Scientific data near [61.70000,-147.09000]

Search area extends approximately 2.2 km east-west and 4.7 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Matanuska-Susitna	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Anchorage C-1	1:63,360 Alaska quadrangle
Anchorage	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Middle Copper River	hydrologic unit
190201	hydrologic accounting unit
Northwest 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
g	Unconsolidated	Glaciers
Jum	Igneous - Plutonic	Gabbronorite and other mafic and ultramafic rocks of Hidden terrane
Kumc	Tectonite	McHugh and Uyak Complexes
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Tephi	Igneous - Plutonic	Felsic hypabyssal intrusions
Ttk	Sedimentary	Nearshore and nonmarine sedimentary 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
Talkeetna-Anchorage	M-Dz	Talkeetna-Anchorage 28968 line km with spacing 1.20 km over parts of AK
Anchorage '82	M-D	Anchorage '82 6389 line km with spacing 1.60 km over parts of AK
Anchorage	M/R-D	Anchorage 2172 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-SC25	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
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
CDR035	rock
CDR036	rock
CDR037	rock
CDR038	rock
CDR039	rock
CDR040	rock
CDR106	rock
CDR107	rock
CDR108	rock
CDR109	rock
CDR110	rock
CDR111	rock
CDR112	rock
CDR128	rock
CDR129	rock
CDR130	rock
CFP079	sediment
CFP080	sediment
CFP191	rock	igneous unspecified
CFT705	concentrate	panned C3 fraction
CFT706	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
CDR035	unspecified
CDR036	unspecified
CDR037	unspecified
CDR038	unspecified
CDR039	unspecified
CDR040	unspecified
CDR106	unspecified
CDR107	unspecified
CDR108	unspecified
CDR109	unspecified
CDR110	unspecified
CDR111	unspecified
CDR112	unspecified
CDR128	unspecified
CDR129	unspecified
CDR130	unspecified
CFP191	igneous	unspecified

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
Cc 1-68	Prospect	AU CO CU PB MO NI AG 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
Cc 1-68	Occurrence	Alaska, United States

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
CFP079	stream/river	stream
CFP080	stream/river	stream

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
CFT705	stream/river	stream
CFT706	stream/river	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
Western Alaska Range	porphyry copper	Cretaceous porphyry prospects along the Kahiltna Basin-Peninsula terrane boundary
Eastern Alaska Range and Wrangell Mountains	porphyry copper	Cretaceous (115-105Ma) deposits and prospects along the Nutzotin Basin-Wrangellia terrane boundary; south of the Denali Fault
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.