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Geosciences and Environmental Change Science Center

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. 

News

Friday's Findings - April 26, 2024

Friday's Findings - April 26, 2024

Media Alert: USGS field crews to study avalanche prone regions using airborne techniques near Durango

Media Alert: USGS field crews to study avalanche prone regions using airborne techniques near Durango

In monarch butterfly decline mystery, scientists rule out habitat loss in migration zone

In monarch butterfly decline mystery, scientists rule out habitat loss in migration zone

Publications

Unified 200 kyr paleohydrologic history of the Southern Great Basin: Death Valley, Searles Valley, Owens Valley and the Devils Hole cave

We present a hydroclimate synthesis of the southern Great Basin over the last two glacial-interglacial cycles focused on paleolakes in Death Valley (core DV93-1), Searles Valley (core SLAPP-SRLS17), Owens Valley (core OL92), and the Devils Hole cave. There is close agreement between the occurrence of lakes in Death Valley and the height of the water table in the Devils Hole (50 km east of Death Va
Authors
Tim Lowenstein, Kristian Olson, Brian W. Stewart, David McGee, Justin Stroup, Adam M. Hudson, Kathleen Wendt, Mark Peaple, Sarah Feakins, Ronald Spencer, Tripti Bhattacharya, Steven P. Lundblad, Ronald Litwin

Geochemical and geochronologic evidence for a contiguous northeastern Wyoming Province

The extent and nature of the Wyoming Province, an Archean craton in southwestern Laurentia, are poorly understood due to limited exposure between spatially isolated basement-cored uplifts. This lack of exposure has led to debate about whether the northeastern Wyoming Province is underlain by contiguous Archean crust or Proterozoic rocks and suture zone associated with the Trans-Hudson orogeny. To
Authors
Ian William Hillenbrand, Amy K. Gilmer, Amanda (Kate) Souders, Ilya N. Bindeman

Linking dissolved organic matter composition to landscape properties in wetlands across the United States of America

Wetlands are integral to the global carbon cycle, serving as both a source and a sink for organic carbon. Their potential for carbon storage will likely change in the coming decades in response to higher temperatures and variable precipitation patterns. We characterized the dissolved organic carbon (DOC) and dissolved organic matter (DOM) composition from 12 different wetland sites across the USA
Authors
Martin R. Kurek, Kimberly Wickland, Natalie A. Nichols, Amy M. McKenna, Steven M. Anderson, Mark M. Dornblaser, Nikaan Koupaie-Abyazani, Brett A. Poulin, Sheel Bansal, Jason B. Fellman, Gregory K. Druschel, Emily S. Bernhardt, Robert G.M. Spencer