FTELD TRIP ACROSS THE APPALACHTAN OROGENIC BELT

More documents

Recommendations

Info

lcelen-'"eratq Anthozoa . Tabulata Aulopora 'ihro po€ Trllo bltonorpha ;echenella :lg1chio poda Artlculata Chone te s :olepto strophla ffi ,'ro tcechla SP. Trachypora ihacops Greenops Canero to echla s.p. Mucro splrlfer Douvlll-lna 64 Devonian i'ea.-: r':l-1 .r\:,ic..i,i. t:1. F,er.ail ton Forna [1or: Deer Lake Schuylkill Counti', ien:tsylvania Deer Lake p,. e i.iite @Rhipldonella EI;'tha Tylo thyrls A.nbocoella Trotr1.loI et',trrs l'hacops ( Cephalon ) Btyozoa Gynnolae;lata Jchlnodernata Crino idea Colunnal s (enlarged ) Taenlopora Sulcoretopora Fenestelle i'!ol_lttsca Avlculopecten Llop teria Cyprlcardina Ce phalc po da i'a'1eonei1o i!rcirelinoceras 0rlgina1 she1l naterlal has been dissolved aley, leavlrrg nolds and casts Age of the rock: about J20 nlIlior years. Ref erence: f'o ssil qclltq_!_iIA f n -: arrr. =r,'l -,....^ i.---Tifi"-i:i.'....jTTnFl -
18 as representing shallow, gently agitated, relatively nearshore, open-marine shelf deposition. The Mahantango probably represents a cratonic tectonic setting, but that setting was soon to turn to an orogenic, foreland basin setting in late Middle Devonian tirne. The Mahantango comprises the uppermost unit in the Hamilton Group, a series of dark, generarly fine-grained, marine Middle Devonian rocks. The Hamilton rocks are dark because of their hiqh content of finely divided organic matter. They overlie earlier cratonicsetting, carbonate strata of Upper Silurian and Lower Devonian dge, and represent the last shelf-association deposits before the influx of large amounts of terrigenous clastic sedirnent frorn the second great Appalachian orogenic event, the Acadian orogeny of Late Devonian tirne
Page 1 and 2: GEOIOGY 106 FTELD TRIP ACROSS THE A
Page 3: REGTONAL GEOLOGTC SETT TNG The next
Page 7 and 8: . Varlicot atlta (hrtlcol .rogsroho
Page 9 and 10: C*;:;il 't {r ( i:$-*
Page 11 and 12: i'.iii :iii.'i:j l3 lz ll lo 1 ?_-J
Page 13 and 14: STOP 1: h,INDY HILLS BRIDGE Stop L,
Page 15 and 16: There were at these rocks. 5 least
Page 17 and 18: STOP 3: G()LD 7 , N GREEN CIUARRY,
Page 19 and 20: STOP 4: 9 THE BIKE STORE', MOHNTON
Page 21 and 22: 11 STOP 5: STONE CLIFF PARK, READ I
Page 23 and 24: 1_3 Work out a sequence of eyents i
Page 25 and 26: 15 Note the regularity of the beddi
Page 27: 17 sToP 7 - DEER LAKE This is an ab
Page 31 and 32: sroP 70: 20 LAVELLE I I This exposu
Page 33 and 34: 22 STOP 77: LAVELLE TTT . This is a
Page 35 and 36: t l+{ o OJ 0) .o r0 E F (n F.l fr U
Page 37 and 38: sToP 73: DTNNER STOP 25 BEAR VALLEY
Page 39 and 40: surface of the rocks just below the
Page 41: Pecopter:is sp. Annu,a.ria sp. lieu

FTELD TRIP ACROSS THE APPALACHTAN OROGENIC BELT

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?