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 D-4 | 1:63,360 Alaska quadrangle |
Chandalar | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Middle Fork-North Fork | hydrologic unit |
190403 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
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-BR11 | Porphyry Cu, BC-Ak type | |
AK-BR15 | Polymetallic replacement | |
AK-BR16 | Polymetallic vein | |
AK-BR18 | Cu (Au) skarn | |
AK-BR19 | Zn-Pb skarn | |
AK-BR09 | Mississippi Valley Type | |
AK-BR12 | Plutonic porphyry Au | |
AK-BR13 | Placer Au | |
AK-BR06 | Kipushi Cu-Pb-Zn |
Domain | Crust type | Region |
---|---|---|
Brooks-Northslope1 | Passive margin | Alaska |
Brooks Range | Passive margin | Alaska |
Sample ID | Date collected | Sample type |
---|---|---|
7039003 | 1978-08-07 | Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves. |
Sample ID | Date collected | Sample type |
---|---|---|
3040150 | 1978-08-07 | Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid. |
Site name | Development | Commodities |
---|---|---|
Jim-Montana | Prospect | CU ZN AG PB |
Site | Status | Commodities |
---|---|---|
Jim-Montana | Inactive | Cu;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. |