This layer consists of a polygon coverage at 1:500,000 scale with information about bedrock type used in the GCSM. Bedrock is the consolidated material that underlies the soils and surficial deposits; "bedrock type" is defined as type of the uppermost rock layer. Bedrock type is important in assessing an area's susceptibility to groundwater contamination, especially if the bedrock is located close to the land surface. The source for this layer is the set of 1:500,000-scale compilation sheets for a 1981 map of bedrock geology of Wisconsin published by the WGNHS. Because of the generalized nature of the GCSM project, bedrock types were grouped into 4 categories during automation of this data layer.See the usage documentation (https://www.arcgis.com/home/item.html?id=e1e89ae505594459a46407f1daf4ad5d) and the Full report (https://www.arcgis.com/home/item.html?id=fd4d0c43abc04b4ab915586d9a0e89dd) for more information. This dataset was automatically cataloged from the creator's Open Data Portal. In some cases, publication year and bounding coordinates shown here may be incorrect. Additional download formats may be available on the author's website. Please check the 'More details at' link for additional information.
Although this data is being distributed by the American Geographical Society Library at the University of Wisconsin-Milwaukee Libraries, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials.