Scientific data near [40.88298,-117.44471]

Search area extends approximately 2.2 km east-west and 2.9 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Humboldt	county
Nevada	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Golconda	quadrangle 1:24,000 scale
Winnemucca	quadrangle 1:100,000 scale
Winnemucca	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Lower Humboldt	hydrologic unit
Humboldt	hydrologic accounting unit
Black Rock Desert-Humboldt	hydrologic subregion
Great Basin	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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Unit	State	Lithology
Nolan Belt - Phyllite, schist, shale, thin-bedded limestone, chert, and siltstone	NV	Cambrian
Golconda Terrane - Basinal, volcanogenic, terrigenous clastic, and minor carbonate rocks	NV	Permian to Upper Devonian
Siliciclastic Overlap Assemblage - Conglomerate, sandstone, siltstone, and limestone	NV	Permian to Middle Pennsylvanian
Older alluvium and alluvial fan deposits	NV	Pleistocene and Pliocene
Intermediate silicic ash flow tuff	NV	lower Miocene and Oligocene

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
Winnemucca '69	M-Dz	Winnemucca '69 1599 line km with spacing 1.60 km over parts of NV
Winnemucca	M/R-D	Winnemucca 4747 line km with spacing 4.80 km over parts of NV

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
GB19	Massive sulfide, Cyprus	Paleozoic
GB08	Porphyry Cu	Cretaceous
GB10	Porphyry Cu	Jurassic
GB23	Epithermal vein, Comstock	Tertiary
GB28	Hot-spring Au-Ag	Tertiary
GB30	Sediment-hosted Au	Phanerozoic
GB05	Skarn Au, truncated	Mesozoic - Tertiary
GB15	Polymetallic replacement + skarn Zn-Pb	Mesozoic - Tertiary
GB02	Skarn Cu	Mesozoic - Tertiary
GB09	Porphyry Cu	Tertiary
GB18	Distal disseminated Ag-Au	Mesozoic - Tertiary
GB26	Epithermal vein, quartz-alunite	Tertiary

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
Mojave	Lateral-extensional orogen	Central and Southwest

National geochemical survey database

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

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Sample ID	Material	Source
D-550552	Sediment	Stream, Dry

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
5148553	1976-09-13	Dry stream sediment sample dried at 110øC and sieved to -18 and +35 mesh (less than 1000 and greater than 500 microns).

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
AJX974	sedimentary	shale
AJX975	sedimentary	shale
AKG361	igneous	mafic
AKG362	unidentified
AKG363
AKG364
AKG366	unidentified	quartzite
AKG390	sedimentary	limestone/dolomite
AKG391	igneous	felsic
BBG147
BBG149
BBG150
BBG151
BBG152
BBG154
BBG157
BBG158
BBG160
BBG161
BBG242
BBG244
BBG247
BGL365
BGL367
BGL368
BGL369

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.

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Site name	Development	Commodities
Silver Hill Claims	Occurrence	CU AG PB W ZN
Unnamed Copper Mine	Past Producer	CU PB

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
4355	Outcrop or artificial surface exposure	Granodiorite
4361	Outcrop or artificial surface exposure	Schist

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
C121629	stream/river	NURE-0005598
D550552	surface

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
Cascade Arc	porphyry copper	U.S. part of a continental margin arc that formed during subduction of the Pacific and Juan de Fuca plates beneath western North America
Great Basin Tertiary	porphyry copper	Mid-Tertiary volcanic fields associated with postsubduction extension in the Great Basin
Sierran Arc	porphyry copper	A composite island-continental margin arc that formed during subduction of the Farallon Plate beneath western North America
Western U.S. and Sonoran Desert Jurassic Arc	porphyry copper	U.S. and Mexican parts of a composite island-continental margin arc that formed during subduction of the Farallon Plate beneath western North America

Prospect- and mine-related features on USGS topographic maps

Symbols indicating mining-related features digitized from historical USGS topographic maps in the western part of the conterminous US. Includes prospect pits, mine shafts and adits, quarries, open-pit mines, tailings piles and ponds, gravel and borrow pit

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Feature ID	Feature type	Feature name
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point
Prospect Pit	point