South Dakota aeromagnetic and gravity maps and data

Online link http://pubs.usgs.gov/of/2002/ofr-02-0341/
Description Aeromagnetic surveys of South Dakota, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Originators Kucks, Robert P. and Hill, Patricia L.
Publication U.S. Geological Survey Open-File Report 02-341

States or counties

South Dakota composite aeromagnetic anomaly map (NE illumination) at simulated flight altitude of 1000 feet above ground
South Dakota composite aeromagnetic anomaly map (NE illumination) at simulated flight altitude of 1000 feet above ground