Scientific data near [64.96410,-142.34330]

Search area extends approximately 4.5 km east-west and 10.5 km north-south.

Geographic context

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 D-3	1:63,360 Alaska quadrangle
Eagle	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Eagle to Circle	hydrologic unit
190404	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
MzPzyo	Igneous - Volcanic	Peridotite of dismembered ophiolite of the Yukon-Tanana region
PzPxybg	Metamorphic	Biotite gneiss, marble, schist, quartzite, and amphibolite
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
QTs	Unconsolidated	Poorly consolidated surficial deposits
TKwt	Igneous - Volcanic	Welded tuff and other felsic volcanic rocks
TrMsm	Metamorphic	Seventymile assemblage
TrMsm	Metamorphic	Seventymile assemblage

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
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

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-EC07	Low-sulfide Au-quartz veins
AK-EC13	Porphyry Cu, BC-Ak type
AK-EC14	Plutonic porphyry Au
AK-EC16	Polymetallic replacement
AK-EC19	Cu (Au) skarn
AK-EC21	Sedex Zn-Pb
AK-EC18	Polymetallic vein
AK-EC20	Zn-Pb skarn
AK-EC09	Kipushi Cu-Pb-Zn
AK-EC11	Mississippi Valley Type
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 upper	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.

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Lab ID	Sample medium	Description
AGH269	rock	metamorphic schist
AGH270	rock
AGH271	rock
AGH608	soil
AGH609	soil
AGH610	soil
AGH611	soil
AGH618	sediment
AGH619	sediment
AGH623	sediment
AGH672	rock	metamorphic meta-igneous
AGH673	rock	metamorphic serpentinite
AGH674	rock	metamorphic serpentinite
AGH675	rock	metamorphic serpentinite

Geochemistry of stream sediments in the US from the NURE-HSSR database

National-scale geochemical analysis of stream sediments and soils in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
7028623	1978-06-20	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.

Geochemistry of water samples in the US from the NURE-HSSR database

National-scale geochemical analysis of water samples in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
3030504	1978-06-20	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.

National Geochemical Database: Rock

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"

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Sample ID	Rock type	Rock name
AGH269	metamorphic	schist
AGH270	unspecified
AGH271	unspecified
AGH673	metamorphic	serpentinite
AGH674	unspecified
AGH675	metamorphic	serpentinite

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
Alder Creek	Past Producer	AU AG
Alder Creek Placer	Producer	AU

Alaska Resource Data File

A comprehensive database of Alaskan mineral deposits compiled from the published literature and from unpublished reports and data from industry, the US Bureau of Land Management, and USGS.

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Site	Status	Commodities
Alder Creek	Probably inactive	Au
Alder Creek (lode in Eagle D-3 q...	Active?	Au
Kill Zone 2	Active?	Ag;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.

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Sample ID	Sample source	Sample notes
AGH618	stream/river	stream
AGH619	stream/river	stream
AGH623	stream/river	stream

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.

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Sample ID	Sample source	Sample notes
AGH608
AGH609
AGH610
AGH611

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.

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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.