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Surficial geologic map of the southwest Memphis Quadrangle, Shelby County, Tennessee, and Crittenden County, Arkansas Surficial geologic map of the southwest Memphis Quadrangle, Shelby County, Tennessee, and Crittenden County, Arkansas
This map is one of seven 1:24,000-scale (7.5-minute) quadrangle maps of the surficial geology of the Memphis, Tennessee, area--part of a series of urban hazard maps. Wind-deposited silt and clayey silt (loess) is the predominant surficial deposit in this quadrangle. The loess was deposited as dust during the last major continental glaciation of the region and it covers the upland to
Topographic Map of the Northeast Ascraeus Mons Region of Mars - MTM 500k 15/257E OMKT Topographic Map of the Northeast Ascraeus Mons Region of Mars - MTM 500k 15/257E OMKT
This map is part of a series of topographic maps of areas of special scientific interest on Mars. The topography was compiled photogrammetically using Viking Orbiter stereo image pairs. The contour interval is 250 meters. Horizontal and vertical control was established using the USGS Mars Digital Image Model 2.0 (MDIM 2.0) and data from the Mars Orbiter Laser Altimeter (MOLA).
Topographic Map of the Northwest Ascraeus Mons Region of Mars - MTM 500k 15/252E OMKT Topographic Map of the Northwest Ascraeus Mons Region of Mars - MTM 500k 15/252E OMKT
This map is part of a series of topographic maps of areas of special scientific interest on Mars. The topography was compiled photogrammetically using Viking Orbiter stereo image pairs. The contour interval is 250 meters. Horizontal and vertical control was established using the USGS Mars Digital Image Model 2.0 (MDIM 2.0) and data from the Mars Orbiter Laser Altimeter (MOLA).
Topographic Map of the Southeast Ascraeus Mons Region of Mars - MTM 500k 10/257E OMKT Topographic Map of the Southeast Ascraeus Mons Region of Mars - MTM 500k 10/257E OMKT
This map is part of a series of topographic maps of areas of special scientific interest on Mars. The topography was compiled photogrammetically using Viking Orbiter stereo image pairs. The contour interval is 250 meters. Horizontal and vertical control was established using the USGS Mars Digital Image Model 2.0 (MDIM 2.0) and data from the Mars Orbiter Laser Altimeter (MOLA).
Topographic Map of the Southwest Ascraeus Mons Region of Mars - MTM 500k 10/252E OMKT Topographic Map of the Southwest Ascraeus Mons Region of Mars - MTM 500k 10/252E OMKT
This map is part of a series of topographic maps of areas of special scientific interest on Mars. The topography was compiled photogrammetically using Viking Orbiter stereo image pairs. The contour interval is 250 meters. Horizontal and vertical control was established using the USGS Mars Digital Image Model 2.0 (MDIM 2.0) and data from the Mars Orbiter Laser Altimeter (MOLA).
Landsat yesterday and today: An American vision and an old challenge Landsat yesterday and today: An American vision and an old challenge
Since the late 1960s, the United States government has invested more than $1 billion in designing, launching, and operating the Landsat (land satellite) series of Earth-observing satellites. Global change researchers, geologists, and environmental scientists have used images gathered by the satellites for purposes ranging from human health research, energy exploration, and pollution...