Great Lakes Geologic Mapping Coalition
Providing the earth science information necessary to help resolve major societal issues in the Great Lakes region is beyond the capability of any single earth science organization. Therefore, the State Geological Surveys of Illinois, Indiana, Michigan, Minnesota, New York, Pennsylvania, Ohio, Wisconsin, and the U.S. Geological Survey have formed the Great Lakes Geologic Mapping Coalition (GLGMC). Its mission is to (1) develop, in partnership with map users, a dynamic database of comprehensive geologic information and to create updatable, three-dimensional (3-D) geologic maps and map products that delineate, in detail, the surficial deposits down to bedrock, and (2) produce, with partner groups, derivative map folios, assessments, and economic analyses that directly support critical decisions concerning natural resources, hazards, and environmental management in the region. The objective of the Coalition is to provide earth science information that can support sound, unbiased, and cost-effective land-use decisions.
The Illinois State Geological Survey actively supports the GLGMC and has advanced its objectives through mapping. The quadrangles listed below and shown on map have been mapped as part of this program. Some of this mapping has received GLCMC funding, and all has helped develop and test mapping tools and techniques that can be shared with other Coalition states.
Please refer to the GLGMC page for more information about the program and to access other states' maps.
Updated 08/13/2010 SLD