry oF cErro San martÍn 

and SiErra dE LoS caBaLLoS miocEnE voLcaniSm, 

north-cEntraL tranS-mEXican voLcanic BELt 



Variations: What Caused the Cretaceous-Paleogene Shortening 

across the Mexican Cordillera? (Posters) 



Booth # 

28-1 43 Rueda-Gaxiola, Jaime*: iS thE mEXican SiErra madrE 

oriEntaL FoLd and thruSt BELt rEaLLy a LaramidE 

oroGEnic BELt? 

28-2 44 Palacios García, Norma Betania*; Martini, Michelangelo: 

ProvEnancE chanGES For SandStonES From thE 

SiErra dE LoS cuarZoS (cEntraL mEXico): thE 

PoSSiBLE rEcord oF a tErranE accrEtion 

28-3 45 Jacques-Ayala, César*; Jacobson, Carl E.; Barth, Andrew P.; 

García y Barragán, Juan Carlos: comParativE LatE JuraSSic- 

LatE crEtacEouS SEdimEntary and tEctonic 

EvoLution oF nW Sonora, mEXico and SE caLiFornia- 

SW ariZona, uSa 

28-4 46 Manea, Vlad Constantin*; Manea, Marina: GEodynamic 

modELinG oF FLat SLaB SuBduction 

28-5 47 Hernández Treviño, Teodoro*; Schaaf, Peter; Solís-Pichardo, 

Gabriela; Meza García, Vianney: GEochronoLoGy oF iGnEouS 

rocKS and itS rELation to tEctonic ProcESSES in thE 

chiLPancinGo – tiErra coLorada rEGion, GuErrEro 

StatE, SouthErn mEXico 

28-6 48 Gonzalez-Becuar, Elizard*; Perez-Segura, Efrén: thE PuErta 

dEL SoL mEtamorPhic corE comPLEX: tracE ELEmEnt 

and iSotoPic GEochEmiStry, comPariSon BEtWEEn 

Laramidic PLutonS in cEntraL Sonora, mEXico 

28-7 49 Gracia-Marroquín, Diego*; Cerca, Mariano; Barrientos-García, 

Bernardino: accrEtion cycLES in ductiLE WEdGES With a 

FrontaL ramP oBSErvEd in SandBoX modELS 


T10. The Caribbean Plate and Its Geologic Connections with 

North and South America (Posters) 



Booth # 

29-1 50 Tunesi, Annalisa; Ferrari, Luca*; Ferrario, Alfredo; Martini, 

Michelangelo; López Martínez, Margarita: a maFic and 

uLtramaFic SuitE in coaStaL GuErrEro, SouthErn 

mEXico: EvidEncE For an EocEnE, EXtEnSionaL EPiSodE 

rELatEd to thE riFtinG oF thE chortiS BLocK? 

29-2 51 Villagómez, Diego*; Pindell, James; Martens, Uwe K.; Donelick, 

Raymond; Spikings, Richard: thE thErmo-tEctonic hiStory 

oF SouthErn mEXico, PrELiminary rESuLtS From thE 

chiaPaS maSSiF 



29-3 52 Villagómez, Diego*; Spikings, Richard: cEnoZoic couPLinG 

BEtWEEn thE SouthErn cariBBEan and thE 

northWEStErn South amErican PLatES conStrainEd 

By aPatitE FiSSion tracK thErmochronoLoGy From 

thE SiErra nEvada dE Santa marta (coLomBia) 


T12. Limnogeology Studies and Paleoenvironmental Records 

From Ancient and Modern Lakes (Posters) 



Booth # 

30-1 53 Ortega, Beatriz*; Vazquez, Gabriel; Lozano, Socorro; Caballero, 

Margarita; Parra, Angel; Leon, Paul Daniel; Schaaf, Peter; Rodriguez, 

Alejandro: LaKE ZirahuEn (cEntraL mEXico): an EXamPLE 

oF LacuStrinE SEdimEntation in voLcanic SEttinGS 

30-2 54 Chavez-Lara, Claudia*; Roy, Priyadarsi; Caballero, Margarita; 

Lakshumanan, C.: LacuStrinE oStracodS From 

chihuahua dESErt oF mEXico and inFErrEd LatE 

QuatErnary PaLEoEcoLoGicaL conditionS 

30-3 55 Vazquez, Gabriel*; Ortega, Beatriz; Lozano, Socorro; Caballero, 

Margarita: LatE PLEiStocEnE-hoLocEnE EnvironmEntaL 

maGnEtiSm From LaKE ZirahuEn SEdimEntS, michoacan, 

mEXico 

30-4 56 Giles, Gustavo*; Caballero, Margarita; Ruiz Fernández, Carolina; 

