USGS Professional Paper 1697 - Alaska Resources Library

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344 Metallogenesis and Tectonics of the Russian Far East, Alaska, and the Canadian Cordillera Table 2—Continued Unit(s) and Correlations. Age Peninsular sequence of Wrangellia supterterrane (Talkeetna Formation) in Alaska; Bonanza Formation and Cadwallader island arc and Methow turbidite-basin terranes in Canadian Cordillera. Late Triassic and Early Jurassic. Chugach (older part, blueschist and McHugh Complex), Bridge River, and Baker terranes. Paleozoic, Triassic, and Early Jurassic. Stikinia and Quesnellia terranes. Permian to Early Jurassic. Cache Creek, Slide Mountain, and Seventymile terranes. Paleozoic and Mesozoic. Tectonic Environment(s) Tectonic Linkages. Comments Talkeetna-Bonanza Island Arc Island arc Axial part of arc. Accretionary wedge and subduction zone Stikinia-Quesnellia Island Arc Island arc Axial part of arc. Subduction zone and accretionary wedge Linked to Talkeetna and Bonanza arcs. Remnants of subduction of Cache Creek and Farallon oceanic plates. Linked to Stikinia-Quesnellia arc. Remnants of subduction of Cache Creek oceanic plate. MAINLY LATE CRETACEOUS AND EARLY CENOZOIC CONTINENTAL-MARGIN ARCS, ISLAND ARCS, AND LINKED SUBDUCTION ZONES East Sikhote-Alin Continental-Margin Arc (Late Cretaceous) East Sikhote-Alin volcanic-plutonic belt, Sorachi-Yezo, West Sakhalin terrane. Cretaceous and early Tertiary. Igneous overlap assemblage Axial part of arc. Hidaka accretionary-wedge, younger part of the Aniva, Nabilsky, and Tokoro terranes. Permian to Cretaceous. Okhotsk-Chukotka volcanic-plutonic belt and Penzhina sedimentary basin. Cretaceous and early Tertiary. West-Kamchatka, Ekonay, and Yanranay terranes. Upper Paleozoic, Jurassic and Early Cretaceous. Olyutorka-Kamchatka, Iruneiskiy, Kronotskiy, Shmidt, Terpeniya, and Nemuro terranes. Late Cretaceous and Early Tertiary. Vetlovskiy terrane. Late Cretaceous and early Tertiary. Accretionary wedge and subduction zone Okhotsk-Chukotka Continental-Margin Arc Igneous overlap assemblage Axial part of arc. Linked to East Sikhote-Alin arc. Remnants of subduction of Ancestral Pacifi c oceanic plate. Accretionary wedge Linked to Okhotsk-Chukotka arc. Remnants of subduction of Ancestral Pacifi c oceanic plate. Olyutorka Island Arc Island arc Axial part of arc. Accretionary wedge Linked to Olyutorka arc. Remnants of subduction of Ancestral Pacifi c oceanic plate. Kluane and Coast North Cascade Continental-Margin Arcs Kuskokwim Mountains sedimentary, volcanic, and plutonic belt, Alaska Range-Talkeetna Mountains volcanic-plutonic belt, Coast- North Cascade plutonic belt, and Kamloops magmatic belt. Late Cretaceous and early Tertiary. Igneous overlap assemblage Axial part of arc. Chugach terrane (the Late Cretaceous Valdez Accretionary wedge and Linked to Kluane and Coast North Cascade arcs. Group), older part of the Prince William ter- subduction zone Remnants of subduction of ancestral Pacifi c rane, and Pacific Rim terrane. Late Cretaceous and early Tertiary. oceanic plate.
Table 2—Continued Unit(s) and Correlations. Tectonic Environment(s) Tectonic Linkages. Comments Age MIDDLE AND LATE CENOZOIC CONTINENTAL-MARGIN ARCS AND LINKED SUBDUCTION ZONES Northeast Asia Continental-Margin Arc East Japan volcanic-plutonic belt, Central Kamchatka volcanic belt, Central Kamchatka volcanic and sedimentary basin, East Kamchatka volcanic belt, Eastern Sakhalin sedimentary basin, and the West Kamchatka sedimentary basin. Early Eocene to Miocene to present. Igneous overlap assemblages Axial part of arc. Kuril-Kamchatka terrane. Accretionary wedge and Linked to Northeast Asia arc. Remnant of Miocene to present. subduction zone subduction of Pacifi c oceanic plate. Sea of Japan unit, Sakhalin-Primorye volcanic belt, and Kuril unit. Oligocene to Miocene. Back-arc units Linked to Northeast Asia arc. Aleutian-Wrangell Continental-Margin Arc Aleutian volcanic belt, and Wrangell volcanic field. Early Eocene to Miocene to present. Igneous overlap assemblages Axial part of arc. Attu Island part of Prince William terrane and Yakutat terrane. Early Tertiary to present. Cascade volcanic-plutonic belt. Eocene to present. Siletzia, Olympic Core, and Hoh terranes and modern-day subduction zone. Eocene to present. Columbia River Basalt Group. Miocene. Accretionary wedge Linked to Aleutian-Wrangell arc. Remnants of subduction of ancestral Pacifi c oceanic plate. Cascade Continental-Margin Arc Igneous overlap assemblage Axial part of arc. Subduction zone and accretionary wedge Back-arc unit Linked to Cascade arc. Appendix 345 Linked to Cascade arc. Remnants of subduction of Juan de Fuca plate.
