Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Mt Fairweather C-1 | 1:63,360 Alaska quadrangle |
Mt Fairweather | 1:250,000 Alaska quadrangle |
Areas administered by US Federal agencies |
ID | Data type | Description |
---|---|---|
Glacier Bay East | M-D | Glacier Bay East 6195 line km with spacing 1.60 km over parts of AK |
Mt Fairweather | M/R-D | Mt Fairweather 764 line km with spacing 9.60 km over parts of AK |
Domain | Crust type | Region |
---|---|---|
Alexander | Oceanic arc | Alaska |
Sample ID | Rock type | Rock name |
---|---|---|
D123277 | metamorphic | marble |
Site name | Development | Commodities |
---|---|---|
Willoughby Island West | Prospect | SB CU AU PB AG |
Smith prospect | Past Producer | AG AU CU PB SB |
Site | Status | Commodities |
---|---|---|
Smith prospect; Treadwell Yukon ... | Inactive | Ag;Au |
Sample ID | Sample source | Sample notes |
---|---|---|
D123218 | stream/river | silt and clay; stream |
D123219 | stream/river | silt and clay; stream |
LDL903 | stream/river | F466, D123218;; stream |
LDL904 | stream/river | F466, D123219;; stream |
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. |