Publisher: South Dakota Geological Survey - Yale University Library GeoBlacklight Search Results

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11. Preliminary map of the Precambrian surface of South Dakota

1961. 2018-05-14T19:43:37Z. 2018-05-14T19:43:37Z. Steece, Fred V. South Dakota Geological Survey. English. cartographic image. Public. South Dakota and South Dakota. Precambrian and From 570 million to 5 billion years ago.

12. Vertical-intensity magnetic map of South Dakota : ground magnetometer survey

1967. 2018-05-11T20:00:51Z. 2018-05-11T20:00:51Z. Petsch, Bruno C. (Bruno Carl), 1901-1981. South Dakota Geological Survey. English. cartographic image. Public. South Dakota and South Dakota.