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 | |
Chandalar C-6 | 1:63,360 Alaska quadrangle |
Chandalar | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Upper Koyukuk River | hydrologic unit |
190406 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
Map symbol | Lithology | Unit name |
---|---|---|
DPxasm | Metamorphic | Mixed assemblage of metasedimentary and metavolcanic rocks in the Brooks Range |
DPxasm | Metamorphic | Mixed assemblage of metasedimentary and metavolcanic rocks in the Brooks Range |
ID | Data type | Description |
---|---|---|
Northeast Alaska '72 | M-D | Northeast Alaska '72 27841 line km with spacing 1.90 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-BR21 | Sediment-hosted Cu | |
AK-BR09 | Mississippi Valley Type | |
AK-BR06 | Kipushi Cu-Pb-Zn |
Domain | Crust type | Region |
---|---|---|
Brooks Range | Passive margin | Alaska |
Site name | Development | Commodities |
---|---|---|
Unnamed (south of the Hammond River) | Occurrence | CU |
Unnamed Occurrence | Occurrence | CU |
Site | Status | Commodities |
---|---|---|
Unnamed (south of the Hammond Ri... | Inactive | As;Cu;Sb;Zn |
Tract name | Deposit type | Geology |
---|---|---|
Brooks Range | porphyry copper | Proterozoic, Devonian, or Cretaceous grantitic intrusions in the Brooks Range. |
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. |