Scientific data near [67.20000,-156.50000]

Search area extends approximately 17.8 km east-west and 46.0 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 A-2	1:63,360 Alaska quadrangle
Ambler River	1:250,000 Alaska quadrangle
Ambler River A-1	1:63,360 Alaska quadrangle
Ambler River	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Middle Kobuk River	hydrologic unit
190503	hydrologic accounting unit
South Central Alaska	hydrologic subregion
Alaska	hydrologic region

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
Das	Metamorphic	Bimodal metavolcanic rocks
DPxacs	Metamorphic	Calcareous schist of Brooks Range
DPxacs	Metamorphic	Calcareous schist of Brooks Range
DPxaqm	Metamorphic	Quartz-mica schist of the Brooks Range
DPxaqm	Metamorphic	Quartz-mica schist of the Brooks Range
MzPzmb	Metamorphic	Metabasite
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
TrPzgp	Metamorphic	Metagraywacke and phyllite

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-BR07	Kuroko massive sulfide
AK-BR04	Low-sulfide Au-quartz veins
AK-BR09	Mississippi Valley Type
AK-BR13	Placer Au
AK-BR06	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.

Database Home

Domain	Crust type	Region
Brooks Range	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
BGF008	sediment
BGF009	sediment
BGF010	sediment
BGF020	sediment
BGF028	sediment
BGF032	sediment
BGF035	sediment
BGF036	sediment
BGF039	sediment
BGF044	sediment
BGF046	sediment
BGF047	sediment
BGF050	sediment
BGF052	sediment
BGF054	sediment
BGF057	sediment
BGF060	sediment
BGF068	sediment
BGF069	sediment
BGF070	sediment
BGF073	sediment
BGF075	sediment
BGF078	sediment
BGF082	sediment
BGF085	sediment
BGF089	sediment
BGF103	sediment
EAA923	sediment
EAA951	sediment
EAA959	sediment
M140023	rock	metamorphic metarhyolite
M140024	rock	metamorphic metarhyolite
M140025	rock	metamorphic metarhyolite
M140026	rock	metamorphic metarhyolite
M140027	rock	metamorphic metarhyolite
M140028	rock	metamorphic metarhyolite
M140029	rock	metamorphic metarhyolite
M140030	rock	metamorphic metarhyolite
W188385	rock	metamorphic metasediment
W188386	rock	metamorphic schist
W188387	rock	metamorphic schist
W188388	rock	metamorphic schist
W188389	rock	metamorphic schist
W188391	rock	metamorphic schist
W188394	rock	metamorphic schist
W188395	rock	metamorphic schist
W188396	rock	metamorphic schist
W188399	rock	metamorphic greenstone
W188401	rock	metamorphic greenstone
W188402	rock	metamorphic greenschist
W188404	rock	metamorphic metasediment
W188405	rock	metamorphic greenstone
W188406	rock	metamorphic schist
W188417	rock	metamorphic schist
W188422	rock	metamorphic schist
W188423	rock	metamorphic schist
W188424	rock	metamorphic greenstone
W188425	rock	metamorphic greenstone

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
7058461	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058462	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058465	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058466	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058467	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058468	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058507	1978-06-29	Wet stream sediment sample dried at less than or equal to 100øC and sieved to -100 mesh through stainless steel sieves.
7058508	1978-06-29	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
3057932	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057933	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057936	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057937	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057938	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057939	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057979	1978-06-29	Stream water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.
3057980	1978-06-29	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
M140023	metamorphic	metarhyolite
M140024	metamorphic	metarhyolite
M140025	metamorphic	metarhyolite
M140026	metamorphic	metarhyolite
M140027	metamorphic	metarhyolite
M140028	metamorphic	metarhyolite
M140029	metamorphic	metarhyolite
M140030	metamorphic	metarhyolite
W188385	metamorphic	metasediment
W188386	metamorphic	schist
W188387	metamorphic	schist
W188388	metamorphic	schist
W188389	metamorphic	schist
W188391	metamorphic	schist
W188394	metamorphic	schist
W188395	metamorphic	schist
W188396	metamorphic	schist
W188399	metamorphic	greenstone
W188401	metamorphic	greenstone
W188402	metamorphic	greenschist
W188404	metamorphic	metasediment
W188405	metamorphic	greenstone
W188406	metamorphic	schist
W188417	metamorphic	schist
W188422	metamorphic	schist
W188423	metamorphic	schist
W188424	metamorphic	greenstone
W188425	metamorphic	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.

Database Home

Site name	Development	Commodities
Dead Creek	Prospect	CU PB ZN AG
Dead Creek	Prospect	CU PB AG ZN
SK	Prospect	CU PB ZN
Kogoluktuk West Lode	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
Dead Creek; Steptoes	Inactive	Cu;Pb;Zn
SK	Inactive	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.

Database Home

Sample ID	Sample source	Sample notes
BGF008	stream/river	sample collected by Alaska DGGS;; stream
BGF009	stream/river	sample collected by Alaska DGGS;; stream
BGF010	stream/river	sample collected by Alaska DGGS;; stream
BGF020	stream/river	sample collected by Alaska DGGS;; stream
BGF028	stream/river	sample collected by Alaska DGGS;; stream
BGF032	stream/river	sample collected by Alaska DGGS;; stream
BGF035	stream/river	sample collected by Alaska DGGS;; stream
BGF036	stream/river	sample collected by Alaska DGGS;; stream
BGF039	stream/river	sample collected by Alaska DGGS;; stream
BGF044	stream/river	sample collected by Alaska DGGS;; stream
BGF046	stream/river	sample collected by Alaska DGGS;; stream
BGF047	stream/river	sample collected by Alaska DGGS;; stream
BGF050	stream/river	sample collected by Alaska DGGS;; stream
BGF052	stream/river	sample collected by Alaska DGGS;; stream
BGF054	stream/river	sample collected by Alaska DGGS;; stream
BGF057	stream/river	sample collected by Alaska DGGS;; stream
BGF060	stream/river	sample collected by Alaska DGGS;; stream
BGF068	stream/river	sample collected by Alaska DGGS;; stream
BGF069	stream/river	sample collected by Alaska DGGS;; stream
BGF070	stream/river	sample collected by Alaska DGGS;; stream
BGF073	stream/river	sample collected by Alaska DGGS;; stream
BGF075	stream/river	sample collected by Alaska DGGS;; stream
BGF078	stream/river	sample collected by Alaska DGGS;; stream
BGF082	stream/river	sample collected by Alaska DGGS;; stream
BGF085	stream/river	sample collected by Alaska DGGS;; stream
BGF089	stream/river	sample collected by Alaska DGGS;; stream
BGF103	stream/river	sample collected by Alaska DGGS;; stream
EAA923	stream/river	sample collected by Alaska DGGS;; stream
EAA951	stream/river	sample collected by Alaska DGGS;; stream
EAA959	stream/river	sample collected by Alaska DGGS;; 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
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
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.