Scientific data near [62.15480,-142.83020]

Search area extends approximately 4.5 km east-west and 9.5 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
Nabesna A-4	1:63,360 Alaska quadrangle
Nabesna	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Nabesna-Chisana Rivers	hydrologic unit
190405	hydrologic accounting unit
Southwest 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
Pehls	Sedimentary	Limestone of the Hasen Creek and Eagle Creek Formations
PIPt	Sedimentary	Slana Spur and Station Creek Formations and Tetelna Volcanics
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Twv	Igneous - Volcanic	Wrangell Lava

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
East Alaska Range - Nabesna	M-Dz	East Alaska Range - Nabesna 43452 line km with spacing 1.20 km over parts of AK
Nabesna	M/R-D	Nabesna 2204 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-SC21	Porphyry Cu, BC-Ak type
AK-SC28	Polymetallic vein
AK-SC32	Cu (Au) skarn
AK-SC01	Basaltic Cu/Kennecott Cu
AK-SC18	Synorogenic-synvolcanic Ni-Cu
AK-SC09	Low-sulfide Au-quartz veins
AK-SC22	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
Wrangellia	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
ACK143	sediment
ACK144	sediment
ACK192	sediment
ACK221	sediment
AGG104	rock	igneous unspecified
AGG138	rock	igneous intermediate
AGG139	rock	igneous intermediate
AGG140	sediment
AGG141	sediment
AGG142	rock	igneous intermediate
AGG143	rock	igneous intermediate
AGG144	sediment
AGG145	rock	igneous intermediate
AGG146	rock	igneous intermediate
AGG147	sediment
AGG148	rock	igneous intermediate
AGG150	soil
AGG161	sediment
M123919	mineral
M123920	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
AGG104	igneous	unspecified
AGG138	igneous	intermediate
AGG139	igneous	intermediate
AGG142	igneous	intermediate
AGG143	igneous	intermediate
AGG145	igneous	intermediate
AGG146	igneous	intermediate
AGG148	igneous	intermediate

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 (east of lower Nabesna Glacier)	Occurrence	CU
Unnamed (east of lower Nabesna Glacier)	Occurrence	CU
Unnamed Occurrence	Occurrence	CU
Unnamed Occurrence	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
Unnamed (east of lower Nabesna G...	Inactive	Au;Cu
Unnamed (east of lower Nabesna G...	Inactive	Au;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
ACK143	stream/river	stream
ACK144	stream/river	stream
ACK192	stream/river	stream
ACK221	stream/river	stream
AGG140	stream/river	stream
AGG141	stream/river	stream
AGG144	stream/river	stream
AGG147	stream/river	stream
AGG161	stream/river	stream

National Geochemical Database: Soil

Geochemical analysis of soil samples 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
AGG150	natural exposure/outcrop

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.