Scientific data near [61.65320,-144.12630]

Search area extends approximately 4.5 km east-west and 9.4 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Valdez-Cordova	Census area
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Valdez C-1	1:63,360 Alaska quadrangle
Valdez	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
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
Jnk	Sedimentary	Naknek Formation and Kotsina Conglomerate
JTrmc	Sedimentary	McCarthy Formation
PIPsm	Metamorphic	Strelna Metamorphics and related rocks
PIPsm	Metamorphic	Strelna Metamorphics and related rocks
Trcnk	Sedimentary	Chitistone and Nizina Limestones and Kamishak Formation
Trn	Igneous - Volcanic	Nikolai and Goon Dip Greenstones and equivalent 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
Valdez '78	M-D	Valdez '78 10404 line km with spacing 1.60 km over parts of AK
Valdez	M/R-D	Valdez 2220 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-SC05	Cu-Ag quartz veins
AK-SC16	Kuroko massive sulfide
AK-SC23	Porphyry Cu, BC-Ak type
AK-SC33	Cu (Au) skarn
AK-SC31	Cu (Au) skarn
AK-SC21	Porphyry Cu, BC-Ak type
AK-SC28	Polymetallic vein
AK-SC25	Placer Au
AK-SC22	Porphyry Cu, BC-Ak type
AK-SC32	Cu (Au) skarn
AK-SC01	Basaltic Cu/Kennecott Cu
AK-SC29	Polymetallic vein
AK-SC18	Synorogenic-synvolcanic Ni-Cu
AK-SC09	Low-sulfide Au-quartz veins

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
Wrangellia	Oceanic arc	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
79ABs065B
79ABs066

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
CCR905	concentrate	panned C4 fraction
CCR906	concentrate	panned C4 fraction
CCT095	sediment
CCT096	sediment
CCT374	rock	sedimentary argillite
CEC876	rock	metamorphic greenstone
CEC877	rock	igneous dacite
CEC878	rock	sedimentary limestone
CEC879	rock	igneous diorite
CEC880	rock	metamorphic greenstone
CEC881	rock	sedimentary chert
CEC882	rock	igneous greenstone
CEC883	rock	metamorphic greenstone

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
CCT374	unspecified
CEC876	igneous	greenstone
CEC877	igneous	dacite
CEC878	sedimentary	limestone
CEC879	igneous	diorite
CEC880	igneous	greenstone
CEC881	unspecified	chert-jasperoid
CEC882	igneous	greenstone
CEC883	igneous	greenstone

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
Hubbard Elliott Mine	Past Producer	CU AU AG
Albert Johnson Prospect	Occurrence	CU
Elizabeth Prospect	Occurrence	CU
Elliott Creek	Past Producer	CU AU
Mary Ellen Prospect	Occurrence	CU AU
Guthrie Prospect	Occurrence	CU
Leland and Lawton Claims	Occurrence	CU

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
Albert Johnson	Inactive	Cu
Guthrie	Inactive	Cu
Leland; Lawton; Hubbard and Elli...	Inactive	Cu
Cliff; Fog	Inactive	Cu

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
CCT095	stream/river	stream
CCT096	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
CCR905	stream/river	C2+C3 fractions combined;; stream
CCR906	stream/river	C2+C3 fractions combined;; 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
Skolai Arc - Eastern Alaska	porphyry copper	Late Paleozoic Skolai Arc of the Wrangellia terrane; 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.