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Sustainable growth in America's heartland; 3-D geologic maps as the foundation

Circular 1190

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Abstract

The central Great Lakes states of Illinois, Indiana, Michigan, and Ohio constitute one of the most productive and economically important regions in the country--America's heartland. The agriculture, industry, business, recreation, and ecology of these states are based on a common geologic heritage. During the last 1.8 million years, glaciers repeatedly advanced and retreated across the region, leaving behind a thick, complex blanket of intermixed layers of mud, clay, silt, sand, and gravel. Decisionmakers need knowledge of the glacial deposits--their characteristics, three-dimensional distribution, and thickness. To provide this knowledge, a coalition of state and federal geological surveys has formed to conduct the necessary studies in these four states to depict the three-dimensional nature of these glacial deposits and to interpret these data in cooperation with the user community for specific societal needs.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Sustainable growth in America's heartland; 3-D geologic maps as the foundation
Series title:
Circular
Series number:
1190
Edition:
-
Year Published:
1999
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
vi, 17 p. :col. ill., col. maps ;22 x 28 cm.