Scientific data near [64.99957,-147.50247]

Search area extends approximately 2.2 km east-west and 5.3 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Fairbanks North Star	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Fairbanks D-2	1:63,360 Alaska quadrangle
Fairbanks	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Tolovana River	hydrologic unit
190405	hydrologic accounting unit
Southwest Alaska	hydrologic subregion
Alaska	hydrologic region

Geology of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format

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Map symbol	Lithology	Unit name
PzPxyqs	Metamorphic	Quartzite and pelitic schist
PzPxyqs	Metamorphic	Quartzite and pelitic schist
Pzyms	Metamorphic	Mafic schist and amphibolite
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided

Airborne geophysical surveys

Aerial surveys of magnetic anomaly and gamma ray emission; older surveys were analog record which have been digitized, newer surveys collected data in digital form.

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ID	Data type	Description
Alaska Regional	M-Dz	Alaska Regional 14484 line km with spacing 16.10 km over parts of AK
Northeast Alaska '73	M-D	Northeast Alaska '73 25044 line km with spacing 1.60 km over parts of AK
Big Delta-Fairbanks	M-Dz	Big Delta-Fairbanks 25749 line km with spacing 1.20 km over parts of AK
Big Delta-Fairbanks	M-Dz	Big Delta-Fairbanks 25749 line km with spacing 1.20 km over parts of AK
Fairbanks EM West	M-D	Fairbanks EM West 5385 line km with spacing 0.40 km over parts of AK
Fairbanks	M/R-D	Fairbanks 2035 line km with spacing 9.60 km over parts of AK
Fairbanks 1994	M/EM-D	Fairbanks 1994 4325 line km with spacing 0.40 km over parts of AK
Goldstream Valley	M/EM-D	Goldstream Valley 2029 line km with spacing 0.10 km over parts of AK

Estimates of undiscovered mineral resources

National Mineral Resource Assessment 1998: Estimates of the number of undiscovered mineral resources of gold, silver, copper, lead, and zinc within identified permissive tracts (geographic areas in which mineral deposits may form).

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Tract	Deposit Type	Mineralization age
AK-EC05	Au-Sb veins
AK-EC07	Low-sulfide Au-quartz veins
AK-EC08	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

The continental crust

Seventy-seven major components of the North American continent were delineated at a general scale (1:5,000,000); including the general composition, geological environment, and types of primary metals endowments that can be expected in each domain.

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Domain	Crust type	Region
Yukon-Tanana lower	Passive margin	Alaska

Alaska Geochemical Database, Version 2.0 (AGDB2)--including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

Database Home

Lab ID	Sample medium	Description
D305217	soil
D305218	soil
D305219	soil
D305220	soil
D305221	soil
D305222	soil
D305223	soil
D305224	soil
D305225	soil
D305226	soil
D305227	soil
D305228	soil
D305229	soil
D305230	soil
D305231	soil
D305232	soil
D305233	soil
D305234	soil
D305235	soil
D305236	soil
D305237	soil
D305238	soil
D305239	soil
D305240	soil
D305241	soil
D305242	soil
D305243	soil
D305244	soil
D305245	soil
D305246	soil
D305247	soil
D305248	soil
D305249	soil
D305250	soil
D305251	soil
D305252	soil
D305253	soil
D305254	soil
D305255	soil
D305256	soil
D305257	soil
D305258	soil
D305259	soil
D305260	soil
D305261	soil
D305262	soil
D305263	soil
D305264	soil
D305265	soil
D305266	soil
D305267	soil
D305268	soil
D305269	soil
D305270	soil
D305271	soil
D305272	soil
D305273	soil
D305274	soil
D305275	soil
D305276	soil
D305277	soil
D305278	soil
D305279	soil
D305280	soil
D305281	soil
D305282	soil
D305283	soil
D305284	soil
D305285	soil
D305286	soil
D305287	soil
D305288	soil
D305289	soil
D305290	soil
D305291	soil
D305292	soil
D320668	soil
M119866	sediment
M119867	sediment
M119868	sediment
M119869	sediment
M119878	sediment
M119879	sediment

Mineral Resource Data System

MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.

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Site name	Development	Commodities
Speculation	Prospect	AU

National Geochemical Database: Sediment

Geochemical analysis of sediment samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
M119866		clay;
M119867		clay;
M119868		clay;
M119869		clay;
M119878		clay;
M119879		clay;

National Geochemical Database: Soil

Geochemical analysis of soil samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
D305217		core, +10;
D305218		core, +10;
D305219		core, +10;
D305220		core, +10;
D305221		core, +10;
D305222		core, +10;
D305223		core, +10;
D305224		core, +10;
D305225		core, +10;
D305226		core, +10;
D305227		core, +10;
D305228		core, +10;
D305229		core, +10;
D305230		core, +10;
D305231		core, +10;
D305232		core, +10;
D305233		core, +10;
D305234		core, +10;
D305235		core, +10;
D305236		core, +10;
D305237		core, +10;
D305238		core, +10;
D305239		core;
D305240		core;
D305241		core;
D305242		core;
D305243		core;
D305244		core;
D305245		core;
D305246		core;
D305247		core;
D305248		core;
D305249		core;
D305250		core;
D305251		core;
D305252		core;
D305253		core;
D305254		core;
D305255		core;
D305256		core;
D305257		core;
D305258		core;
D305259		core;
D305260		core;
D305261		core;
D305262		core;
D305263		core;
D305264		core;
D305265		core;
D305266		core;
D305267		core;
D305268		core;
D305269		core;
D305270		core;
D305271		core;
D305272		core;
D305273		core;
D305274		core;
D305275		core;
D305276		core;
D305277		core;
D305278		core;
D305279		core;
D305280		core;
D305281		core;
D305282		core;
D305283		core;
D305284		core;
D305285		core;
D305286		core;
D305287		core;
D305288		core;
D305289		core;
D305290		core;
D305291		core;
D305292		core;
D320668	forest/scattered timberland	mull, humus; Sam Skidmore;

Global assessment of undiscovered copper resources

Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

Database Home

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
Chukotka	porphyry copper	Early to Late Cretaceous volcanic and intrusive rocks composing island-arc, continental-arc, and collisional magmatic belts associated with the Chukotka microcontinent.
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.

Prospect- and mine-related features on USGS topographic maps

Symbols indicating mining-related features digitized from historical USGS topographic maps in the western part of the conterminous US. Includes prospect pits, mine shafts and adits, quarries, open-pit mines, tailings piles and ponds, gravel and borrow pit

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Feature ID	Feature type	Feature name
Tailings - Undifferentiated	polygon