Counties, states, countries, continents, or oceans | |
Southeast Fairbanks | Census area |
Alaska | state |
United States | country |
North America | continent |
Land | continent |
Map quadrangles, from USGS or Canadian NTS | |
Eagle A-2 | 1:63,360 Alaska quadrangle |
Eagle | 1:250,000 Alaska quadrangle |
Watershed boundaries (USGS hydrologic units) | |
Fortymile River | hydrologic unit |
190401 | hydrologic accounting unit |
Southwest Alaska | hydrologic subregion |
Alaska | hydrologic region |
Map symbol | Lithology | Unit name |
---|---|---|
Pzkp | Metamorphic | Keevy Peak Formation and similar rocks |
Pzyms | Metamorphic | Mafic schist and amphibolite |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
Qs | Unconsolidated | Unconsolidated surficial deposits, undivided |
QTs | Unconsolidated | Poorly consolidated surficial deposits |
QTs | Unconsolidated | Poorly consolidated surficial deposits |
Trqd | Igneous - Plutonic | Quartz diorite and granodiorite |
w | Water |
ID | Data type | Description |
---|---|---|
Alaska Regional | M-Dz | Alaska Regional 14484 line km with spacing 16.10 km over parts of AK |
Eagle | M-Dz | Eagle 12713 line km with spacing 1.20 km over parts of AK |
Eagle | M/R-D | Eagle 2035 line km with spacing 9.60 km over parts of AK |
East Alaska Range - Tanacross | M-Dz | East Alaska Range - Tanacross 43452 line km with spacing 1.20 km over parts of AK |
Fortymile mining district | M/EM-D | Fortymile mining district 7648 line km with spacing 0.40 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-EC07 | Low-sulfide Au-quartz veins | |
AK-EC13 | Porphyry Cu, BC-Ak type | |
AK-EC14 | Plutonic porphyry Au | |
AK-EC18 | Polymetallic vein | |
AK-EC15 | Placer Au |
Domain | Crust type | Region |
---|---|---|
Yukon-Tanana upper | Passive margin | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
AKB405 | sediment | |
BDO385 | rock | |
BEW910 | concentrate | panned C1 fraction |
BFE453 | concentrate | panned C1 fraction |
BFN362 | concentrate | panned C3 fraction |
CEN206 | rock | igneous diorite |
CEN207 | rock | igneous diorite |
CEN208 | rock | igneous diorite |
CEN209 | rock | igneous diorite |
CEN210 | rock | igneous diorite |
CEN211 | rock | igneous diorite |
CGL981 | rock | igneous granodiorite |
CHW011 | concentrate | panned C3 fraction |
CJK457 | mineral | |
CJK458 | mineral | |
CJK459 | mineral | |
CJK499 | mineral | |
CJK500 | mineral | |
CJK501 | mineral | |
CJK502 | mineral | |
CJK503 | mineral | |
D152145 | concentrate | panned C3 fraction |
F016256 | sediment | |
M160127 | rock | metamorphic amphibolite |
Sample ID | Date collected | Sample type |
---|---|---|
7028227 | 1978-06-02 | Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves. |
Sample ID | Date collected | Sample type |
---|---|---|
3030093 | 1978-06-02 | Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid. |
Sample ID | Rock type | Rock name |
---|---|---|
CEN206 | igneous | diorite |
CEN207 | igneous | diorite |
CEN208 | igneous | diorite |
CEN209 | igneous | diorite |
CEN210 | igneous | diorite |
CEN211 | igneous | diorite |
CGL981 | igneous | granodiorite |
M160127 | metamorphic | amphibolite |
Site name | Development | Commodities |
---|---|---|
Atwater Bar | Past Producer | AU AG SN W U |
Unnamed Occurrence | Occurrence | AG AU PB CU ZN |
Silver Queen | Prospect | AG AU |
Site | Status | Commodities |
---|---|---|
Highway Copper; Bruce | Inactive | Ag;Au;Cu |
Mosquito Fork; South Fork of the... | Probably inactive | Au |
Ninja Jim | Active? | Au |
Sample ID | Sample source | Sample notes |
---|---|---|
AKB405 | stream/river | stream |
F016256 | stream/river | Stream Sediments; reanalyzed NURE sample;; stream |
Sample ID | Sample source | Sample notes |
---|---|---|
BEW910 | stream/river | stream |
BFE453 | stream/river | stream |
BFN362 | stream/river | stream |
CHW011 | stream/river | 85ADGGS06 - South Fk, Lorz; sample collected by Alaska DGGS;; stream |
D152145 | stream/river | stream |
Tract name | Deposit type | Geology |
---|---|---|
Yukon-Tanana Upland | porphyry copper | Kluane Arc and Tertiary Kuskokwim Mountains volcanic-plutonic belt (continuation of Canadian Cordilleran continental arc); north of the Denali Fault |
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. |