USGS Professional Paper 1697 - Alaska Resources Library

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Table 3—Continued EARLY CRETACEOUS METALLOGENIC BELTS (Neocomian—144 to 120 Ma) (fi gs. 11, 12) Metallogenic Belts Formed Along Late Mesozoic Continental-Margin Transform Faults in Russian Southeast Metallogenic Belt Major Mineral Deposits Types. Environment and Tectonic Event and (Abbreviation) (Signifi cant Mineral Deposits) Host Unit Comments Samarka (SA) W skarn, porphyry Cu-Mo. Transform continental-margin. Anatectic granitic plutonism occurring during subduction of Kula oceanic (Vostok-2, Benevskoe, Khvoshchovoe, Samarka accretionary-wedge ridge along the transform continental margin of the Russian Southeast. Kafen, Malakhitovoe) terrane. Belt continued into late Early Cretaceous. Algama (AL) Stratiform Zr. Transform-margin. Intrusion of alkali igneous rock associated with mafi c-ultramafi c plutons (Algaminskoe) Alkalic igneous rock intruding that intruded along major continental-margin transform faults during Stanovoy block of North Asian Craton. subduction of terranes along Mongol-Okhotsk fault system. Kondyor (KO) Zoned mafi c-ultramafi c Cr-PGE. Transform-margin. Intrusion of mafi c-ultramafi c plutons along major continental-margin (Kondyor) Zoned mafi c-ultramafi c transform faults during subduction of terranes along Mongol-Okhotsk intrusions intruding Stanovoy block of North Asian Craton. fault system. Metallogenic Belts Formed During Late Mesozoic Closure of Mongol-Okhotsk Ocean in Russian Southeast Selemdzha-Kerbi Au quartz vein and granitoid-related Au. Collisional. Anatectic granitic plutonism associated with collision Bureya and Khanka (SK) (Tokur, Petrovsko-Eleninsky) Veins and plutons intruding continental-margin arc superterranes with the North Asian Craton and Tukuringra-Dzhagi and Galan terranes. closure of the Mongol-Okhotsk Ocean. Belt extended into Late Jurassic. Stanovoy (ST) Granitioid-related Au, Au-Ag epithermal Transform-margin. Anatectic granitic plutonism and regional metamorphism associated with vein, Au quartz vein. Zoned mafi c-ultramafi c accretion of Bureya superterrane to North Asian Craton and closing of (Kirovskoe) intrusions intruding Stanovoy block of North Asian Craton.. Mongol-Okhotsk Ocean. Belt extended into Early Cretaceous. Metallogenic Belts Formed During Late Mesozoic Accretion of Kolyma-Omolon Superterrane in Russian Northeast Kular (KU) Au quartz vein, granitoid-related Au, Sn Collisional. Anatectic granitic plutonism and regional metamorphism associated with quartz vein. Veins and plutons in Northern accretion of Kolyma-Omolon superterrane to North Asian Craton Margin. (Burguat, Solur, Novoe) part, Verkhoyansk granite belt. Belt continued into late Early Cretaceous (Albian). Allakh-Yun (AY) Au quartz vein, granitoid-related Au, W- Collisional. Regional metamorphism and anatectic granitic plutonism associated with Sn quartz vein. Verkhoyansk granite belt. accretion of Kolyma-Omolon superterrane to North Asian Craton Margin. (Bular, Yur, Nezhdanin, Levo-Dybin) Belt continued into Early Cretaceous. Yana-Polousnen (YP) Granitoid-related Au, Sn quartz vein, & others. Collisional. Anatectic granitic plutonism and regional metamorphism associated with (Polyarnoe, Deputatskoe, Kandidatskoe, Plutons and veins in Northern late stage of accretion of Kolyma-Omolon superterrane to North Asian Chistoe, Ilin-Tas) part, Verkhoyansk granite belt. Craton Margin. Belt continued into early Late Cretaceous. Darpir (DP) Sn skarn, Sn greisen, granitoid-related Collisional. Anatectic granitic plutonism associated with accretion of Kolyma-Omolon Au, porphyry Cu. Main part, Verkhoyansk granite superterrane to North Asian Craton Margin. (Titovskoe, Chepak, Bastion) belt. Tompon (TO) Cu, W, Sn skarn, Sn quartz vein. Collisional. Anatectic granitic plutonism associated with accretion of Kolyma-Omolon (Khunkhada, Agylki, Erikag) Skarns and veins adjacent to Main part, Verkhoyansk granite belt. superterrane to North Asian Craton Margin. Shamanikha (SH) Au quartz vein, Cu-Ag quartz vein. Collisional. Regional metamorphism associated with accretion of Kolyma-Omolon (Glukhariny, Opyt) Veins in Prikolyma terrane. superterrane to North Asian Craton Margin. 