USGS Professional Paper 1697 - Alaska Resources Library

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Table 3—Continued Metallogenic Belt (Abbreviation) Verkhoyansk- Indigirka (Dulgalak) zone (EAVI), Eastern Asia-Arctic Metallogenic Belt Anuyi-Beringovsky zone (EAAB), Eastern Asia-Arctic Metallogenic Belt Chukotka zone (EACH), Eastern Asia-Arctic Metallogenic Belt Seward Peninsula (SP) Northwestern Koyukuk Basin (NWK) West-Central Alaska (WCA) (Hogatza) Kuskokwim Mountains (KMT) (Kuskokwim mineral belt) East-Central Alaska, (younger part) (ECA) (Includes Carmacks belt of porphyry Cu- Mo deposits) Major Mineral Deposits Types. (Signifi cant Mineral Deposits) Clastic sediment-hosted Hg, Sb-Au vein. (Zagadka, Kyuchyus) Au-Ag epithermal vein, disseminated Au sulfi de) (Valunistoe, Maiskoe)) Sediment-hosted Hg, hot-spring Hg, volcanic-hosted Hg. (Palyanskoe, Plamennoe) Sn skarn & greisen, Sn granite, porphyry Mo, polymetallic vein, & others. (Lost River, Eagle Creek, Death Valley) Felsic plutonic U. (Wheeler Creek, Clear Creek, Zane Hills) Porphyry Cu. (Indian Mountain, Purcell Mountain, Zane Hills) Manto-replacement deposit (polymetallic Pn- Zn, Au) (Illinois Creek) Environment and Host Unit Continental-margin arc. Back arc part of Okhotsk- Chukotka volcanic-plutonic belt. Continental-margin arc. Okhotsk-Chukotka volcanicplutonic belt. Continental-margin arc. Okhotsk-Chukotka volcanicplutonic belt. Continental-margin arc. western Alaska part of Okhotsk- Chukotka volcanic-plutonic belt. Continental-margin arc. western Alaska part of Okhotsk- Chukotka volcanic-plutonic belt. Continental-margin arc. western Alaska part of Okhotsk- Chukotka volcanic-plutonic belt. Tectonic Event and Comments Subduction-related magmatism associated with back-arc part of Okhotsk- Chukotka continental margin arc. Zone part of Eastern Asia metallogenic belt. Subduction-related granitic plutonism that formed the Okhotsk-Chukotka continental-margin arc. Zone part of Eastern Asia metallogenic belt. Subduction-related granitic plutonism that formed the back-arc part of Okhotsk-Chukotka continental-margin arc. Youngest zone in Eastern Asia metallogenic belt. Subduction-related granitic plutonism that formed the back-arc part of Okhotsk-Chukotka continental-margin arc. Eastern extension of Eastern Asia metallogenic belt. Subduction-related granitic plutonism that formed the back-arc part of Okhotsk-Chukotka continental-margin arc. Eastern extension of Eastern Asia metallogenic belt. Subduction-related granitic plutonism that formed the Okhotsk-Chukotka continental-margin arc. Eastern extension of Eastern Asia metallogenic belt. Metallogenic Belts Formed in Late Mesozoic and Early Cenozoic Kluane Continental-Margin Arc, Southern Alaska Sn-Cu-Ag greisen, Hg-Sb-Au epithermal vein, Au-As polymetallic vein, porphyry Mo, porphyry Cu-Au, porphyry Au, granitoid-related Au. (McLeod, Fox Hills, Chicken Mountain, Beaver Mountains, Cirque, Tolstoi,Von Frank Mountain, Donlin Creek, Vinasale, Arnold) Sn greisen and vein, tourmaline-topazquartz-sulfi de greisen, felsic plutonic U, W skarn, porphyry Cu-Mo. (Asarco, Casino Ketchem Dome, Lime Peak, Road Metal, Roy Creek, Taurus) Continental-margin arc. Kuskokwim Mountains sedimentary and volcanic belt. Continental-margin arc. Yukon-Tanana igneous belt. Subduction-related granitic plutonism that formed the Kluane continentalmargin arc. Subduction-related granitic plutonism that formed the Kluane continentalmargin arc. 362 Metallogenesis and Tectonics of the Russian Far East, Alaska, and the Canadian Cordillera
