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 | |
Survey Pass B-3 | 1:63,360 Alaska quadrangle |
Survey Pass | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Alatna River | hydrologic unit |
190406 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
Map symbol | Lithology | Unit name |
---|---|---|
Dogn | Metamorphic | Granitic gneiss |
DPxsgm | Metamorphic | Schist, paragneiss, and marble |
DPxsgm | Metamorphic | Schist, paragneiss, and marble |
DPxsgm | Metamorphic | Schist, paragneiss, and marble |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
ID | Data type | Description |
---|---|---|
Baird Mtns.-Ambler River | M-Dz | Baird Mtns.-Ambler River 14323 line km with spacing 1.20 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-BR17 | Zn-Pb-Ag veins | |
AK-BR18 | Cu (Au) skarn | |
AK-BR21 | Sediment-hosted Cu | |
AK-BR20 | Sandstone hosted Pb-Zn | |
AK-BR09 | Mississippi Valley Type | |
AK-BR11 | Porphyry Cu, BC-Ak type | |
AK-BR13 | Placer Au | |
AK-BR06 | Kipushi Cu-Pb-Zn | |
AK-BR12 | Plutonic porphyry Au | |
AK-BR19 | Zn-Pb skarn | |
AK-BR15 | Polymetallic replacement | |
AK-BR16 | Polymetallic vein |
Domain | Crust type | Region |
---|---|---|
Brooks Range | Passive margin | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CCH548 | rock | sedimentary carbonate |
CCH549 | rock | |
CCH550 | rock | |
CCM002 | rock | metamorphic gneiss |
CCM003 | rock | metamorphic gneiss |
CCN037 | rock | igneous granite |
CCN056 | rock | igneous quartz monzonite porphyry |
D195877 | rock | igneous quartz monzonite porphyry |
M132880 | rock | igneous granite |
M133582 | rock | igneous quartz monzonite porphyry |
Sample ID | Date collected | Sample type |
---|---|---|
7042675 | 1978-07-29 | 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 |
---|---|---|
3043484 | 1978-07-29 | Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid. |
Sample ID | Rock type | Rock name |
---|---|---|
CCH548 | sedimentary | carbonate |
CCH549 | unspecified | |
CCH550 | unspecified | |
CCM002 | metamorphic | gneiss |
CCM003 | metamorphic | gneiss |
CCN037 | metamorphic | skarn |
CCN056 | igneous | felsic |
D195877 | igneous | quartz monzonite porphyry |
M132880 | igneous | granite |
M133582 | igneous | quartz monzonite porphyry |
Site name | Development | Commodities |
---|---|---|
Unnamed (west of Awlinyak Creek) | Occurrence | AG BI CU SN F |
Site | Status | Commodities |
---|---|---|
Unnamed (west of Awlinyak Creek) | Inactive | Ag;Bi;Cu;Sn |
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. |