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The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States

August 18, 2017

The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (https://doi. org/10.5066/F7WH2N65) represents a seamless, spatial database of 48 State geologic maps that range from 1:50,000 to 1:1,000,000 scale. A national digital geologic map database is essential in interpreting other datasets that support numerous types of national-scale studies and assessments, such as those that provide geochemistry, remote sensing, or geophysical data. The SGMC is a compilation of the individual U.S. Geological Survey releases of the Preliminary Integrated Geologic Map Databases for the United States. The SGMC geodatabase also contains updated data for seven States and seven entirely new State geologic maps that have been added since the preliminary databases were published. Numerous errors have been corrected and enhancements added to the preliminary datasets using thorough quality assurance/quality control procedures. The SGMC is not a truly integrated geologic map database because geologic units have not been reconciled across State boundaries. However, the geologic data contained in each State geologic map have been standardized to allow spatial analyses of lithology, age, and stratigraphy at a national scale.

Publication Year 2017
Title The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States
DOI 10.3133/ds1052
Authors John D. Horton, Carma A. San Juan, Douglas B. Stoeser
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Data Series
Series Number 1052
Index ID ds1052
Record Source USGS Publications Warehouse
USGS Organization Central Mineral and Environmental Resources Science Center
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