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 | |
Medfra C-4 | 1:63,360 Alaska quadrangle |
Medfra | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Nowitna River | hydrologic unit |
190407 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
ID | Data type | Description |
---|---|---|
Medfra '78 | M-D | Medfra '78 10702 line km with spacing 1.60 km over parts of AK |
Medfra | M/R-D | Medfra 2245 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-WC16 | Plutonic porphyry Au | |
AK-WC22 | Polymetallic vein | |
AK-WC17 | Placer Au | |
AK-WC07 | Epithermal vein, hot spring Au |
Domain | Crust type | Region |
---|---|---|
Farewell-McGrath | Passive margin | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CCS135 | rock | sedimentary sandstone |
CCS136 | rock | sedimentary sandstone |
CCS137 | rock | metamorphic hornfels |
CCS138 | rock | igneous felsic porphyry |
CDS001 | rock | sedimentary argillite |
CDS002 | rock | sedimentary sandstone |
CDS003 | rock | sedimentary sandstone |
CDS005 | rock | sedimentary argillite |
CDS006 | rock | sedimentary argillite |
Sample ID | Rock type | Rock name |
---|---|---|
CCS133 | sedimentary | sandstone |
CCS134 | sedimentary | argillite |
CCS135 | sedimentary | sandstone |
CCS136 | sedimentary | sandstone |
CCS137 | metamorphic | hornfels |
CCS138 | igneous | felsic porphyry |
CDS001 | sedimentary | argillite |
CDS002 | sedimentary | sandstone |
CDS003 | sedimentary | sandstone |
CDS005 | sedimentary | argillite |
CDS006 | sedimentary | argillite |
Site name | Development | Commodities |
---|---|---|
Tarn | Prospect | AU CU AS SB |
Site | Status | Commodities |
---|---|---|
Tarn | Inactive | Au;Cu |
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 |
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. |