Scientific data near [61.64952,-153.03627]

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

Geographic context

Counties, states, countries, continents, or oceans
Bethel	Census area
Alaska	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Lime Hills C-1	1:63,360 Alaska quadrangle
Lime Hills	1:250,000 Alaska quadrangle
Watershed boundaries (USGS hydrologic units)
Farewell Lake	hydrologic unit
190304	hydrologic accounting unit
Yukon	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

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Map symbol	Lithology	Unit name
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
TKg	Igneous - Plutonic	Felsic granitic rocks
TKg	Igneous - Plutonic	Felsic granitic rocks

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
Cook Inlet (Tyonek)	M-D	Cook Inlet (Tyonek) 9258 line km with spacing 9.60 km over parts of AK
Lime Hills-Lake Clark	M-D	Lime Hills-Lake Clark 4465 line km with spacing 9.60 km over parts of AK
Lime Hills	M/R-D	Lime Hills 2220 line km with spacing 9.60 km over parts of AK
Styx	M/EM-D	Styx 5539 line km with spacing 0.40 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-SW17	Cu (Au) skarn
AK-SW18	Zn-Pb skarn
AK-SW12	Porphyry Cu, BC-Ak type
AK-SW16	Polymetallic vein

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
Farewell buried	Back-arc basin	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
AKA593	rock
AKA594	rock
AKA595	rock
AKA764	sediment
AKA765	sediment
AKI146	sediment
AKI147	sediment

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
AKA764	stream/river	stream
AKA765	stream/river	stream
AKI146	stream/river	stream
AKI147	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
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.