Lozano, Socorro; Vazquez, Gabriela: LatE hoLocEnE diatom 

rEcord From LaKE chaLchoaPan, EaStErn mEXico 

30-5 57 Rivas, Jorge*; Vazquez, Gabriel; Ortega, Beatriz: EnvironmEntaL 

maGnEtiSm Study oF WEStErn mEXico voLcanic SoiLS 

and thEir rELationShiP With LaKE SEdimEntS 

30-6 58 Sosa-Nájera, Susana*; Lozano, Socorro; Correa-Metrio, Alexander; 

Roy, P.D; Caballero, Margarita: vEGEtationaL chanGES and 

cLimatic inFErEncES in nW oF mEXico durinG thE LatE 

hoLocEnE 

30-7 59 Castro-López, Valerio*; Domínguez-Vázquez, Gabriela: cLimatic 

and antroPoGEnic inFLuEncE in thE vEGEtation oF EL 

BaJio durinG thE hoLocEnE 

30-8 60 Cuna, Estela*; Caballero, Margarita; Lozano, Socorro; 

Ruiz-Fernández, Carolina: PaLEoEnvironmEntaL rEcord 

From tWo hiGh mountain troPicaL LaKES in mEXico 

30-9 61 Israde-Alcántara, Isabel*; Sanchez-Gonzalez, María de Jesús; 

Garduño-Monroy, Victor Hugo: thE LatE PLEiStocEnEhoLocEnE 

Limit in thE BaSinS oF ZacaPu and cuitZEo 

north michoacÁn BaSEd in thE diatom rEcord 

aFtErnoon oraL 



Structural Geology/Tectonics 


31-1 14:30 Singleton, John S.*: miocEnE StructuraL EvoLution 

oF thE BucKSKin-raWhidE mEtamorPhic corE 

comPLEX, WESt-cEntraL ariZona 

31-2 14:50 Ortega-Gutiérrez, Fernando*: tEctonic SyStEmS oF 

mEXico, 50 yEarS oF diScovEry and innovation 

31-3 15:10 McKee, Ryan A.*; Miller, Jonathan S.: StratiGraPhy 

and StructurE oF thE northErn hiGhLand 

ranGE, coLorado rivEr EXtEnSionaL corridor, 

SouthErn nEvada 

31-4 15:30 Poole, Forrest G.; Amaya-Martínez, Ricardo*; Harris, Anita G.; 

Sandberg, Charles A.; Page, William R.: PaLEoGEoGraPhy 

and StratiGraPhy oF PaLEoZoic Strata in thE 


rancho EL BÍSani arEa, northWEStErn Sonora, 

mEXico 

31-5 15:50 Aranda-Gómez, José Jorge*; Cerca-Martínez, Mariano; 

Rocha-Treviño, Luis; Carreon-Freyre, Dora; Levresse, Gilles: 

Gravity-drivEn dEFormation in dESiccatEd LaKE 

SEdimEntS oF rinc”n dE ParanGuEo, cEntraL 

mÉXico 

31-6 16:10 Flanagan, Daniel M.*; Furbish, David J.; Miller, Calvin F.; 

Claiborne, Lily L.: imProvinG thE StatiSticaL viaBiLity 

oF u-th modEL aGE hiStoGramS and ProBaBiLity 

dEnSity curvES With montE carLo SimuLation 

31-7 16:30 Delavari, Morteza; Amini, Sadaraddin*: mid-ocEan ridGE 

and SuPra-SuBduction ZonE PEtroLoGicaL 

charactEriSticS From thE nEhBandan oPhioLitic 

comPLEX, EaStErn iran 


T1. Silicic Volcanism II 


Cathy J. Busby and Graham Andrews, Presiding 

32-1 14:30 Roldan-Quintana, Jaime Sr.*; Aguirre-Díaz, Gerardo J.; 

Layer, Paul W.: thE San PEdro Summit caLdEra, 

tEmaScaLcinGo, mEXico 

32-2 14:50 Huddart, David*; Gonzalez, Silvia Irma: dEPoSitionaL 

ProcESSES,chronoLoGy and StratiGraPhy, 

tLaLoc iGnimBritE aPron, BaSin oF mEXico 

32-3 15:10 Morán Zenteno, Dante J.*; Díaz Bravo, Beatriz A.; Mori, 

Laura; González-Torres, Enrique A.; Chapela-Lara, Maria; 

