Scientific data near [68.36310,-157.35100]

Search area extends approximately 2.2 km east-west and 6.0 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
North Slope	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Howard Pass B-3	1:63,360 Alaska quadrangle
Howard Pass	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Upper Colville River	hydrologic unit
190603	hydrologic accounting unit
Southeast 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
Degn	Sedimentary	Noatak Sandstone
MDegk	Sedimentary	Kanayut Conglomerate and Noatak Sandstone, undivided
Mk	Sedimentary	Kayak Shale
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided

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
South NPR '77	M-D	South NPR '77 1931 line km with spacing 9.60 km over parts of AK
Howard Pass and east half of Misheguk Mountain	M-D	Howard Pass and east half of Misheguk Mountain 15548 line km with spacing 1.60 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-BR17	Zn-Pb-Ag veins
AK-BR23	Sedex Zn-Pb
AK-BR21	Sediment-hosted Cu
AK-BR20	Sandstone hosted Pb-Zn
AK-BR08	Mississippi Valley Type
AK-BR13	Placer Au
AK-BR22	Sedex Zn-Pb
AK-BR05	Kipushi Cu-Pb-Zn

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
Brooks-Northslope Mag	Passive margin	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
D362610	concentrate	panned C3 fraction
D362611	concentrate	panned C3 fraction
D362804	rock
D362872	sediment
D362873	sediment
D363011	rock	sedimentary sandstone
D554122	rock	sedimentary unspecified
D554126	rock

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
D362804	unspecified
D363011	sedimentary	sandstone
D554122	sedimentary	unspecified
D554126	unspecified
D566611	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
Ipnavik River West	Occurrence	PB AG ZN

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 (near Ipnavik River)	Probably inactive	Ag;Cu;Pb;Zn

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
D362872	stream/river	stream
D362873	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
D362610		heavy mineral concentrates;
D362611		heavy mineral concentrates;

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
Brooks Range	porphyry copper	Proterozoic, Devonian, or Cretaceous grantitic intrusions in the Brooks Range.
Chukotka	porphyry copper	Early to Late Cretaceous volcanic and intrusive rocks composing island-arc, continental-arc, and collisional magmatic belts associated with the Chukotka microcontinent.
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.