Scientific data near [51.86690,-176.62690]

Search area extends approximately 2.2 km east-west and 3.6 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Aleutians West	Census area
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Adak C-2	1:63,360 Alaska quadrangle
Adak	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Western Aleutian Islands	hydrologic unit
190301	hydrologic accounting unit
Yukon	hydrologic subregion
Alaska	hydrologic region
Areas administered by US Federal agencies

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
bu	Unknown	Bedrock of unknown type or age or areas not mapped
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
Qv	Igneous - Volcanic	Youngest volcanic rocks
Tmv	Igneous - Volcanic	Meshik Volcanics and similar rock units
Tvm	Igneous - Volcanic	Volcanic rocks of the Aleutian Islands and Alaska Peninsula
w		Water
w		Water

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-AP05	Epithermal vein, generic
AK-AP10	Porphyry Cu, BC-Ak type
AK-AP14	Polymetallic vein

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
ADAK14

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
D548220	rock	igneous breccia
D548221	rock	igneous breccia
D548222	rock	igneous andesite
D548223	rock	igneous breccia
D548224	rock	igneous dacite
M106990	mineral
M106991	mineral

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
D548220	igneous	breccia
D548221	igneous	breccia
D548222	igneous	andesite
D548223	igneous	breccia
D548224	igneous	dacite

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
Unnamed	Occurrence	CU 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
Unnamed	Inactive	Au;Cu

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
Alaska Peninsula and Aleutian Islands	porphyry copper	Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands
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.