Geosciences and Environmental Change Science Center
GECSC researchers conduct multi-purpose geologic mapping and topical scientific studies to address issues concerning geologic, climatic, ecosystem, and land surface changes; human interactions with the environment; and physical, chemical, and biological characterization of the Earth's surface and upper crust.
Bringing together decades of research and mapping, the U.S. Geological Survey just released a geologic map and companion pamphlet featuring the Arkansas River Valley region in north-central Colorado.
A new tool that gives users the most detailed view yet of the world’s mountains is now available from the USGS. And it’s as close as your computer or cellphone.
A new U.S. Geological Survey report describes the below ground geology of the Rio Grande transboundary region of New Mexico and Texas, United States, and northern Chihuahua, Mexico.
Geologic map of the Weldona 7.5′ quadrangle, Morgan County, Colorado
The Weldona 7.5′ quadrangle is located on the semiarid plains of northeastern Colorado, along the South Platte River corridor where the river has incised into Upper Cretaceous Pierre Shale. The Pierre Shale is largely covered by surficial deposits that formed from alluvial, eolian, and hillslope processes operating in concert with environmental...Berry, Margaret E.; Taylor, Emily M.; Slate, Janet L.; Paces, James B.; Hanson, Paul R.; Brandt, Theodore R.
Wetlands inform how climate extremes influence surface water expansion and contraction
Effective monitoring and prediction of flood and drought events requires an improved understanding of how and why surface water expansion and contraction in response to climate varies across space. This paper sought to (1) quantify how interannual patterns of surface water expansion and contraction vary spatially across the Prairie Pothole...Vanderhoof, Melanie; Lane, Charles R.; McManus, Michael L.; Alexander, Laurie C.; Christensen, Jay R.
Anthropogenic impact in the Mayan Lowlands of Petén, Guatemala, during the last 5500 years
Trace and rare earth elements from a Lake Peten Itzá (Guatemala) sediment core depict the geochemical dynamics affecting the lake from ~5500 y BP to the present. This timing encompasses the Preclassic (4000 to 1700 y BP) and Classic Periods (1700-1000 y BP) when thriving Maya societies extensively cleared land for agriculture. We demonstrate that...Battistel, D.; Roman, Marco; Marchetti, A; Kehrwald, Natalie; Radaelli, Marta; Balliana, Eleanora; Toscano, Giuseppina; Barbante, Carlo