Ramírez Perez Amaya, Erick: timinG, EvoLution and 

voLcanic StructurES oF PaLEoGEnE SiLicic 

voLcanic cEntErS oF thE northErn SiErra madrE 

dEL Sur, SouthErn mEXico 

32-4 15:30 Busby, Cathy J.*: EXtEnSionaL and tranStEnSionaL 

continEntaL arc BaSinS oF SouthWESt u.S. and 

mEXico 

32-5 15:50 Kay, Suzanne Mahlburg*; Calixto, Frank; Heit, Ben; Liang, 

Xiafeng; Coira, Beatriz; Mulcahy, Patrick; Sandvol, Eric; 

Yuan, Xiaohui: maGmatic and SEiSmic EvidEncE For 

dELamination oF continEntaL LithoSPhEric 

undEr thE cErro GaLan iGnimBritE cEntEr in thE 

SouthErn Puna oF thE cEntraL andES 

32-6 16:10 Russell, Kathleen M.*; Carley, Tamara L.; Miller, Calvin F.; 

Wooden, Joseph; Schmitt, Axel K.; Economos, Rita; Fisher, 

Christopher M.; Hanchar, John M.: KraFLa Zircon: 

inSiGhtS into GEnEration oF SiLicic maGma at 

an icELandic cEntraL voLcano 


T14. Ground Deformation Related to Anthropogenic Activities: 

Achievements in the Development of Geoscience Information 

System for Improved Management of Natural Resources 


Dora Carreon-Freyre, Mariano Cerca, Devin L. Galloway, and Penélope 

López-Quiroz, Presiding 

33-1 14:30 Cerca, Mariano*; Carreon-Freyre, Dora; López-Quiroz, 

Penélope; Ovando-Shelley, Efraín; Doin, Marie-Pierre; 

Gutierrez-Calderon, Raul; González-Hernández, Marcos; 

Jimenez-Sánchez, Alejandra; Blancas-Dominguez, Daniel: 

EnGinEErinG GEoLoGy aPProach to thE EFFEctS 

oF Land SuBSidEncE in mEXico city 

33-2 14:50 López-Quiroz, Penélope; Carrera-Hernández, Jaime J.*: 

FactorS aFFEctinG Land SuBSidEncE cauSEd By 

GroundWatEr EXtraction in thE BaSin oF mEXico 

33-3 15:10 Ochoa-González, Gil H.*; Teatini, Pietro; Carreon-Freyre, Dora: 

conStruction oF a numEricaL modEL to aSSESS

Land SuBSidEncE rELatEd to GroundWatEr 

WithdraWaL in thE vaLLEy oF QuErEtaro 

33-4 15:30 Colvin, David C.*: onE dimEnSionaL modFLoW 

modELinG oF Land SuBSidEncE duE to FLuid 

WithdraWaL 

33-5 15:50 López-Quiroz, Penélope*; Doin, Marie-Pierre: EiGht yEarS 

oF mEXico city SuBSidEncE mEaSurEmEntS 

throuGh inSar 

33-6 16:10 Carreon-Freyre, Dora*; Barrientos-García, Bernardino; 

Gutierrez-Calderon, Raul; Mares-Castro, Carlos; Cerca, 

Mariano: inStrumEntation SyStEm For in Situ 

monitorinG oF Ground dEFormation in 

iZtaPaLaPa, mEXico city 

Saturday, 31 march 2012 

morninG oraL 



T2. Ore Deposits and Ore Genesis in the American Cordillera 


Antoni Camprubi, Presiding 

34-1 08:30 Espinosa, Enrique G. Sr.*: GEoLoGicaL maPPinG: a 

vaLuaBLE tooL For minEraL EXPLoration in 

mEXico 

34-2 08:50 Vèlez, Julio Lòpez*: contriBution to thE 

aEromaGnEtic intErPrEtation mininG 

EXPLoration 

34-3 09:10 Aguirre-Díaz, Gerardo J.*; Tristán-González, Margarito; 

González-Partida, Eduardo; Labarthe-Hernández, Guillermo; 

Marti, Joan; Nieto-Obregón, Jorge: GraBEn tyPE 

caLdEraS oF thE SiErra madrE occidEntaL: 

PotEntiaL SitES For hydrothErmaL orE dEPoSitS 

34-4 09:30 Rojas-Pardo, Andrea*; Campos, Eduardo; Díaz Viera, Martín; 

