Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Sitka D-7 | 1:63,360 Alaska quadrangle |
Sitka | 1:250,000 Alaska quadrangle |
ID | Data type | Description |
---|---|---|
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 |
Domain | Crust type | Region |
---|---|---|
Chugach | Accretionary wedge | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CCX001 | sediment | |
CCX121 | concentrate | panned only concentrate |
CDC065 | rock | igneous intermediate |
CDC066 | rock | igneous intermediate |
CDC067 | rock | igneous intermediate |
CDC068 | rock | igneous intermediate |
CDC069 | rock | metamorphic unspecified |
CDC070 | rock | metamorphic unspecified |
EFD938 | concentrate | panned C3 fraction |
EFN100 | concentrate | panned C1 fraction |
EFN101 | concentrate | panned C2 fraction |
Sample ID | Rock type | Rock name |
---|---|---|
CDC065 | igneous | intermediate |
CDC066 | igneous | intermediate |
CDC067 | igneous | intermediate |
CDC068 | igneous | intermediate |
CDC069 | metamorphic | unspecified |
CDC070 | metamorphic | unspecified |
Site name | Development | Commodities |
---|---|---|
Jay & Kathy B | Prospect | AU AG |
Site | Status | Commodities |
---|---|---|
Jay and Kathy B | Undetermined | Ag;Au |
Elk | Undetermined | Au |
Sample ID | Sample source | Sample notes |
---|---|---|
CCX001 | stream/river | 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. |