U.S. Geological Survey Circular 1190 SUSTAINABLE GROWTH IN AMERICA'S HEARTLAND: 3-D GEOLOGIC MAPS AS THE FOUNDATION First printing: October 1999 Second printing: February 2000 Third printing: September 2003 (with a revised map on p. 11)
		This Circular describes the Central Great Lakes Geologic Mapping Coalition. The plans developed by the Coalition provide a new model for State-Federal collaboration in research, information delivery, and outreach, as well opportunities for collaborators to work more closely with the various information-user communities. Although this Circular deals primarily with the geologic foundation for sustainable growth, the program it describes will also serve as the cornerstone in a new integrated science effort that will focus all of the capabilities of the USGS (biology, geography, geology, and hydrology) to address societal needs in the Central Great Lakes region.

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