Metadata

Mineral resources

Mineral Resources Data System (MRDS)

MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, potential resources, and references.

Alaska Resource Data File

Descriptions of mines, prospects, and mineral occurrences in Alaska.

Value of mineral production by state in the US

The value of mineral production by state in the United States. The data represent commodities covered by the Minerals Information Team of the U.S. Geological Survey.

Active mines and mineral plants in the US

Mine plants and operations for commodities monitored by the Minerals Information Team of the USGS. Operations included are those considered active in 2003 and surveyed by the USGS.

Mining claim activity on Federal land in the contiguous US

Number and type of mine claims located on Federal lands and registered with the Bureau of Land Management, by year from 1976 through 2004.

Mining Claims and Prospecting Sites in Alaska

Non-surveyed boundaries of active federal mining claims in Alaska. Each mining claim is represented as an individual region, identified by the casefile serial number which can be linked to background data via the Alaska Land Information System.

World copper smelters

Locations and characteristics of the copper smelters throughout the world.

Geological data

Geology of the conterminous United States

A digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King and Beikman, 1974b). It excludes Alaska and Hawaii.

Geologic map of Colorado

The geologic map of Colorado in ARC/INFO format was digitized from the original scribe sheets used to prepare the geologic map published by Tweto in 1979.

Generalized thermal maturity map of Alaska

Data derived from the 1996 "Generalized Thermal Maturity Map of Alaska" compiled by M.J. Johnsson and D.G. Howell, published in USGS Bulletin 2142. Combines vitrinite reflectance and conodont alteration index in generalized units.

K/Ar ages of materials in the US

A subset of the National Geochemical Database as of 1995. Shows the distribution of published K/Ar and Ar/Ar age determinations in the US. Sample location, rock description, analytical data, age, interpretation, and bibliographic reference are given.

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.

Geochemical data

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.

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.

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.

Geochemistry of igneous rocks in the US

Major element geochemistry of igneous rocks in the US, extracted from the PLUTO database.

Geochemistry of sediments in the US from the PLUTO database

Geochemical data for unconsolidated sediments (stream sediments, lake sediments, etc.) collected in the US and analyzed by the USGS. These data were originally entered in the PLUTO database, which is now merged into the National Geochemistry Database.

Geochemistry of soils in the US from the PLUTO database

Geochemical data for soils collected in the United States and analyzed by the USGS. The data were originally entered into the in-house PLUTO database. This is a subset of DDS-47.

Geochemistry of unconsolidated sediments in the US from the RASS database

Geochemical data for unconsolidated sediments (stream sediments, lake sediments, etc.) collected by USGS personnel and analyzed by USGS. These data were part of the Rock Analysis Storage System and are now merged into the National Geochemistry Database.

Geochemistry of soils in the US from the RASS database

Geochemical data for soils collected by USGS personnel and analyzed by USGS. These data were part of the Rock Analysis Storage System and are now merged into the National Geochemistry Database.

Chemical analyses of soils and other surficial materials of the conterminous US

Geochemistry of soils and other regoliths collected and analyzed by Hans Shacklette and colleagues from 1958 until about 1976.

Geophysical data

Bouguer gravity anomaly grid for the conterminous US

Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the Bouguer gravity anomaly for the conterminous US.

Isostatic residual gravity anomaly grid for the conterminous US

Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the isostatic residual gravity anomaly for the conterminous US.

Aeroradiometric data for Alaska

Data generated by aerial sensing of radiation emanating from the earth's surface in Alaska provides general estimates of the geographic distribution of Uranium, Thorium, and Potassium in surficial and bedrock units throughout this area.

Aeromagnetic data for Alaska

Data from 85 individual aeromagnetic surveys were merged together to produce a single data grid spanning much of Alaska.

Magnetic anomaly map of North America

Airborne remote sensing of the earth's magnetic field over all of North America provides gridded data describing the magnetic anomaly caused by variations in earth materials and structure.