Counties, states, countries, continents, or oceans | |
Sitka | Borough |
Alaska | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Sitka C-7 | 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 |
Map symbol | Lithology | Unit name |
---|---|---|
JTrpp | Tectonite | Pinnacle Peak Phyllite |
Kkbm | Tectonite | Khaz Complex |
Kkbm | Tectonite | Khaz Complex |
Kkbm | Tectonite | Khaz Complex |
Ksg | Sedimentary | Sitka Graywacke, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Trn | Igneous - Volcanic | Nikolai and Goon Dip Greenstones and equivalent rocks |
Trwm | Sedimentary | Whitestripe Marble of 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 '78 | M-D | Sitka '78 5536 line km with spacing 0.80 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-SE03 | Low-sulfide Au-quartz veins | |
AK-SE10 | Basaltic Cu | |
AK-SE11 | Cyprus massive sulfide |
Domain | Crust type | Region |
---|---|---|
Chugach | Accretionary wedge | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CCX075 | rock | |
CCX341 | sediment | |
CCX344 | sediment | |
CCX560 | concentrate | panned only concentrate |
CCX563 | concentrate | panned only concentrate |
EFH086 | concentrate | panned C3 fraction |
EFH089 | concentrate | panned C3 fraction |
LEQ708 | rock | metamorphic schist |
LEQ709 | rock | metamorphic schist |
LEQ710 | rock | metamorphic marble |
LEQ711 | rock | metamorphic marble |
LER035 | rock | metamorphic schist |
LER036 | rock | metamorphic schist |
LER049 | rock | metamorphic schist |
LER050 | rock | metamorphic schist |
LER226 | rock | |
LER227 | rock | |
LER271 | rock | igneous intermediate |
LER272 | rock | igneous intermediate |
LER273 | rock | sedimentary siltstone |
LER274 | rock | sedimentary siltstone |
Sample ID | Rock type | Rock name |
---|---|---|
CCX075 | unspecified | |
LEQ708 | metamorphic | schist |
LEQ709 | metamorphic | schist |
LEQ710 | metamorphic | marble |
LEQ711 | metamorphic | marble |
LER035 | metamorphic | schist |
LER036 | metamorphic | schist |
LER049 | metamorphic | schist |
LER050 | metamorphic | schist |
LER226 | unspecified | |
LER227 | unspecified | |
LER271 | igneous | intermediate |
LER272 | igneous | intermediate |
LER273 | sedimentary | siltstone |
LER274 | sedimentary | siltstone |
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. |