Counties, states, countries, continents, or oceans | |
Southeast Fairbanks | Census area |
Alaska | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Nabesna A-1 | 1:63,360 Alaska quadrangle |
Nabesna | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
White River | hydrologic unit |
190401 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
Map symbol | Lithology | Unit name |
---|---|---|
KJgn | Sedimentary | Gravina-Nuzotin unit |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Trcnk | Sedimentary | Chitistone and Nizina Limestones and Kamishak Formation |
Trn | Igneous - Volcanic | Nikolai and Goon Dip Greenstones and equivalent rocks |
ID | Data type | Description |
---|---|---|
East Alaska Range - Nabesna | M-Dz | East Alaska Range - Nabesna 43452 line km with spacing 1.20 km over parts of AK |
Nabesna | M/R-D | Nabesna 2204 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SC25 | Placer Au | |
AK-SC32 | Cu (Au) skarn | |
AK-SC22 | Porphyry Cu, BC-Ak type |
Domain | Crust type | Region |
---|---|---|
Wrangellia | Oceanic arc | Alaska |
Sample ID | Rock type | Rock name |
---|---|---|
ACK417 | igneous | intermediate |
Site name | Development | Commodities |
---|---|---|
Reynolds | Prospect | CU |
Site | Status | Commodities |
---|---|---|
Reynolds; Butte Creek Copper Gro... | Inactive | Cu |
Sample ID | Sample source | Sample notes |
---|---|---|
ACK349 | stream/river | stream |
ACK350 | stream/river | stream |
ACK351 | stream/river | 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 |
Western Alaska Range | porphyry copper | Cretaceous porphyry prospects along the Kahiltna Basin-Peninsula terrane boundary |
Eastern Alaska Range and Wrangell Mountains | porphyry copper | Cretaceous (115-105Ma) deposits and prospects along the Nutzotin Basin-Wrangellia terrane boundary; south of the Denali Fault |
Skolai Arc - Eastern Alaska | porphyry copper | Late Paleozoic Skolai Arc of the Wrangellia terrane; south 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. |