Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Skagway A-6 | 1:63,360 Alaska quadrangle |
Skagway | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Glacier Bay | hydrologic unit |
190103 | hydrologic accounting unit |
Arctic Slope | hydrologic subregion |
Alaska | hydrologic region |
Areas administered by US Federal agencies |
Map symbol | Lithology | Unit name |
---|---|---|
KJse | Igneous - Plutonic | Saint Elias suite of Gordey and Makepeace (2003) and similar rocks |
KJse | Igneous - Plutonic | Saint Elias suite of Gordey and Makepeace (2003) and similar rocks |
KTrm | Tectonite | Kelp Bay Group, undivided |
KTrm | Tectonite | Kelp Bay Group, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
ID | Data type | Description |
---|---|---|
Glacier Bay East | M-D | Glacier Bay East 6195 line km with spacing 1.60 km over parts of AK |
Glacier Bay West | M-D | Glacier Bay West 1963 line km with spacing 1.60 km over parts of AK |
Skagway | M/R-D | Skagway 450 line km with spacing 9.60 km over parts of AK |
Mt Fairweather | M/R-D | Mt Fairweather 764 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE07 | Porphyry Cu | |
AK-SE20 | Porphyry Cu-Mo | |
AK-SE05 | Sierran Kuroko mass. sulf. | |
AK-SE19 | Porphyry Cu, skarn related |
Domain | Crust type | Region |
---|---|---|
Alexander | Oceanic arc | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
D125811 | sediment | |
D125884 | sediment | |
LCG085 | rock | igneous granitoid |
LCG117 | rock | igneous granitoid |
LCG118 | rock | igneous granitoid |
LCG122 | rock | metamorphic greisen |
LCI650 | sediment | |
LCI951 | rock | |
LDM372 | sediment | |
LDM406 | sediment |
Sample ID | Rock type | Rock name |
---|---|---|
LCG085 | metamorphic | gneiss |
LCG117 | igneous | unspecified |
LCG118 | igneous | unspecified |
LCG120 | igneous | unspecified |
LCG122 | unspecified | |
LCI951 | unspecified |
Site name | Development | Commodities |
---|---|---|
Unnamed (on the west side of Tarr Inlet) | Occurrence | AG CU PB ZN AU |
Unnamed (west of Tarr Inlet) | Occurrence | AU |
Site | Status | Commodities |
---|---|---|
Unnamed (west of Tarr Inlet) | Inactive | Au |
Sample ID | Sample source | Sample notes |
---|---|---|
D125811 | stream/river | silt & clay; stream |
D125884 | stream/river | silt & clay; stream |
LCI650 | stream/river | mixed base-precious metal mineralization;; collected by USBM;; stream |
LDM372 | stream/river | G083, D125811;; stream |
LDM406 | stream/river | G092, D125884;; 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. |