Counties, states, countries, continents, or oceans | |
Map quadrangles, from USGS or Canadian NTS | |
Ketchikan A-5 | 1:63,360 Alaska quadrangle |
Ketchikan | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Ketchikan | hydrologic unit |
190101 | hydrologic accounting unit |
Arctic Slope | hydrologic subregion |
Alaska | hydrologic region |
Map symbol | Lithology | Unit name |
---|---|---|
DOgi | Igneous - Plutonic | Syenite, trondhjemite, and granite |
KJgn | Sedimentary | Gravina-Nuzotin unit |
SOmi | Metamorphic | Heterogeneous metamorphic rocks, southeast Alaska |
Trhgs | Sedimentary | Hyd Group sedimentary rocks, undivided |
Trhgv | Sedimentary | Hyd Group igneous rocks, undivided |
w | Water |
ID | Data type | Description |
---|---|---|
Ketchikan '76 | M-Dz | Ketchikan '76 8529 line km with spacing 1.60 km over parts of AK |
Annette Island | M-D | Annette Island 997 line km with spacing 0.40 km over parts of AK |
Ketchikan | M/R-D | Ketchikan 1609 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE13 | Polymetallic vein | |
AK-SE03 | Low-sulfide Au-quartz veins |
Domain | Crust type | Region |
---|---|---|
Alexander | Oceanic arc | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CHY957 | rock | igneous mafic |
CHY958 | rock | metamorphic phyllite-slate |
CHY959 | rock | igneous mafic |
CHY960 | rock | metamorphic phyllite-slate |
CHY961 | rock | igneous mafic |
CHY965 | rock | igneous intermediate |
CHY966 | rock | igneous greenstone |
CHY967 | rock | sedimentary chert |
CHY968 | rock | sedimentary chert |
CHY969 | rock | igneous mafic |
CHY973 | rock | igneous mafic |
CHY974 | rock | metamorphic phyllite-slate |
Sample ID | Rock type | Rock name |
---|---|---|
CHY957 | igneous | mafic |
CHY958 | metamorphic | phyllite-slate |
CHY959 | igneous | mafic |
CHY960 | metamorphic | phyllite-slate |
CHY961 | igneous | mafic |
CHY965 | igneous | intermediate |
CHY966 | igneous | mafic |
CHY967 | unspecified | chert-jasperoid |
CHY968 | unspecified | chert-jasperoid |
CHY969 | igneous | mafic |
CHY973 | igneous | mafic |
CHY974 | metamorphic | phyllite-slate |
Site name | Development | Commodities |
---|---|---|
Unnamed (near Bush Mountain) | Occurrence | AG AU CU |
Unnamed (southwest ridge of Bush Mountain) | Occurrence | AG AU CR CU MO NI PB |
Unnamed (near Helen Todd Lake) | Occurrence | PB |
Site | Status | Commodities |
---|---|---|
Unnamed (southwest ridge of Bush... | Undetermined | Ag;Au;Cr;Cu;Mo;Ni;Pb |
Unnamed (near Helen Todd Lake) | Undetermined | Pb |
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. |