Scientific data near [35.05549,-116.62958]

Search area extends approximately 4.5 km east-west and 5.4 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
San Bernardino	county
California	state
United States	country
North America	continent
Land	continent
Map quadrangles, from USGS or Canadian NTS
Alvord Mountain West	quadrangle 1:24,000 scale
Soda Mountains	quadrangle 1:100,000 scale
Trona	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Mojave	hydrologic unit
Northern Mojave	hydrologic accounting unit
Northern Mojave-Mono Lake	hydrologic subregion
California	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
Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges)	CA	Permian to Tertiary; most Mesozoic
pre-Cenozoic metasedimentary and metavolcanic rocks undivided	CA	Early Proterozoic to Cretaceous
Quaternary alluvium and marine deposits	CA	Pleistocene to Holocene
Tertiary volcanic flow rocks, unit 16 (Northern Mojave Desert)	CA	Tertiary (4-22 Ma)

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
Fort Irwin	M-D	Fort Irwin 2735 line km with spacing 0.53 km over parts of CA
Trona	M/R-D	Trona 5157 line km with spacing 4.80 km over parts of CA
Soda Lakes	M-D	Soda Lakes 5458 line km with spacing 0.80 km over parts of CA

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
SB06	Porphyry Cu	Mesozoic - Tertiary
SB27	Epithermal vein, Comstock	Tertiary
SB32	Epithermal vein, quartz-alunite	Tertiary
SB31	Epithermal vein, Sado	Tertiary
SB36	Hot-spring Au-Ag	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
C-164019	Sediment	Soil
C-196378	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
5212297	1979-05-20	Soil sample sieved to greater than 149 microns (+100 mesh) but less than 1,000 microns (-18 mesh).
5212298	1979-05-20	Soil sample sieved to less than 149 microns (-100 mesh).
5212299	1979-05-20	Talus sample.
5212300	1979-05-20	Talus sample.

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
Alvord	Past Producer	AU CU PB FE
Alvord Mine	Past Producer	AU CU PB
Alvord Mountain Limestone Pfizer	Prospect	LST CA

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
C164019	surface
C196378	stream/river	STREAM IS IN ALLUVIUM W/GRANITIC & METAMORPHICS; stream
D198069	alluvium	sand; clastic; lithic; SEIVED DRAINAGE SEDIMENT (< 500 UM). AEOLIAN SEDIMENT PRESENT; alluvial fan
D198073	stream/river	sand; clastic; lithic; SEIVED DRAINAGE SEDIMENT (< 500 UM); 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
D202720	stream/river	sand; clastic; lithic; DRAINAGE SEDIMENT HEAVY MINERAL CONCENTRATE; stream
D203034	stream/river	sand; clastic; lithic; DRAINAGE SEDIMENT HEAVY MINERAL CONCENTRATE; 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
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
Mine Shaft	point
Mine Shaft	point
Mine Shaft	point
Prospect Pit	point
Mine Shaft	point	Alvord Mine
Adit	point	Alvord Mine
Prospect Pit	point
Adit	point
Prospect Pit	point