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Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle, United States and Canada

Summary

The Quaternary Geologic Map of the Lake Superior 4° x 6° Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed during the past 2+ million years, the period that includes all activities of the human species. These materials are at the surface of the earth. They make up the "ground" on which we walk, the "dirt" in which we dig foundations, and the "soil" in which we grow crops. Most of our human activity is related in one way or another to these surface materials that are referred to collectively by many geologists as regolith, the mantle of fragmental and generally [...]

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metadata.xml
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28.59 KB
Reduced-size image of the entire map sheet; 450x350 pixels 32-bit RGB truecolor, 82k bytes.
Reduced-size image of the entire map sheet; 450x350 pixels 32-bit RGB truecolor, 82k bytes.

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Last harvested on Mon Sep 19 11:07:42 MDT 2011 from: http://geo-nsdi.er.usgs.gov/sitemap.xml using the SiteMap

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URL Web http://geo-nsdi.er.usgs.gov/metadata/map-i/1420/NL-16/metadata.xml

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