Table 3—Continued Metallogenic Belt Major Mineral Deposits Types. Environment and Tectonic Event and (Abbreviation) (Signifi cant Mineral Deposits) Host Unit Comments Southern Alaska (SA) Porphyry Cu, porphyry Cu-Au, Continental-margin arc. Subduction-related granitic plutonism that formed the Kluane continental- polymetallic vein, Ag-Au skarn, Cu- Alaska Range-Talkeetna margin arc. Au-Ag skarn. (Kijik River, Golden Zone, Nabesna River). Mountains igneous belt. Metallogenic Belts Formed During Early Tertiary Spreading Along Kula-Farallon Oceanic Ridge, Southern and Southeastern Alaska Prince William Sound Besshi massive sulfi de, Cyprus massive Oceanic ridge. Sea-fl oor spreading along Kula-Farallon oceanic ridge. (PW) sulfi de. (Beatson (Latouche), Copper Bullion (Rua Cove), Ellamar, Fidalgo-Alaska) Prince William terrane. Yakobi (YK) Gabbroic Ni-Cu Oceanic ridge. Intrusion of mafi c-ultramafi c plutons during oblique subduction of Kula- (Bohemia Basin, Brady Glacier, Mirror Mafi c-ultramafi c plutons Farallon oceanic ridge under margin of southeastern Alaska. Harbour, Mt. Fairweather) intruding Chugach terrane. Metallogenic Belts Formed During Early Tertiary Oblique Subduction of Kula-Farallon Oceanic Ridge Under Margin of Southern and Southeastern Alaska Maclaren (MC) Au quartz vein. Extensional. Oblique subduction of Kula-Farallon oceanic ridge under margin of (Lucky Hill and Timberline Creek) Veins in low-grade part of Maclaren Glacier metamorphic belt. southern Alaska. Talkeetna Mountains Au quartz vein Extensional. Oblique subduction of Kula-Farallon oceanic ridge under margin of (TM) (Independence) Veins in low-grade part of Talkeetna Formation.. southern Alaska. Chugach Mountains Au quartz vein. Extensional. Oblique subduction of Kula-Farallon oceanic ridge under margin of (CM) (Cliff, Alaska Oracle, Crown Point, & Veins in Valdez Group, Chugach southern Alaska. others) terrane. Baranof (BN) Au quartz vein. Extensional. Oblique subduction of Kula-Farallon oceanic ridge under margin of (Chichagoff, Hirst-Chichagof, Bauer, Veins in Valdez Group, Chugach southeastern Alaska. Silver Bay, and others) terrane. Juneau (JU) Au quartz vein. Extensional. Oblique subduction of Kula-Farallon oceanic ridge under margin of (Jualin, Kensington, Alaska-Juneau, Veins in foliated tonalite sill southeastern Alaska. Treadwell, Sundum Chief, Gold between Wrangellia and Standard, & others) Stikinia terranes. Metallogenic Belts Formed in Late Cretaceous and Early Tertiary Coast Continental-Margin Arc, Southeastern Alaska, and Southern Canadian Cordillera Surprise Lake (SL) Porphyry Mo-Cu, Au-Ag polymetallic Continental-margin arc. Subduction-related granitic plutonism that formed the Coast continental- vein. Coast-North Cascade plutonic margin arc. (Mount Ogden, Red Mountain, Adanac- Adera, Boswell River, & others) belt. Central-southeastern Porphyry Mo, porphyry Cu. Continental-margin arc. Subduction-related granitic plutonism that formed the Coast continental- Alaska (CSE) (Margerie Glacier, Nunatak, Groundhog Coast-North Cascade plutonic margin arc. Basin, Quartz Hill) belt. Appendix 363
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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
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Cecile, M.P., 1982, The lower Paleo
Page 327 and 328:
Debari, S.M., and Coleman, R.G., 19
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U.S. Bureau of Land Management Open
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Cordilleran Orogen in Canada: Geolo
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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 and 376: Table 2—Continued Unit(s) and Cor
Page 377 and 378: Table 2—Continued Unit(s) and Cor
Page 379 and 380: Table 3—Continued Metallogenic Be
Page 393: 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
Page 427 and 428: Table 4—Continued Sredinny Metall
Page 429: Table 4—Continued Deposit Name Mi
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