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USGS Prepared in collaboration with
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U.S. Department of the Interior Gal
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iv Hart River SEDEX Zn-Cu-Ag Deposi
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vi Specific Events for Middle Throu
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viii Metallogenic Belts Formed Duri
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x Origin of and Tectonic Controls f
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xii Toodoggone Metallogenic Belt of
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xiv Slate Creek Serpentinite-Hosted
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xvi Left Omolon Belt of Porphyry Mo
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xviii Origin of and Tectonic Contro
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xx Chukotka Metallogenic Belt of Au
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xxii Plutonic Rocks Hosting East-Ce
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xxiv Skeena Metallogenic Belt of Po
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xxvi Bee Creek Porphyry Cu Deposit
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xxviii 36. Wellgreen gabbroic Ni-Cu
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xxx 87. Partizanskoe Pb-Zn skarn de
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Metallogenesis and Tectonics of the
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format (Nokleberg and others, 1996)
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logenesis of the region (1) subduct
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Subterrane—A fault-bounded unit w
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dilemma consists of two conflicting
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2 to 20 m thick. A related dolomite
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Lantarsky-Dzhugdzhur Metallogenic B
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Origin of and Tectonic Controls for
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Metallogenic Belts Formed During Pr
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as at Oz, Monster, and Tart, may al
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Monashee Metallogenic Belt of Sedim
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Clark Range Metallogenic Belt of Se
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in addition to the Fe deposits. Min
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study) consists of lenses, from 100
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Omulev Austrian Alps W Deposit The
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ock, including coarse clastic rock,
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lative metalliferous brines in a re
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Prince of Wales Island Metallogenic
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suite of deposits and host rocks ar
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margin of the North American Craton
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newly created terranes migrated int
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(Ryazantzeva and Shurko, 1992). The
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tonnes Au and an average grade of a
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mafic and felsic metavolcanic rocks
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intrusion from about 402 to 366 Ma
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mentary rocks of the Cambrian to De
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(Preto and Schiarizza, 1985; Schiar
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ate and clastic rocks and volcanicl
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(Nokleberg and others, 1994c, 1997c
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Berezovka River Metallogenic Belt o
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Finlayson Lake Metallogenic Belt of
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and barite in siliceous black turbi
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Windermere Creek (Western Gypsum) C
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(NX, DL, MY), Viliga (VL), and Zolo
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South of the main east-west-trendin
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ated subduction zone in the Wrangel
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icite-biotite-quartz bodies in frac
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Canada Cordillera. The granitoid ro
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Viliga (VL) passive continental-mar
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32; tables 3, 4) occurs along the n
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superterrane, consists mainly of ma
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ers, 1994c, 1997c). In southern Bri
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mental volcanic rocks of intermedia
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a resource of 34.3 million tonnes o
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potassic zone. Combined estimated p
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and quartz monzodiorite stock and s
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and Omolon (OM) cratonal terranes,
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in volcanic and volcaniclastic rock
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minor calcite, and sporadic pyrite
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supergene blanket are interpreted a
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deposits and occurrences consist of
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onto the Omulevka terrane to form t
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superterrane. This belt is interpre
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to form along the leading edge of t
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quartz, and is virtually not associ
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deposits are at Terrassnoe and Kuna
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Peschanka Porphyry Cu-Mo Deposit Th
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The belt is hosted in the Late Jura
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in a island arc that was tectonical
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and Early Cretaceous Koyukuk island
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The deposit consists of disseminate
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The Orange Hill deposit contains an
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49; tables 3, 4) (Foley and others,
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locally Late Triassic marine volcan
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gold in a gangue of quartz, calcite
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Verkhoyansk granite belt, which int
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metallogenic belts are interpreted
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assemblages, which may have been mo
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during hypogene and supergene alter
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collision and regional thrusting, t
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Yur Au Quartz Vein Deposit The smal
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phase has a Rb-Sr isotopic age of 1
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sian Northeast. The belt is hosted
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Host Granitoid Rocks and Associated
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that are up to 600-1,500 m long, av
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Metallogenic Belts Formed During La
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y partly coeval plutons that range
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tion is interpreted as occuring by
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the Badzhal-Ezop and Khingan parts
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and comagmatic with volcanic rocks;
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as interpreted for the Rock Creek d
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source (Yeo, 1992). The Blow River
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2000). The spatial location of the
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to the east in the central Yukon Te
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occur in a 30-km-long belt along ir
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The Emerald deposit has produced ap
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Metallogenic-Tectonic Model for Ear
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cham oceans were closed, and the Ch
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greisenized Mesozoic granite that i
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composition magmatic bodies (with a
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to Albian pelecypods (Nokleberg and
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quartz-arsenopyrite-pyrrhotite, pol
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thermally altered to siliceous and
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These ore bodies are as much as 1 m
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Eastern Asia-Arctic Metallogenic Be
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Demin, and Krasilnikov, 1974; Nekra
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10 percent Cu, as much as 0.92 perc
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pyrite, pyrite, galena, sphalerite,
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content decreases with depth, as do
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azdelnoye, (2) porphyry Sn deposits
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Karalveem Au Quartz Vein Deposit Th
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Democrat (Mitchell Lode) Granitoid-
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with high-temperature and high-pres
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chalcocite and covellite and also h
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cum-North Pacific, (2) completion o
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(6) In the Paleocene (about 56 to 6
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sists of cinnabar and metacinnabari
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Eastern Asia-Arctic Metallogenic Be
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groups of deposits are interpreted
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Indian Mountain and Purcell Mountai
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and southeastern Alaska (Moll and P
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Nokleberg and others, 1995a; Bundtz
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g/t Au or 368.2 Au gold. The deposi
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wim Group and altered mafic dikes.