Vega, David; Bembow, María Soledad: a mEthodoLoGicaL 

ProPoSaL For modELinG coPPEr Wad diStriBution 

in thE LomaS BayaS orE dEPoSit, northErn chiLE 

34-5 09:50 Vasquez-Mendoza, Rigoberto*; Moreno-Lopez, 

Miguel Humberto; Cendejas-Cruz, Francisco: GEoLoGicaL 

mininG PotEntiaL oF yEcorato ProJEct, choiX, 

SinaLoa 

34-6 10:10 González-Jiménez, José María*; Camprubí, Antoni; Griffin, 

William L.; Centeno-García, Elena; O’Reilly, Suzanne Y.; 

Martini, Michelangelo; Proenza, Joaquín A.; Pearson, 

Norman J.: a mESoZoic BacK-arc in thE GuErrEro 

comPoSitE tErranE (mEXico): EvidEncE From 

tracE ELEmEntS and rE-oS iSotoPES in PodiForm 

chromititES From Loma Baya 

10:30 Break 

34-7 10:50 Kyle, J. Richard*: SiErra moJada aG-PB-Zn diStrict, 

coahuiLa: EvoLution oF an EndmEmBEr 

PoLymEtaLLic carBonatE rEPLacEmEnt 

minEraLiZation SyStEm? 

34-8 11:10 Camprubí, Antoni*; Martini, Michelangelo; González-Jiménez, 

José María; González-Partida, Eduardo; Proenza, Joaquín A.; 

Centeno-García, Elena; Fitz-Díaz, Elisa; Valencia-Moreno, 

Martín; Izaguirre, Aldo; Iriondo, Alexander: mEtaLLoGEnic 

and tEctonomaGmatic EvoLution oF mEXico 

durinG thE mESoZoic: a rEviEW and nEW inSiGhtS 


34-9 11:30 Camprubí, Antoni*: mEtaLLoGEnic EvoLution oF 

mEXico durinG thE mESoZoic: a comPariSon With 

thE rESt oF thE cordiLLEra oF WEStErn north 

amErica and thE andES 


T5. Mechanisms of Arc Magma Generation along the Cordillera 


Laura Mori, Peter Schaaf, and Arturo Gómez-Tuena, Presiding 

35-1 08:30 Straub, Susanne M.*; Gómez-Tuena, Arturo; Zellmer, Georg F.: 

ni-co SyStEmaticS oF hiGh-ni oLivinES in thE 

cEntraL mEXican voLcanic BELt: conStraintS 

For PyroXEnitE Formation in thE mantLE WEdGE 

35-2 08:50 Martínez-Serrano, Raymundo G.*; García-Tovar, Gloria P.; 

Núñez-Castillo, Elizabeth Y.; Correa-Tello, Juan Carlos; 

Solís-Pichardo, Gabriela: maGmatic EvoLution in thE 

aPan-tLÁLoc rEGion, EaStErn SEctor oF thE 

tranS-mEXican voLcanic BELt: Sr, nd and PB 

iSotoPic and GEochEmicaL EvidEncES 

35-3 09:10 Gómez-Tuena, Arturo*; Vázquez-Duarte, Alma; Díaz-Bravo, 

Beatriz; Pérez-Arvizu, Ofelia; Mori, Laura: andESitic 

voLcaniSm in WEStErn mEXico By mELtinG oF 

amPhiBoLitic mantLE WEdGE PLumES 

35-4 09:30 Schaaf, Peter*: idEntiFyinG SuBduction comPonEntS 

in thE tranS mEXican voLcanic BELt: a comPLEX 

maGmatic arc in a comPLEX SuBduction ZonE 

rEGimE 

35-5 09:50 Mori, Laura*; Agostini, Samuele; Ramos-Arias, Mario; 

Gómez-Tuena, Arturo: GEochEmicaL rEcycLinG and 

maGma GEnEration in thE EaStErn tranS-mEXican 

voLcanic BELt: thE caSE Study oF thE SErdÁnoriEntaL 

BaSin 

35-6 10:10 Delgado-Argote, Luis Alberto*; Avilez-Serrano, Porfirio; 

Torres-Carrillo, Xochitl G.; Peña-Alonso, Tomás; Weber, Bodo: 

PEtroLoGic FEaturES and tEctonic contEXt oF 

diScrEtE PLutonS in thE SouthWEStErn marGin 

oF thE PEninSuLar ranGES BathoLith, mEXico 

10:30 Break 

35-7 10:50 Stern, Charles R.*: KEynotE: thE roLE oF SuBduction 

EroSion in ProducinG tEmPoraL and SPatiaL 

variationS in andEan maGma chEmiStry 

35-8 11:20 Chapman, Alan D.*; Ducea, Mihai N.: LithoSPhEric 

raindroPS BEnEath thE PEruvian aLtiPLano: 

