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Bedrock Geology of Wisconsin, Northeast Sheet
Types of bedrock, formation names, major faults, and time period of formation.- 
  
  
Bedrock Geology of Wisconsin, Northeast Sheet [GIS data]
1984
GIS Data: GeMS file geodatabase and metadata
 
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Bedrock Geologic Map of Wisconsin
Describes the types of rocks found throughout the state by age and explains how to interpret the accompanying cross section.