Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Sitka C-2 | 1:63,360 Alaska quadrangle |
Sitka | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Admiralty Island | hydrologic unit |
190102 | hydrologic accounting unit |
Arctic Slope | hydrologic subregion |
Alaska | hydrologic region |
Areas administered by US Federal agencies |
ID | Data type | Description |
---|---|---|
Sitka | M/R-D | Sitka 579 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE05 | Sierran Kuroko mass. sulf. | |
AK-SE13 | Polymetallic vein | |
AK-SE17 | Synorogenic-synvolcanic Ni-Cu |
Domain | Crust type | Region |
---|---|---|
Alexander | Oceanic arc | Alaska |
Site name | Development | Commodities |
---|---|---|
Sikady | Occurrence | CU |
Unnamed Copper Occurrence | Occurrence | CU |
Site | Status | Commodities |
---|---|---|
Unnamed (northwest of Sikady Lak... | Inactive | Cu |
Tract name | Deposit type | Geology |
---|---|---|
Late Continental Arc | porphyry copper | Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Oligocene-Pliocene) |
Intermontane Island-Arc | porphyry copper | Porphyry Cu systems associated with pre-accretionary Triassic and Jurassic calc-alkalic island arcs that formed offshore of western North America |
Intermontane Island-Arc Cu-Au | porphyry copper | Triassic and Jurassic alkalic igneous rocks of accreted island arcs that formed offshore of western North America |
Insular Mixed Island- and Continental Arc | porphyry copper | Calc-alkalic igneous rocks of accreted Jurassic island-arc terranes |
Cordilleran Continental Arc | porphyry copper | Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Jurassic-Eocene) |
Southeast Alaska Tertiary | porphyry copper | Tertiary subduction and postsubduction calc-alkalic plutons of southeast Alaska |
Alaska Peninsula and Aleutian Islands | porphyry copper | Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands |
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. |