Scientific data near [67.88000,-156.31000]

Search area extends approximately 4.5 km east-west and 11.8 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Northwest Arctic	Borough
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Ambler River D-1	1:63,360 Alaska quadrangle
Ambler River	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Upper Noatak River	hydrologic unit
190504	hydrologic accounting unit
South Central 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

Database Home

Map symbol	Lithology	Unit name
Degh	Sedimentary	Hunt Fork Shale
Degn	Sedimentary	Noatak Sandstone

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.

Database Home

ID	Data type	Description
Baird Mtns.-Ambler River	M-Dz	Baird Mtns.-Ambler River 14323 line km with spacing 1.20 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).

Database Home

Tract	Deposit Type	Mineralization age
AK-BR17	Zn-Pb-Ag veins
AK-BR21	Sediment-hosted Cu
AK-BR20	Sandstone hosted Pb-Zn
AK-BR13	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.

Database Home

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.

Database Home

Lab ID	Sample medium	Description
CBT377	sediment
CBT378	sediment
CBT379	sediment
CBZ804	sediment
CCA599	rock	igneous unspecified
CCC330	concentrate	panned C4 fraction

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.

Database Home

Sample ID	Date collected	Sample type
7059151	1978-07-07	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
3058618	1978-07-07	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"

Database Home

Sample ID	Rock type	Rock name
CCA599	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.

Database Home

Site name	Development	Commodities
Ningyoyak Creek, EXP Prospect	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
Ningyoyak Creek, EXP Prospect	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
CBT377	stream/river	stream
CBT378	stream/river	stream
CBT379	stream/river	stream
CBZ804	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
CCC330	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.

Database Home

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.