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Karst in the United States: A Digital Map Compilation and Database
From the site: "This report describes new digital maps delineating areas of the United States, including Puerto Rico and the U.S. Virgin Islands, having karst or the potential...-
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Coal Fields of the Conterminous United States - May 3, 1996
PDF and shapefile maps and data depicting the coal fields of the conterminous United States. Includes coal production data, coal type rankings, coal ages, and other information.-
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Map of Surficial Deposits and Materials in the Eastern and Central United Sta...
USGS map of surficial deposits across the eastern half of the United States. Various downloadable versions of the map are available.-
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USGS Mineral Resources: Isostatic residual gravity anomaly grid for the conte...
From the site: "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...-
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USGS Mineral Resources: Bouguer gravity anomaly grid for the conterminous US
From the site: "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...-
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USGS Water Resources: 1:250,000-scale Hydrologic Units of the United States
From the site: "The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of...-
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USGS Water Resources: Principal Aquifers of the 48 Conterminous United States...
From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as...-
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USGS Water Resources: National Stream Quality Accounting Network and National...
From the site: "This dataset and the accompanying Data Series report was created to assist in analysis and interpretation of water-quality data provided by the U.S. Geological...-
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USGS Groundwater Watch: Climate Response Network
From the site: "The USGS maintains a network of wells to monitor the effects of droughts and other climate variability on groundwater levels. The network consists of a national...-
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USGS Groundwater Watch: Real-Time Groundwater Level Network
From the site: "The Real Time Groundwater Level Network contains water levels and well information from wells with "real time" data transmission instrumentation. This network...-
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USGS Mineral Resources: Geochemistry of water samples in the US from the NURE...
From the site: "Geochemical analyses of water samples throughout the U.S. collected by the hydrogeochemical and stream sediment reconnaissance (HSSR) phase of the National...-
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USGS Mineral Resources: Geochemistry of sediments in the US from the NURE-HSS...
From the site: "Geochemical analyses of sediment samples throughout the U.S. collected by the hydrogeochemical and stream sediment reconnaissance (HSSR) phase of the National...-
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USGS Mineral Resources: Geochemical and mineralogical data for soils of the c...
From the site: "Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km."-
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USGS Mineral Resources: National Geochemical Database: Rock
From the site: "Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of...-
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USGS Mineral Resources: Asbestos mines, prospects, and occurrences in the US
From the site: "Location, type, mineralogy, name, and status for 900 occurrences of asbestiform minerals and fibrous amphiboles."-
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USGS Mineral Resources: Geology of the conterminous United States
From the site: "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)."-
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Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous...
From the site: "This tabular data set represents the mean annual natural groundwater recharge, in millimeters, compiled for every MRB_E2RF1catchment of selected Major River...-
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