Study confirms fossil footprints at White Sands National Park date to the Last Glacial Maximum
National Uncrewed Systems Office
Geosciences and Environmental Change Science Center
The Geosciences and Environmental Change Science Center (GECSC) delivers critical science to support economic growth, energy security, and infrastructure resilience. Through geologic mapping and Earth system research, GECSC provides essential data on the nation’s geologic resources, landscape dynamics, and surface processes—informing resource development, hazard mitigation, and land-use planning.
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The Next Fueling Discovery Webinar Takes Place May 29
The Next Fueling Discovery Webinar Takes Place May 29
The Powerhouse of USGS Paleo-research
The Powerhouse of USGS Paleo-research
Trees in cities are beyond shady
Trees in cities are beyond shady
Publications
Methodology for compilation of previously published contour data showing the altitude of the base of Dakota Sandstone on the Colorado Plateau, Arizona, Colorado, New Mexico, and Utah Methodology for compilation of previously published contour data showing the altitude of the base of Dakota Sandstone on the Colorado Plateau, Arizona, Colorado, New Mexico, and Utah
Structure contours and other geologic information from numerous published geologic maps were digitized and compiled into a digital dataset showing the configuration of a single stratigraphic datum, the base of the Dakota Sandstone and its equivalents across the Colorado Plateau. The principal maps compiled in digital form are a series of 1:250,000-scale 1 degree (°) × 2° quadrangle maps...
Relating surface water dynamics in wetlands and lakes to spatial variability in hydrologic signatures Relating surface water dynamics in wetlands and lakes to spatial variability in hydrologic signatures
The retention of surface water in wetlands and lakes can modify the timing, duration, and magnitude of river discharge. However, efforts to characterize the influence of surface water on discharge regimes have been generally limited to small, wetland-dense watersheds. We developed random forest models to explain spatial variability in six hydrologic signatures, reflecting flashiness...
Effects of total suspended solids on photomineralization of dissolved organic matter in the Peace-Athabasca Delta, Canada Effects of total suspended solids on photomineralization of dissolved organic matter in the Peace-Athabasca Delta, Canada
Northern deltas receive chromophoric dissolved organic matter (CDOM) from their watersheds, which can be oxidized to carbon dioxide upon absorption of sunlight (i.e., photomineralized). These deltas also receive total suspended solids (TSS), which may shade sunlight absorption by CDOM, thus limiting photomineralization. To quantify this interaction for the first time, we measured...