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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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The fundamental geologic unit used in the 1995 National Oil and Gas Assessment was the play, which is defined as a set of known or postulated oil and or gas accumulations sharing similar geologic, geographic, and temporal properties, such as source rock, migration pathways, timing, trapping mechanism, and hydrocarbon type. The geographic limit of each play was defined and mapped by the geologist responsible for each province. The play boundaries were defined geologically as the limits of the geologic elements that define the play, such as the limits of the reservoir rock, geologic structures, source rock, and seal lithologies. The only exceptions to this are plays that border the Federal-State water boundary. In...
Categories: Web Site; Tags: 19119 = Lyon, 19149 = Plymouth, 19167 = Sioux, 19193 = Woodbury, 27011 = Big Stone, All tags...


    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 1995 National Oil and Gas Assessment Conventional Plays within the Sioux Arch Province 1995 National Oil and Gas Assessment Conventional Plays within the Sioux Arch Province 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