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Geologic maps of the Descartes region of the Moon Apollo 16 pre-mission maps Geologic maps of the Descartes region of the Moon Apollo 16 pre-mission maps
The evolution of the Moon’s surface shows three successive stages (Hartmann, 1970). The earliest, from the beginning of the decipherable record to the Imbrian Period, was dominated by frequent large-scale impacts which produced overlapping and interfering craters and giant multi-ringed basin with ejecta blankets. The second stage, extending through most of the Imbrian to early...
Geologic maps of the Apennine-Hadley region of the Moon Apollo 15 pre-mission maps Geologic maps of the Apennine-Hadley region of the Moon Apollo 15 pre-mission maps
This map shows the regional setting of the landing site for the Apollo 15 mission. The area lies approximately 650 km southeast of the center of the Imbrium basin, a large basalt-filled multi-ringed structure in the northwest quadrant of the Moon’s near side. Several arcuate structures surround the Imbrium basin (Hartmann and Kuiper, 1962). The most prominent of these forms the northwest...
Geologic maps of the Taurus-Littrow region of the Moon Apollo 17 pre-mission maps Geologic maps of the Taurus-Littrow region of the Moon Apollo 17 pre-mission maps
The Taurus-Littrow region is mainly a highland area at the juncture of Mare Serenitatis and Mare Tranquillitatis (Scott and Pohn, 1972). Highland materials cover most of the area, forming a group or rugged massifs close to the center of the map and more subdued terrain to the east. The highland units (pItm, IpIh) are probably mostly breccias formed by the Serenitatis impact and pre...
Nutrient and pesticide data collected from the USGS National Water Quality Network and previous networks, 1963-2018 Nutrient and pesticide data collected from the USGS National Water Quality Network and previous networks, 1963-2018
The National Water Quality Network (NWQN) for Rivers and Streams includes 110 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program, National Water-Quality Assessment (NAWQA) Project. The NWQN includes 20 large river coastal sites, 41 large river inland sites, 30 wadeable stream reference sites, 10 wadeable stream urban sites...
Spatial characteristics of Piping Plover nest sites in the U.S. Prairie Pothole Region data, 2000-2019 Spatial characteristics of Piping Plover nest sites in the U.S. Prairie Pothole Region data, 2000-2019
This data is a companion to the manuscript titled "Data integration reveals dynamic and systematic patterns of breeding habitat use by a threatened shorebird". Advances in both remote sensing and analytical tools for spatial data have allowed for the integration of dynamic processes into species distribution models. We developed a spatiotemporal model of breeding habitat use and density...
Mercury stable isotopes in biota, sediment, groundwater, and waste piles, Clear Lake area, Lake County, California, 2019-2022 Mercury stable isotopes in biota, sediment, groundwater, and waste piles, Clear Lake area, Lake County, California, 2019-2022
Samples were collected from Clear Lake, California from 2019-2022 by the U.S. Geological Survey (USGS) California Water Science Center, the USGS Forest and Rangeland Ecosystem Science Center (FRESC), the US Environmental Protection Agency, and EA Engineering Science and Technology Inc. to assess the extent and cycling of legacy mercury (Hg) contamination from Sulphur Bank Mine. Samples...