Counties, states, countries, continents, or oceans | |
Juneau | Borough |
Alaska | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Sumdum D-6 | 1:63,360 Alaska quadrangle |
Sumdum | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Mainland | hydrologic unit |
190102 | hydrologic accounting unit |
Arctic Slope | hydrologic subregion |
Alaska | hydrologic region |
Areas administered by US Federal agencies | |
Tongass National Forest | National Forest |
National Forest FS | Type of land area |
FS | Federal land areas administered by FS |
ID | Data type | Description |
---|---|---|
Sumdum | M/R-D | Sumdum 426 line km with spacing 9.60 km over parts of AK |
Domain | Crust type | Region |
---|---|---|
Taku | Passive margin | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
LBL407 | rock | metamorphic schist |
LBL408 | rock | metamorphic schist |
LBL409 | rock | metamorphic schist |
LBL794 | sediment | |
LBL795 | sediment |
Sample ID | Rock type | Rock name |
---|---|---|
LBL407 | metamorphic | schist |
LBL408 | metamorphic | schist |
LBL409 | metamorphic | schist |
Site name | Development | Commodities |
---|---|---|
Boulder Creek Placer | Producer | AU |
Boulder Creek | Past Producer | AU |
Site | Status | Commodities |
---|---|---|
Boulder Creek | Undetermined | Au |
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. |