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USGS is a primary source of geographic information system (GIS) data. Our data and information is presented in spatial and geographic formats, including The National Map, Earth Explorer, GloVIS, LandsatLook, and much more. Explore GIS Data Maps. 

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Cross sections of Lower Ordovician carbonate depositional lithofacies and Mississippi Valley-type zinc-and iron-sulfide mineralization in the Caufield district, east-central part of Harrison 1 degree by 2 degrees Quadrangle, Arkansas and Missouri

As part of the Harrison 1° X 2° CUSMAP study, we examined eight drill cores from the Caulfield district (see index map) in south-central Missouri. This report presents the results of the core study and cross sections and correlation diagrams compiled from the core data (cross sections A-A' and B-B' and correlation diagrams A-A' and B-B').

Filtered magnetic anomaly maps of Illinois

No abstract available.

Filtered magnetic anomaly maps of Missouri

No abstract available.