Scientific data near [65.05200,-147.34400]

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

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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
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
Fairbanks EM West	M-D	Fairbanks EM West 5385 line km with spacing 0.40 km over parts of AK
Fairbanks 1994	M/EM-D	Fairbanks 1994 4325 line km with spacing 0.40 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

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
LK8-10-11

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
CGL606	rock	metamorphic schist
CGL607	rock	metamorphic schist
CGL608	rock	metamorphic schist
CHA594	concentrate	panned C3 fraction
CHA595	concentrate	panned C3 fraction
CHA612	concentrate	panned C3 fraction
CHB050	mineral
D320173	rock	metamorphic quartzite
MIN109	concentrate	panned C3 fraction

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
CGL606	metamorphic	schist
CGL607	metamorphic	schist
CGL608	metamorphic	schist
D320173	metamorphic	quartzite

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
Bear Creek	Past Producer	AU
Bellows Creek	Prospect	AU SB
Roughneck	Prospect	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
Bellows Creek	Inactive	Au
Roughneck	Inactive	Au

National Geochemical Database: Concentrate

Geochemistry of concentrates 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
CHA594	stream/river	Vetter/Marley claim;; stream
CHA595	stream/river	Vetter/Marley Lode;; stream
CHA612	stream/river	Bear Ck Blueberry Vein;; stream

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.