Counties, states, countries, continents, or oceans | |
Yukon-Koyukuk | Census area |
Alaska | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Ruby D-4 | 1:63,360 Alaska quadrangle |
Ruby | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Melozitna River | hydrologic unit |
190407 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
ID | Data type | Description |
---|---|---|
West-Central Alaska | M-D | West-Central Alaska 21360 line km with spacing 9.60 km over parts of AK |
Ruby 1975 | M-D | Ruby 1975 5310 line km with spacing 1.60 km over parts of AK |
Ruby | M/R-D | Ruby 2188 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-WC22 | Polymetallic vein | |
AK-WC17 | Placer Au | |
AK-EC13 | Porphyry Cu, BC-Ak type | |
AK-EC14 | Plutonic porphyry Au | |
AK-EC06 | Low-sulfide Au-quartz veins | |
AK-EC01 | Besshi massive sulfide |
Domain | Crust type | Region |
---|---|---|
Ruby | Passive margin | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
W198827 | rock | metamorphic gneiss |
Sample ID | Rock type | Rock name |
---|---|---|
W198827 | metamorphic | gneiss |
Site | Status | Commodities |
---|---|---|
Bull Ridge | Active | Cu;Zn |
Tract name | Deposit type | Geology |
---|---|---|
Yukon-Tanana Upland | porphyry copper | Kluane Arc and Tertiary Kuskokwim Mountains volcanic-plutonic belt (continuation of Canadian Cordilleran continental arc); north of the Denali Fault |
Koyukuk Arc | porphyry copper | Late Jurassic (?) and Early Cretaceous Koyukuk island arc. |
Chukotka | porphyry copper | Early to Late Cretaceous volcanic and intrusive rocks composing island-arc, continental-arc, and collisional magmatic belts associated with the Chukotka microcontinent. |
Pacific Margin | porphyry copper | Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia. |