Scientific data near [61.49220,-142.31140]

Search area extends approximately 17.8 km east-west and 37.3 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
McCarthy B-4	1:63,360 Alaska quadrangle
McCarthy	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Chitina River	hydrologic unit
190201	hydrologic accounting unit
Northwest Alaska	hydrologic subregion
Alaska	hydrologic region
Areas administered by US Federal agencies
Wrangell-Saint Elias Wilderness	Wilderness
Wilderness NPS	Type of land area
NPS	Federal land areas administered by NPS
Wrangell-Saint Elias National Park and Preserve	National Park
National Park NPS	Type of land area
NPS	Federal land areas administered by NPS

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
Khnl	Sedimentary	Herendeen Formation and similar units
Km	Sedimentary	Matanuska Formation and correlative rocks
Peh	Sedimentary	Eagle Creek and Hasen 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
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
QTv	Igneous - Volcanic	Young volcanic rocks, undifferentiated
Trcnk	Sedimentary	Chitistone and Nizina Limestones and Kamishak Formation
Trn	Igneous - Volcanic	Nikolai and Goon Dip Greenstones and equivalent rocks
Trn	Igneous - Volcanic	Nikolai and Goon Dip Greenstones and equivalent rocks
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
McCarthy	M-D	McCarthy 11748 line km with spacing 1.60 km over parts of AK
Mc Carthy	M/R-D	Mc Carthy 1971 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

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.

Database Home

Lab ID	Sample medium	Description
ACF255	sediment
ACF256	sediment
ACF257	sediment
ACF258	sediment
ACF259	sediment
ACF260	sediment
ACF261	sediment
ACF262	sediment
ACF263	sediment
ACF278	sediment
ACF279	sediment
ACF280	sediment
ACF281	sediment
ACF282	sediment
ACF283	sediment
ACF284	sediment
ACF375	sediment
ACF378	sediment
ACF379	sediment
ACF380	sediment
ACI016	rock
ACI079	rock
ACI095	rock
ACI096	rock
ACI097	rock
ACI098	rock
ACI104	rock
ACI107	rock
ACI108	rock
ACI110	rock
ACI116	rock
ACI118	rock
ACI119	rock
ACI128	rock
ACI129	rock
ACI130	rock
ACI131	rock
ACI132	rock
ACI134	rock
ACI135	rock
ACI145	rock
ACI155	rock
ACI156	rock
C164886	sediment
C165046	sediment
C165485	sediment
CAK287	sediment
CAK288	sediment
CAW747	sediment
CAW748	sediment
CAW749	sediment
CAW750	sediment
CBA086	concentrate	panned C1 fraction
CBA088	concentrate	panned C1 fraction
CBA089	concentrate	panned C1 fraction
CBA090	concentrate	panned C1 fraction
CBA091	concentrate	panned C1 fraction
CBA878	concentrate	panned C2 fraction
CBA880	concentrate	panned C2 fraction
CBA881	concentrate	panned C2 fraction
CBA882	concentrate	panned C2 fraction
CBA883	concentrate	panned C2 fraction
CBJ093	concentrate	panned C3 fraction
CBJ095	concentrate	panned C3 fraction
CBJ096	concentrate	panned C3 fraction
CBJ097	concentrate	panned C3 fraction
CBJ098	concentrate	panned C3 fraction
M105697	rock	igneous basalt
M105714	rock	igneous gabbro
M105715	rock	igneous gabbro

National geochemical survey database

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

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Sample ID	Material	Source
C-164886	Sediment	Stream, Wet
C-165046	Sediment	Stream, Wet
C-165485	Sediment	Stream, Wet

Geochemistry of stream sediments in the US from the NURE-HSSR database

National-scale geochemical analysis of stream sediments and soils in the US collected and analyzed under the National Uranium Resource Evaluation program.

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Sample ID	Date collected	Sample type
7002677	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002678	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002679	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002680	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002681	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002682	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002683	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002684	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002688	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002689	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7002690	1978-07-04	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.

Geochemistry of water samples in the US from the NURE-HSSR database

National-scale geochemical analysis of water samples in the US collected and analyzed under the National Uranium Resource Evaluation program.

Database Home

Sample ID	Date collected	Sample type
3002786	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002787	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002788	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002789	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002790	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002791	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002792	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002796	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3002797	1978-07-04	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.

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
ACI016	unspecified
ACI079	unspecified
ACI095	unspecified
ACI096	unspecified
ACI097	unspecified
ACI098	unspecified
ACI103	unspecified
ACI104	unspecified
ACI107	unspecified
ACI108	unspecified
ACI110	unspecified
ACI116	unspecified
ACI118	unspecified
ACI119	unspecified
ACI128	unspecified
ACI129	unspecified
ACI130	unspecified
ACI131	unspecified
ACI132	unspecified
ACI134	unspecified
ACI135	unspecified
ACI145	unspecified
ACI155	unspecified
ACI156	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
Unnamed (in Contact Gulch)	Prospect	CU
Radovan	Prospect	AG CU
Nelson	Past Producer	CU AG
Contact Gulch	Prospect	CU
Nelson	Past Producer	CU AG
Unnamed (west of upper Toby Creek)	Occurrence	CU
Houghton Alaska Chitistone R.	Prospect	CU
Toby Creek	Prospect	CU
Unnamed (near Toby Creek)	Occurrence	CU
Houghton Alaska	Prospect	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.

Database Home

Site	Status	Commodities
Houghton Alaska	Inactive	Cu
Unnamed (near Contact Gulch)	Inactive	Cu
Unnamed (in Contact Gulch)	Inactive	Cu
Unnamed (near Toby Creek)	Inactive	Cu
Radovan; Greenstone claims	Inactive	Ag;Cu
Unnamed (west of upper Toby Cree...	Inactive	Cu
Nelson	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.

Database Home

Sample ID	Sample source	Sample notes
ACF255	stream/river	stream
ACF256	stream/river	stream
ACF257	stream/river	stream
ACF258	stream/river	stream
ACF259	stream/river	stream
ACF260	stream/river	stream
ACF261	stream/river	stream
ACF262	stream/river	stream
ACF263	stream/river	stream
ACF278	stream/river	stream
ACF279	stream/river	stream
ACF280	stream/river	stream
ACF281	stream/river	stream
ACF282	stream/river	stream
ACF283	stream/river	stream
ACF284	stream/river	stream
ACF375	stream/river	stream
ACF378	stream/river	stream
ACF379	stream/river	stream
ACF380	stream/river	stream
C164886	surface
C165046	surface
C165485	surface
CAK287	stream/river	stream
CAK288	stream/river	stream
CAW747	stream/river	stream
CAW748	stream/river	stream
CAW749	stream/river	stream
CAW750	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.

Database Home

Sample ID	Sample source	Sample notes
CBA086	stream/river	stream
CBA088	stream/river	stream
CBA089	stream/river	stream
CBA090	stream/river	stream
CBA091	stream/river	stream
CBA878	stream/river	stream
CBA880	stream/river	stream
CBA881	stream/river	stream
CBA882	stream/river	stream
CBA883	stream/river	stream
CBJ093	stream/river	stream
CBJ095	stream/river	stream
CBJ096	stream/river	stream
CBJ097	stream/river	stream
CBJ098	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
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.