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This file contains data for selected significant, buried Quaternary sediments, which is one layer of information on this CD-ROM, USGS Digital Data Series #38 (Soller and Packard, 1998). Together, all layers (10 of them) compose the digital version of a 1:1,000,000- scale map of Quaternary deposits (including both glacial and Holocene sediments) compiled for the glaciated area of the United States east of the Rocky Mountains (that is, the area covered by the Laurentide ice sheets). Parts of southern Ontario, areas beneath the Great Lakes, and parts of the submerged eastern seaboard are also included on the map. The paper version of the map is Soller (1993a, b, 1994, 1998, and in press). The map is a regional synthesis...
Categories: Web Site; Tags: 1100 - Geology, 1101 - General, 20005 = Atchison, 20013 = Brown, 20027 = Clay, All tags...
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Geologic mapping, in support of the USGS Omaha-Kansas City Geologic Mapping Project, shows the spatial distribution of artificial-fill, alluvial, eolian, and glacial deposits and bedrock in and near Omaha, Nebraska. Artificial fill deposits are mapped chiefly beneath commercial structures, segments of interstate highways and other major highways, railroad tracks, airport runways, and military facilities, and in landfills and earth fills. Alluvial deposits are mapped beneath flood plains, in stream terraces, and on hill slopes. They include flood-plain and stream-channel alluvium, sheetwash alluvium, and undivided sheetwash alluvium and stream alluvium. Wind-deposited loess forms sheets that mantle inter-stream areas...


    map background search result map search result map Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains: character of selected significant, buried Quaternary sediments Surficial Geologic map of the Greater Omaha Area, Nebraska and Iowa Surficial Geologic map of the Greater Omaha Area, Nebraska and Iowa Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains: character of selected significant, buried Quaternary sediments