Central Mineral and Environmental Resources Science Center
Project status is complete. Please check the CMERSC project list for currently active projects.
The objective of the integrated Surveys and Analysis (S&A) projects was to develop national digital datasets categorized in four major themes: geology, mineral deposits, geochemistry, and geophysics, and to integrate, analyze, and interpret these data> These datasets were developed for the Minerals Resources Program and other USGS projects to support a wide variety of studies including mineral resources related research, determining regional background values for chemical elements with known environmental impact, characterize regional mineral districts, defining metallogenic provinces, and studying the relationship between toxic commodities or mining practices and human health. These interpretive studies involved contributions from a wide variety of disciplines and partners.
The successful completion of this project resulted in a standard set of integrated GIS databases and interpretive products that addressed regional and national land-use, mineral development and mineral-environmental issues. These databases were designed to meet needs throughout the Geologic Discipline for decision support and forecasting, and, specifically within the Mineral Resources Program, for mineral-resource and environmental assessment.
Based primarily on previously published state geologic maps, a nationwide integrated geologic database was created suitable for plotting at 1:500,000-scale or smaller. The overall quality of the Mineral Resource Data System was substantially improved, and it provides a reliable source of information about the significant sites of mineral development and sources of mineral supply in the United States. Data sets include a stream-sediment geochemical database for the entire country, suitable for presentation and interpretation at regional and national scales. Newly compiled aeromagnetic, gravity, and aeroradiometric geophysical data for the entire country were made available for presentation and calculation of derivative maps, at a resolution of 1 to 2 km.
All these data are available to USGS researchers and to the public, and allow the rapid assembling of the basic geologic data necessary for scoping, for decision support, and for geologic forecasting. All four Surveys and Analysis projects continuously produced state, regional, and national scale products, commonly resulting from cooperative work with state and other Federal agencies. As national scale datasets became available, products were created that were suitable for release in part through the Mineral Program's "Spatial Data Delivery" Project, and, as appropriate, the National Atlas.
Phone: (303) 236-9817