Scientific data near [61.64889,-153.65333]

Search area extends approximately 8.9 km east-west and 18.8 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-2	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
g	Unconsolidated	Glaciers
Kfy	Sedimentary	Flysch
Klqm	Igneous - Plutonic	Quartz monzonite and monzonite
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
Qs	Unconsolidated	Unconsolidated surficial deposits, undivided
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.

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ID	Data type	Description
Lime Hills-Lake Clark	M-D	Lime Hills-Lake Clark 4465 line km with spacing 9.60 km over parts of AK
Southern Alaska Range - N.	M-Dz	Southern Alaska Range - N. 514 line km with spacing 1.60 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

Radiometric ages of rocks from Alaska

Radiometric ages of rocks or minerals sampled from Alaska. The data were collected from professional publications and/or received from researchers and used by permission.

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Record	Type	Comment
68AR222

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
AKA096	sediment
AKA418	sediment
AKA419	sediment
AKA420	sediment
AKA421	sediment
AKA424	sediment
AKA425	sediment
AKA426	sediment
AKA427	sediment
AKA437	sediment
AKA938	rock
C332375	sediment
D284430	concentrate	panned C3 fraction
D284462	concentrate	panned C3 fraction
D284551	concentrate	panned C3 fraction
D284553	concentrate	panned C3 fraction
D285283	sediment
D285312	sediment
D285485	sediment
D285487	sediment
D315583	rock	igneous monzonite
D319711	rock	igneous monzonite
D319712	rock	igneous monzonite
F001085	rock	igneous monzonite
F001098	rock	igneous felsic porphyry
F001099	rock	igneous granodiorite
F001100	rock	igneous granodiorite
F001101	rock	sedimentary siltstone
F001102	rock
F001103	rock
F001104	rock
F001105	rock
F001106	rock
F001107	rock
F001108	rock
F001109	rock
M186207	rock	igneous felsic porphyry
M186208	rock	igneous granodiorite
M186209	rock	igneous granodiorite
M186267	rock	igneous monzonite

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.

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Sample ID	Date collected	Sample type
7004841	1977-09-17	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.

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Sample ID	Date collected	Sample type
3005222	1977-09-17	Natural-pond (or lake in Alaska) 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"

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Sample ID	Rock type	Rock name
AKA938	unspecified
D315583	igneous	unspecified
D319711	igneous	monzonite
D319712	igneous	monzonite
F001085	igneous	monzodiorite
F001098	igneous	felsic porphyry
F001099	igneous	granodiorite
F001100	igneous	granodiorite
F001101	sedimentary	siltstone
M186207	igneous	felsic porphyry
M186208	igneous	intermediate
M186209	igneous	intermediate
M186267	igneous	monzonite

National Geochronological Database

Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.

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Sample ID	Sample source	Rock name
412	Outcrop or artificial surface exposure	Granodiorite

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
AKA096	stream/river	stream
AKA418	stream/river	stream
AKA419	stream/river	stream
AKA420	stream/river	stream
AKA421	stream/river	stream
AKA425	stream/river	stream
AKA426	stream/river	stream
AKA427	stream/river	stream
AKA437	stream/river	stream
D285283	stream/river	stream
D285312	stream/river	stream
D285485	stream/river	stream
D285487	stream/river	stream
D285488	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
D284430	stream/river	conc;; stream
D284462	stream/river	conc;; stream
D284551	stream/river	conc;; stream
D284553	stream/river	conc;; stream
D284554	stream/river	conc;; 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.