Scientific data near [34.78203,-114.72468]

Search area extends approximately 2.2 km east-west and 2.7 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
Needles SW	quadrangle 1:24,000 scale
Needles	quadrangle 1:100,000 scale
Needles	quadrangle 1:250,000 scale
Watershed boundaries (USGS hydrologic units)
Havasu-Mohave Lakes	hydrologic unit
Lower Colorado	hydrologic accounting unit
Lower Colorado	hydrologic subregion
Lower Colorado	hydrologic region

Geology of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format

Database Home

Unit	State	Lithology
Precambrian rocks, undivided, unit 2 (Mojave Desert and Transverse Ranges)	CA	Early Proterozoic to Miocene
Precambrian igneous and metamorphic rock complex	CA	Early Proterozoic to Miocene

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
Needles '80	M-D	Needles '80 26256 line km with spacing 0.80 km over parts of CA-AZ
Needles	M/R-D	Needles 5285 line km with spacing 4.80 km over parts of CA-AZ

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
SB06	Porphyry Cu	Mesozoic - Tertiary
SB27	Epithermal vein, Comstock	Tertiary
SB31	Epithermal vein, Sado	Tertiary
SB32	Epithermal vein, quartz-alunite	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.

Database Home

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.

Database Home

Sample ID	Material	Source
D-508433	Sediment	Stream, Dry
D-508649	Sediment	Stream, Dry
D-508650	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.

Database Home

Sample ID	Date collected	Sample type
5194244	1980-02-22	Stream sediment sample from dry stream, sieved to less than 149 microns (-100 mesh), and dried (if necessary) at less than or equal to 110øC.
5194245	1980-02-22	Stream sediment sample from dry stream, sieved to less than 149 microns (-100 mesh), and dried (if necessary) at less than or equal to 110øC.

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"

Database Home

Sample ID	Rock type	Rock name
M191536	igneous	quartz diorite

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.

Database Home

Site name	Development	Commodities
Unnamed Prospect	Prospect	AU CU
Unnamed Quarry	Past Producer	STN_C
Delape	Occurrence	CU
Unnamed	Past Producer	AU CU

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.

Database Home

Sample ID	Sample source	Sample notes
D508433	surface	NURE sample, <40,>100 mesh fraction
D508649	surface	NURE sample, <100 mesh fraction
D508650	surface	NURE sample, <100 mesh fraction

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
Western Sierra Madre Occidental and Laramide Central	porphyry copper	Belt of Late Cretaceous to middle Eocene (Laramide) magmatic arc rocks in the Sierra Madre Occidental, eastern Mexican Basin and Range, and the Mesa Central of north-central Mexico and extensions north in to the U.S
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

Database Home

Feature ID	Feature type	Feature name
Mine Shaft	point
Quarry	point
Quarry	point
Prospect Pit	point