EvidEncE From BacK arc PotaSSic maFic 

voLcanic rocKS 

35-9 11:40 Farmer, G. Lang*; Glazner, Allen F.; Kortemeier, Winifred T.; 

Schweickert, Richard A.; Moore, Jessica: mantLE 

LithoSPhErE aS SinK and SourcE oF continEntaL 

arc and PoSt-arc maGmatiSm 

35-10 12:00 Claiborne, Lily L.*; Wooden, Joseph L.; Miller, Calvin F.; Gualda, 

Guilherme A.R.; Clynne, Michael A.; Flanagan, Daniel M.: 

undErStandinG thE mount St. hELEnS maGmatic 

SyStEm uSinG Zircon SurFacE GEochronoLoGy 

and GEochEmiStry, 3d X-ray tomoGraPhy, and 

GLaSS comPoSitionS 

35-11 12:20 Barnes, Calvin G.*; Frost, Carol D.; Nordgulen, Oystein; 

Prestvik, Tore: maGma miXinG and GarnEt Formation 

in thE middLE cruSt aS an anaLoG For dEEPcruStaL 

maGma miXinG in continEntaL arcS 

12:40 10 minutes discussion at the end of the second block of 

oral talks 





Variations: What Caused the Cretaceous-Paleogene Shortening 

across the Mexican Cordillera? 


Michelangelo Martini, Mariano Cerca, Martin Valencia, Elisa Fitz, Gabriel Chávez, 

and Timothy F. Lawton, Presiding 


36-1 08:40 Cruz, Leonardo*; Fitz-Díaz, Elisa; Hudleston, Peter: KEynotE: 

numEricaL modELinG oF thE mEXican FoLd-andthruSt 

BELt 

36-2 09:10 Tolson, Gustavo*; Fitz-Díaz, Elisa; Hudleston, Peter; 

Chávez-Cabello, Gabriel: KEy iSSuES oF thE mEXican 

FoLd and thruSt BELt Which muSt BE addrESSEd 

By ProPoSEd mEchaniSmS oF crEtacEouS- 

PaLEoGEnE ShortEninG 

36-3 09:30 Valencia-Moreno, Martín*; Chávez-Cabello, Gabriel; 

Cerca-Martínez, Mariano; Ferrari, Luca: SynchronouS 

WaninG oF LaramidE ShortEninG and initiation oF 

cEnoZoic EXtEnSion in northWEStErn mEXico: a 

StiLL unSoLvEd iSSuE 

36-4 09:50 Xu, Shunshan Sr.*; Nieto-Samaniego, A.F.; Loza-Aguirre, I. Sr.: 

mEchaniSmS oF thE FauLtS aSSociatEd With thE 

LaramidE FoLdS in thE mESa cEntraL, mEXico 

36-5 10:10 Fitz-Diaz, Elisa*; Hudleston, Peter; Solé-Viñas, Jesús; Pi-Puig, 

Teresa; van der Pluijm, Ben A.: datinG oF FoLdS in thE 

mEXican FoLd-thruSt BELt, cEntraL mEXico 

10:30 Break 


36-6 10:50 Lawton, Timothy F.*: aGE oF thE caracoL Formation, 

SiErra dE ParraS, coahuiLa, mEXico 

36-7 11:10 González-León, Carlos M.*; Lawton, Timothy F.; Solari, Luigi: 

crEtacEouS tEctonicS in Sonora: conStraininG 

timE oF thE ShortEninG EvEntS 

36-8 11:30 Rodríguez-Castañeda, José Luis*; Roldán-Quintana, Jaime: 

ProvEnancE anaLySiS From dEtritaL ZirconS in 

uPPEr crEtacEouS SandStonES in thE arivEchi 

rEGion, EaStErn Sonora, mEXico 

36-9 11:50 Martini, Michelangelo*: thE GuErrEro tErranE SuturE 

BELt at GuanaJuato and itS rELation With thE 

mEXican FoLd-thruSt BELt 

36-10 12:10 Centeno-García, Elena*: rEconStructinG rEGionaL 

dEFormationaL EvEntS in thE ZihuatanEJo 

tErranE From StratiGraPhy and Zircon 

GEocronoLoGy 

36-11 12:30 Keppie, D. Fraser*: thE PiratE modEL For dErivation 

oF thE chortiS and chiaPaS BLocKS From 

thE WEStErn GuLF oF mEXico in thE LatESt 

crEtacEouS-cEnoZoic: imPLicationS For thE 

SiErra madrE oriEntaL and ZonGoLica FoLdBELtS 

12:50 concluding remarks

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