Counties, states, countries, continents, or oceans | |
Juneau | Borough |
Alaska | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Juneau D-4 | 1:63,360 Alaska quadrangle |
Juneau | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Lynn Canal | hydrologic unit |
190103 | 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 |
---|---|---|
KJgn | Sedimentary | Gravina-Nuzotin unit |
KJgn | Sedimentary | Gravina-Nuzotin unit |
Kmgr | Igneous - Plutonic | Granitic rocks of central and southeast Alaska |
MzPzss | Metamorphic | Metasedimentary and minor metavolcanic rocks along the west side of the Coast plutonic complex of Brew and Morrell (1979b) |
MzPzsv | Metamorphic | Metavolcanic rocks west of the Coast plutonic complex of Brew and Morrell (1979b) |
ID | Data type | Description |
---|---|---|
Juneau '82 | M-D | Juneau '82 6598 line km with spacing 1.60 km over parts of AK |
Juneau | M/R-D | Juneau 1319 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE03 | Low-sulfide Au-quartz veins | |
AK-SE05 | Sierran Kuroko mass. sulf. |
Domain | Crust type | Region |
---|---|---|
Taku | Passive margin | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CBR195 | rock | igneous quartz diorite |
CBR196 | rock | metamorphic unspecified |
CFT063 | rock | igneous intermediate |
CFT064 | rock | igneous intermediate |
CGK333 | rock | metamorphic unspecified |
CGK334 | rock | metamorphic unspecified |
CGK335 | rock | metamorphic unspecified |
CGK336 | rock | metamorphic unspecified |
CGK337 | rock | metamorphic unspecified |
M131762 | rock | igneous quartz diorite |
M193280 | rock | igneous gabbro |
M193281 | rock | igneous gabbro |
M193282 | rock | igneous pyroxenite |
Sample ID | Rock type | Rock name |
---|---|---|
CBR195 | metamorphic | gneiss |
CBR196 | metamorphic | unspecified |
CFT063 | igneous | intermediate |
CFT064 | igneous | intermediate |
CGK333 | metamorphic | unspecified |
CGK334 | metamorphic | unspecified |
CGK335 | metamorphic | unspecified |
CGK336 | metamorphic | unspecified |
CGK337 | metamorphic | unspecified |
M131761 | igneous | quartz diorite |
M131762 | igneous | quartz diorite |
M184537 | igneous | diorite |
M184538 | igneous | diorite |
M193280 | igneous | gabbro |
M193281 | igneous | gabbro |
M193282 | igneous | pyroxenite |
Site name | Development | Commodities |
---|---|---|
Comet & Kensington Mines | Past Producer | AU PB CU |
Comet | Past Producer | AU |
Comet Mine | Past Producer | AU CU PB |
Johnson Prospect | Occurrence | AU |
Johnson | Past Producer | AU |
Cumberland | Prospect | AU |
Site | Status | Commodities |
---|---|---|
Eureka | Active | Au |
Kensington | Active | Au |
Northern Belle; Elmira; Yellowja... | Active | Au |
Bear | Active | Au |
Comet | Active | Au |
Seward; Thomas | Active | Au |
Cumberland | Active | Au |
Kensington (Coeur-Alaska) | Active | Ag;Au;Te |
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. |