Metallogenesis and Tectonics of the Russian Far East, Alaska, and ...
Metallogenesis and Tectonics of the Russian Far East, Alaska, and ...
Metallogenesis and Tectonics of the Russian Far East, Alaska, and ...
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~etallo~enic Belt Major Mineral Deposits Types. Environment. Tectonic Event.<br />
(Abbreviation) (Significant Mineral Deposits)<br />
Host Unit.<br />
Comments<br />
Seward Peninsula<br />
(sp)<br />
Sn skarn & greisen, Sn granite, porphyry<br />
Mo, polymetallic vein, & o<strong>the</strong>rs.<br />
(Lost River, Eagle Creek, Death Valley)<br />
Continental-margin arc.<br />
Western <strong>Alaska</strong> part <strong>of</strong><br />
Okhotsk-Chukotka volcanic-<br />
-- -<br />
- -<br />
Subduction-related granitic plutonism that formed <strong>the</strong> back-arc part <strong>of</strong> Okhotsk-<br />
Chukotka continental-margin arc. <strong>East</strong>ern extension <strong>of</strong> <strong>East</strong>crn Asia<br />
metallogenic belt.<br />
Northwestern<br />
Felsic plutonic U.<br />
plutonic belt.<br />
Continental-margin arc.<br />
Subduction-related granitic plutonism that formed <strong>the</strong> back-arc part <strong>of</strong> Okhotsk-<br />
Koyukuk Basin (Wheeler Creek, Clear Creek, Zane Hills) Western <strong>Alaska</strong> part <strong>of</strong><br />
Chukotka continental-margin arc. <strong>East</strong>ern extension <strong>of</strong> <strong>East</strong>ern Asia<br />
WWK)<br />
West-Central <strong>Alaska</strong> I Porphyry Cu.<br />
I<br />
Okhotsk-Chukotka volcanicplutonic<br />
belt.<br />
Continental-margin arc.<br />
metallogenic belt.<br />
I Subduction-related granitic plutonism that formed <strong>the</strong> Okhotsk-Chukotka<br />
(WCA) (Hogatza) (Indian Mounfain, Purccll Mountain, Zanc Western <strong>Alaska</strong> part <strong>of</strong><br />
continental-margin arc. <strong>East</strong>ern extension <strong>of</strong> <strong>East</strong>crn Asia metallogenic belt<br />
Hills)<br />
Okhotsk-Chukotka volcanic-<br />
Manto-rcplaccmcnt dcposit (polymctallic Pn-<br />
I Zn, Au) (Illinois Crcck)<br />
plutonic belt.<br />
Metallogenic Belts Formed in Late Mesozoic <strong>and</strong> Early Cenozoic k uane Continental-Margin Arc. Sou<strong>the</strong>rn <strong>Alaska</strong><br />
Kuskokwim<br />
Sn-Cu-Ag greisen, Hg-Sb-Au epi<strong>the</strong>rmal Continental-margin arc.<br />
Subduction-related granitic plutonism that formed <strong>the</strong> Kluane continental-margin<br />
Mountains (KMT) vein, Au-As polymetallic vein,<br />
Kuskokwim Mountains<br />
arc.<br />
(Kuskokwim<br />
porphyry Mo, porphyry Cu-Au,<br />
sedimentary <strong>and</strong> volcanic belt.<br />
mineral belt)<br />
porphyry Au, granitoid-related Au.<br />
(McLeod, Fox Hills, Chicken Mountain,<br />
Beaver Mountains, Cirque,<br />
<strong>East</strong>-Central <strong>Alaska</strong>,<br />
Tolstoi,Von Frank Mountain, Donlin<br />
I Creek, Vinasale, Arnold)<br />
I Sn greisen <strong>and</strong> vein, tourmaline-topaz- I Continental-margin arc. I Subduction-related granitic plutonism that formed <strong>the</strong> Kluane continental-margin<br />
(younger part) quartz-sulfide greisen, felsic plutonic Yukon-Tanana igneous belt. arc.<br />
(ECA) (Includes U, W skam, porphyry Cu-Mo.<br />
Carmacks belt <strong>of</strong> (Asarco, Casino Ketchem Dome, Lime<br />
porphyry Cu-Mo Peak, Road Metal, Roy Creek, Taurus)<br />
Sou<strong>the</strong>rn <strong>Alaska</strong> (SA) Porphyry Cu, porphyry Cu-Au, Continental-margin arc.<br />
Subduction-related granitic plutonism that formed <strong>the</strong> Kluane continental-margin<br />
polymetallic vein, Ag-Au skarn, Cu- <strong>Alaska</strong> Range-Talkeetna<br />
arc.<br />
Au-Ag skam.<br />
(Kijik River, Golden Zone, Nabesna<br />
River).<br />
Mountains igneous belt.<br />
Metallogenic Belts Formed During Early Tertiary Oblique Subduction <strong>of</strong> Kula-<strong>Far</strong>allon Oceanic Ridge Under Margin <strong>of</strong> Sou<strong>the</strong>rn <strong>and</strong> Sou<strong>the</strong>astern <strong>Alaska</strong><br />
Maclaren (MC) Au quartz vcin.<br />
Extensional.<br />
Oblique subduction <strong>of</strong> Kula-<strong>Far</strong>allon oceanic ridge under margin <strong>of</strong> sou<strong>the</strong>rn<br />
(Lncky Hill <strong>and</strong> Timberline Creek) Veins in low-grade pall: <strong>of</strong><br />
I Maclaren Glacier metamorphic<br />
-<br />
belt.<br />
Talkeetna Mounta~ns Au quartz vein<br />
Extensional.<br />
<strong>Alaska</strong>.<br />
-<br />
Oblique subduction <strong>of</strong> Kula-<strong>Far</strong>allon oceanic ridge under margln <strong>of</strong> sou<strong>the</strong>rn<br />
(TM)<br />
(Independence)<br />
Veins in low-grade part <strong>of</strong><br />
I Talkeetna Formation..<br />
<strong>Alaska</strong>.<br />
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