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 A-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 |
Map symbol | Lithology | Unit name |
---|---|---|
JDoc | Sedimentary | Igneous rocks |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
ID | Data type | Description |
---|---|---|
Alaska Regional | M-Dz | Alaska Regional 14484 line km with spacing 16.10 km over parts of AK |
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-BR04 | Low-sulfide Au-quartz veins | |
AK-EC07 | Low-sulfide Au-quartz veins | |
AK-BR13 | Placer Au | |
AK-EC13 | Porphyry Cu, BC-Ak type | |
AK-EC14 | Plutonic porphyry Au | |
AK-EC16 | Polymetallic replacement | |
AK-EC18 | Polymetallic vein | |
AK-EC15 | Placer Au |
Domain | Crust type | Region |
---|---|---|
Brooks Range | Passive margin | Alaska |
Ruby | Passive margin | Alaska |
Sample ID | Rock type | Rock name |
---|---|---|
ACN546 | unspecified |
Site name | Development | Commodities |
---|---|---|
West Fork Chandalar River | Occurrence | CU |
Site | Status | Commodities |
---|---|---|
West Fork | Inactive | Cu |
Sample ID | Sample source | Sample notes |
---|---|---|
AID414 | stream/river | earlier USGS job GRD-C-1569, #59-2322;; stream |
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 |
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. |