Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Sitka D-3 | 1:63,360 Alaska quadrangle |
Sitka | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Baranof-Chicagof Islands | 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 |
Map symbol | Lithology | Unit name |
---|---|---|
Dfr | Igneous - Volcanic | Freshwater Bay and Port Refugio Formations |
MDip | Sedimentary | Iyoukeen and Peratrovich Formations |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Sl | Sedimentary | Limestone, southeast Alaska |
w | Water |
ID | Data type | Description |
---|---|---|
Southeastern Alaska | M-D | Southeastern Alaska 12364 line km with spacing 9.60 km over parts of AK |
Sitka | M/R-D | Sitka 579 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE09 | Cu Skarn | |
AK-SE14 | Zn-Pb skarn |
Domain | Crust type | Region |
---|---|---|
Alexander | Oceanic arc | Alaska |
Site name | Development | Commodities |
---|---|---|
Richard 1-4 | Prospect | GYP |
Richard Gypsum | Prospect | GYP |
Site | Status | Commodities |
---|---|---|
Richard 1-4 | Probably inactive | Gypsum |
Richard Gypsum | Undetermined | Gypsum |
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. |