Scientific data near [65.03814,-150.72874]

Search area extends approximately 8.9 km east-west and 21.1 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Yukon-Koyukuk	Census area
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Tanana A-2	1:63,360 Alaska quadrangle
Tanana	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Lower Tanana 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
Kkg	Sedimentary	Flysch and quartzite, Kandik Group and equivalents
Kkg	Sedimentary	Flysch and quartzite, Kandik Group and equivalents
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
TKg	Igneous - Plutonic	Felsic granitic rocks
TKg	Igneous - Plutonic	Felsic granitic rocks

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
West-Central Alaska	M-D	West-Central Alaska 21360 line km with spacing 9.60 km over parts of AK
Northeast Alaska '72	M-D	Northeast Alaska '72 27841 line km with spacing 1.90 km over parts of AK
Rampart-Manley	M-D	Rampart-Manley 4828 line km with spacing 0.40 km over parts of AK
Tanana	M/R-D	Tanana 1882 line km with spacing 9.60 km over parts of AK
Rampart-Manley extended	M/EM-D	Rampart-Manley extended 7510 line km with spacing 0.40 km over parts of AK
Kantishna River	M/R-D	Kantishna River 2188 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-EC13	Porphyry Cu, BC-Ak type
AK-EC14	Plutonic porphyry Au
AK-EC06	Low-sulfide Au-quartz veins
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
Wickersham	Passive margin	Alaska

Radiometric ages of rocks from Alaska

Radiometric ages of rocks or minerals sampled from Alaska. The data were collected from professional publications and/or received from researchers and used by permission.

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Record	Type	Comment
60ATb105

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
D320662	soil
D320663	soil
D320666	soil
D320676	soil
D320682	soil
D320683	soil

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
7032852	1978-06-07	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
3034845	1978-06-07	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.

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
Barrett	Prospect	AU CO CU PB AG
Hot Springs Dome Prospect	Occurrence	AU AG CU PB CO NI REE MN
Barrett Prospect, Hot Springs Dome	Occurrence	CO NI

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
Unnamed (northwest of Manley Hot...	Inactive	Zn
Hot Springs Dome; Barrett; Donne...	Inactive	Au
Unnamed (Bean Ridge)	Inactive	Au;Pb;Zn
Unnamed (Hot Springs Dome, east ...	Inactive	Ag;Au;Cu;Pb;Zn
Unnamed (head of Blowback Creek)	Inactive	Ag;Au;Cu
Unnamed (north spur of Bean Ridg...	Inactive	Zn
Unnamed (northeast of Manley Hot...	Inactive	Cu;Zn

An index to PGE-Ni-Cr deposits and occurrences in selected mineral-occurrence databases (web-accessible database)

A compendium of references to previously published databases and database records that describe PGE, nickel, and chromium deposits and occurrences. These data show where to obtain more detailed information about each deposit or occurrence.

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Deposit name	Deposit type	Location
Barrett Prospect, Hot Springs Dome	Occurrence	Alaska, United States

National Geochronological Database

Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.

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Sample ID	Sample source	Rock name
7166	Outcrop or artificial surface exposure	Granite

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
D320662	forest/scattered timberland	mull, humus; Woodchopper;
D320663	forest/scattered timberland	mull, humus; Lillian Ck;
D320666	forest/scattered timberland	mull, humus; Woodchopper;
D320676	forest/scattered timberland	mull, humus; Lillian, buried zone - wall;
D320682	forest/scattered timberland	mull, humus; Lillian;
D320683	forest/scattered timberland	mull, humus; Lillian;

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.