This map portrays our current geologic understanding of the temporal and geographic distribution of units within major Precambrian terranes and of the Phanerozoic strata. The state wide data is mapped at a scale of 1:500,000 and the county bedrock datasets (Becker, Brown, Meeker, Isanti, Cass) are mapped at a 1:100,000 scale. A Story Map displaying this data can be found at Minnesota's Bedrock Geology story map.The western part of the mapped Precambrian terrane in the state wide dataset is inferred largely from geophysical maps, anchored locally by drilling. In many places, contacts are drawn between units of the same or similar apparent rock type (and same unit label); these are recognized as geometrically distinct, though geophysically or lithologically similar. Digital files for the state wide bedrock (http://hdl.handle.net/11299/101466) corresponding to this map allow removal of Cretaceous, Paleozoic, and some parts of Mesoproterozoic strata to reveal an interpretation of the underlying Precambrian bedrock.

For additional state wide data see: (http://hdl.handle.net/11299/98043) which contains files associated with Bedrock Topography, Depth to Bedrock, and locations of Outcrop and Geochronologic analyses. Individual county bedrock can be found and downloaded at the University of Minnesota's Digital Conservancy.

This map portrays our current geologic understanding of the temporal and geographic distribution of units within major Precambrian terranes and of the Phanerozoic strata. The state wide data is mapped at a scale of 1:500,000. A Story Map displaying this data can be found at Minnesota's Bedrock Geology story map.The western part of the mapped Precambrian terrane in the state wide dataset is inferred largely from geophysical maps, anchored locally by drilling. In many places, contacts are drawn between units of the same or similar apparent rock type (and same unit label); these are recognized as geometrically distinct, though geophysically or lithologically similar. Digital files for the state wide bedrock (http://hdl.handle.net/11299/101466) corresponding to this map allow removal of Cretaceous, Paleozoic, and some parts of Mesoproterozoic strata to reveal an interpretation of the underlying Precambrian bedrock. For additional state wide data see: (http://hdl.handle.net/11299/98043) which contains files associated with Bedrock Topography, Depth to Bedrock, and locations of Outcrop and Geochronologic analyses. Individual county bedrock can be found and downloaded at the University of Minnesota's Digital Conservancy.