Scientific data near [61.70130,-144.06310]

Search area extends approximately 2.2 km east-west and 4.7 km north-south.

Narrower

Wider

JSON

XML

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
JTrmc	Sedimentary	McCarthy Formation
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
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.

Database Home

ID	Data type	Description
Valdez '78	M-D	Valdez '78 10404 line km with spacing 1.60 km over parts of AK
Valdez	M/R-D	Valdez 2220 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).

Database Home

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-SC25	Placer Au
AK-SC22	Porphyry Cu, BC-Ak type
AK-SC32	Cu (Au) skarn
AK-SC01	Basaltic Cu/Kennecott Cu
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.

Database Home

Domain	Crust type	Region
Wrangellia	Oceanic arc	Alaska

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
7003291		Dry stream sediment sample dried at less than or equal to 100øC (if necessary) and sieved to -80 mesh through stainless steel sieves.
7003805	1977-07-04	Wet natural-pond (or lake in Alaska) 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
3004094	1977-07-04	Natural-pond (or lake in Alaska) water sample acidified to a pH of less than or equal to 1 with reagent-grade nitric acid.

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
Copper Creek	Inactive	Au?

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
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.