Scientific data near [55.95916,-159.81694]

Search area extends approximately 1.1 km east-west and 2.0 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Lake and Peninsula	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Stepovak Bay D-6	1:63,360 Alaska quadrangle
Stepovak Bay	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Cold Bay	hydrologic unit
190301	hydrologic accounting unit
Yukon	hydrologic subregion
Alaska	hydrologic region
Areas administered by US Federal agencies
Alaska Peninsula National Wildlife Refuge	National Wildlife Refuge
National Wildlife Refuge FWS	Type of land area
FWS	Federal land areas administered by FWS

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
Tms	Sedimentary	Tachilni, Bear Lake, Chuniksak, Nevidiskov, and Chirikof Formations

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-AP11	Placer Au
AK-AP13	Polymetallic vein
AK-AP04	Epithermal vein, generic
AK-AP09	Porphyry Cu, BC-Ak type

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
Peninsular-Talkeetna	Oceanic arc	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
CFM583	rock	sedimentary sandstone
CFM584	rock	igneous andesite
CFM585	rock	igneous basalt
CFM586	rock	igneous basalt

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
CFM583	sedimentary	unspecified
CFM584	igneous	unspecified
CFM585	igneous	unspecified
CFM586	igneous	unspecified

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.