Three-dimensional bedrock mapping of Grant County at a scale of 1:100,000 provides new baseline information on the distribution of geologic units. Grant County contains Paleozoic bedrock units ranging in age from Silurian to Cambrian....
This 1:500,000 scale map of Wisconsin depicts sediment deposited by glaciers, streams, wind, and other processes during the Quaternary Period (2.58 million years ago to present). The map was made by compiling detailed Quaternary mapping...
Silurian-aged bedrock in eastern Wisconsin is shallow, fractured, and contains groundwater that is susceptible to surface water contamination. Revisions to Wisconsin state rules ATCP50 and NR151 to regulate manure spreading over this...
