Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Bradfield Canal A-1 | 1:63,360 Alaska quadrangle |
Bradfield Canal | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Southeast Mainland | hydrologic unit |
190101 | hydrologic accounting unit |
Arctic Slope | hydrologic subregion |
Alaska | hydrologic region |
Areas administered by US Federal agencies |
Map symbol | Lithology | Unit name |
---|---|---|
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Tcp | Igneous - Plutonic | Younger phase, Coast plutonic complex of Brew and Morrell (1979b) |
TrPvs | Metamorphic | Metamorphic rocks, southeast Alaska |
Trqd | Igneous - Plutonic | Quartz diorite and granodiorite |
ID | Data type | Description |
---|---|---|
SE Alaska (Granite Fiords) | M-Dz | SE Alaska (Granite Fiords) 2735 line km with spacing 1.60 km over parts of AK |
Bradfield Canal | M/R-D | Bradfield Canal 716 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE05 | Sierran Kuroko mass. sulf. | |
AK-SE07 | Porphyry Cu | |
AK-SE19 | Porphyry Cu, skarn related | |
AK-SE20 | Porphyry Cu-Mo | |
AK-SE13 | Polymetallic vein |
Domain | Crust type | Region |
---|---|---|
Taku | Passive margin | Alaska |
Sample ID | Rock type | Rock name |
---|---|---|
ACI258 | igneous | granodiorite |
Site name | Development | Commodities |
---|---|---|
Top | Prospect | AG AU ZN |
Charles | Occurrence | AG AU CU PB ZN |
Top | Unknown | AG AU ZN |
Charles, Nelson, & Pitcher | Prospect | AU CU AG |
Site | Status | Commodities |
---|---|---|
Charles; Nelson and Pitcher | Inactive | Ag;Au;Cu;Pb;Zn |
Top | Undetermined | Ag;Au;Zn |
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. |