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Mount Nansen porphyry Cu-Mo deposit
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A Map 450 500 550 Cross section Dik
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Cretaceous and early Tertiary conti
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deposits, at Chichagoff and Hirst-C
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others, 1994c, 1997c). The signific
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tonnes grading 0.53 percent Ni, 0.3
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with a 0.25 percent cut-off. The de
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Bulkley Metallogenic Belt of Porphy
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Red Rose W-Au-Cu-Ag Polymetallic Ve
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ish Columbia and consists of severa
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during back-arc extension or transt
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stocks and dikes, is associated wit
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etrograde minnesotaite (Fe talc), F
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Specific Events for Early to Middle
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of fractured and faulted Permian-Tr
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sists of a mineralized fracture zon
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dolomite. Wall rock alteration incl
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elt of late Tertiary plutons that a
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plates that exhibit magnetic anomal
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stages (Petrenko, 1999): (1) In the
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mon. The deposit is of medium size
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Metallogenic-Tectonic Model for Lat
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The origin of the Hg deposits of th
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margin or island-arc tectonic envir
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Columbia: Implicatons for the Middl
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Bazard, D.R., Butler, R.F., Gehrels
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Bradley, D.C., Haeussler, P.J., and
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Bundtzen, T.K., Laird, G.M., Caluti
Page 325 and 326: Cecile, M.P., 1982, The lower Paleo
Page 327 and 328: Debari, S.M., and Coleman, R.G., 19
Page 329 and 330: U.S. Bureau of Land Management Open
Page 331 and 332: Cordilleran Orogen in Canada: Geolo
Page 333 and 334: Goldfarb, R., Hart, C., Miller, M.,
Page 335 and 336: Grove, E.W., 1986, Geology and mine
Page 337 and 338: Høy, T., 1982a, Stratigraphic and
Page 339 and 340: Jones, D.L., Silberling, N.J., Cone
Page 341 and 342: Kutyev, F. Sh., Baikov, A.I., Sidor
Page 343 and 344: Shield—Ultramafic magma and its m
Page 345 and 346: Manns, F.T., 1981, Stratigraphic as
Page 347 and 348: Miller, M.L., and Bundtzen, T.K., 1
Page 349 and 350: Mortimer, N., 1987, The Nicola Grou
Page 351 and 352: Noble, S.R., Spooner, E.T.C., and H
Page 353 and 354: Canada Annual Meeting, Saskatoon, S
Page 355 and 356: Perello, J.A., Fleming, J.A., O’K
Page 357 and 358: Far East—Mineralogical criteria f
Page 359 and 360: Roeske, S.M., Mattinson, J.M., and
Page 361 and 362: Schmidt, J.M., and Zierenberg, R.A.
Page 363 and 364: formation occurrences: Materialy po
Page 365 and 366: Struik, L.C., 1986, Imbricated terr
Page 367 and 368: Valuy, G., and Rostovsky, F., 1988,
Page 369 and 370: Wolfe, W.J., 1995, Exploration and
Page 371 and 372: Appendix Table 1. Mineral deposit m
Page 373 and 374: Table 2 Summary of correlations and
Page 375: Table 2—Continued Unit(s) and Cor
Page 379 and 380: Table 3—Continued Metallogenic Be
Page 399 and 400: Table 4. Significant lode deposits,
Page 401 and 402: Table 4—Continued Appendix 369 De
Page 403 and 404: Table 4—Continued Tracy Metalloge
Page 405 and 406: Table 4—Continued Appendix 373 In
Page 407 and 408: Table 4—Continued Deposit Name Mi
Page 409 and 410: Table 4—Continued Mainits Metallo
Page 415 and 416: Table 4—Continued Whitehorse Meta
Page 421 and 422: Table 4—Continued Appendix 389 LA
Page 425 and 426: Table 4—Continued Surprise Lake M
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Table 4—Continued Sredinny Metall
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Table 4—Continued Deposit Name Mi
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