356 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 Verkhoyansk (VK) Au quartz vein, Au-Sn polymetallic vein. Collisional. Regional metamorphism and anatectic granitic plutonism associated with (Nikolaevskoe, Otkyrtoe, Chochimbal, Skarns and veins adjacent to accretion of Kolyma-Omolon superterrane to North Asian Craton Margin. Imtandzha) Main part, Verkhoyansk granite belt. Belt continued into Early Cretaceous. Yana-Kolyma (YA) Au quartz vein, Sn vein, granitoid-related Collisional. Regional metamorphism and anatectic granitic plutonism associated with Au. Veins and plutons in or adjacent early stage of accretion of Kolyma-Omolon superterrane to North Asian (Natalka, Svetloe, Kholodnoe, Zhdannoe, to Main part, Verkhoyansk Craton Margin. Utin, Alyaskitovoe,) granite belt. Metallogenic Belts Formed During Late Mesozoic Island Arcs, Russian Northeast, Southeastern Alaska, and Southern Canadian Cordillera Left Omolon (LO) Porphyry Mo-Cu, Mo-Cu skarn. Island arc. Subduction-related granitic plutonism that formed the Oloy arc island arc. (Bebekan, Medgora) Oloy-Svyatoy Nos volcanic belt. Western-southeastern Porphyry Mo, Cu-Ag skarn, felsic Island arc. Subduction-related granitic plutonism that formed the Gravina arc. Alaska (WSE) plutonic U. Granitic rocks intruding Metallogenic belt and host granitic suite formed during fi nal accretion of (Baker Island, Jumba, Magnetite Cliff, Gravina-Nutzotin-Gambier Wrangellia superterrane. Bokan Mountain) belt, Wrangellia sequence, Wrangellia superterrane. Britannia Kuroko massive sulfi de Island arc. Subduction-related granitic plutonism that formed the Gravina island arc on (Britannia, Maggie, Northair, Nifty) Gravina-Nutzotin-Gambier belt, Wrangellia sequence, Wrangellia superterrane. the Wrangellia superterrane. Oloy (OL) Continuing Metallogenic Belts Belt started in Late Jurassic. Mainits (MA) Belt started in Late Jurassic. Tamvatney-Mainits (TAM) Belt started in Late Jurassic. Cariboo (CB) Belt started in Middle Jurassic. LATE EARLY CRETACEOUS METALLOGENIC BELTS (Cenomanian through Albian—119 to 100 Ma) (fi gs. 11, 12) Metallogenic Belt Formed in Late Mesozoic Continental-Margin Arc, Russian Southeast Badzhal-Ezop- Sn greisen, skarn, and vein. Continental-margin arc. Subduction-related granitic plutonism that formed the Khingan continental- Khingan (BZ-KH) (Solnechnoe, Prvourmiiskoe, Ezop, Khingan-Okhotsk volcanicmargin arc. Belt extended into Early Cretaceous. Khingan) plutonic belt. Metallogenic Belts Formed in Late Mesozoic Collision and Accretion of Island Arcs, and Transform Continetnal-Margin Faulting, Russian Northwest, Western and Northern Alaska, and Northern Canadian Cordillera Anadyr River (AD) Au quartz vein. Collison or Extensional. Regional metamorphism and generation of hydrothermal fl uids associated (Vaegi, Nutekin) Veins in Mainitskiy, West with accretion and collision of Mainitskiy island arc onto North Asian Pekulney, or Penzhina-Anadyr terranes. Craton margin. Nome (NO) Au quartz vein. Extensional. Regional metamorphism associated with extension that occurred after (Rock Creek, Big Hurrah, Mt. Distan) Veins in Seward terrane. overthrusting of Angayucham subduction zone terrane. Appendix 357
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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
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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.,
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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 387: 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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