Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Sediment cores from Twin Butte Lake, Yellowstone National Park, being analyzed in the laboratory. (a) Photo of a freshly split core that exhibits a transition in lake productivity (grey sediment on bottom to dark organic rich sediment on top). One half of the core is scanned for multiple types of data and sampled while the other half of the core is archived.
Sediment cores from Twin Butte Lake, Yellowstone National Park, being analyzed in the laboratory. (a) Photo of a freshly split core that exhibits a transition in lake productivity (grey sediment on bottom to dark organic rich sediment on top). One half of the core is scanned for multiple types of data and sampled while the other half of the core is archived.
Lake coring operations at Twin Buttes Lake, Yellowstone National Park, (a) Assembled lake coring platform being launched into the Twin Buttes Lake and (b) anchored in the core sampling location. Photos taken under NPS research permit YELL-2022-SCI-0009 by S. Hurwitz (a) and L. Harrison (b) in August 2022.
Lake coring operations at Twin Buttes Lake, Yellowstone National Park, (a) Assembled lake coring platform being launched into the Twin Buttes Lake and (b) anchored in the core sampling location. Photos taken under NPS research permit YELL-2022-SCI-0009 by S. Hurwitz (a) and L. Harrison (b) in August 2022.
Cathodoluminescence images generated by the interaction of electromagnetic radiation ranging in energy from ultraviolet to near infrared with sectioned and polished zircon mineral grains from an Archean-age rock found in the Yellowstone region.
Cathodoluminescence images generated by the interaction of electromagnetic radiation ranging in energy from ultraviolet to near infrared with sectioned and polished zircon mineral grains from an Archean-age rock found in the Yellowstone region.
Scanning electron microscopy (SEM) images of the Colloidal Pool colloids (images are a combination of backscatter and secondary electrons). The colloids are a mixture of clay particles, hydrated silica, alunite, and diatoms.
Scanning electron microscopy (SEM) images of the Colloidal Pool colloids (images are a combination of backscatter and secondary electrons). The colloids are a mixture of clay particles, hydrated silica, alunite, and diatoms.
Sediment cores from Twin Butte Lake, Yellowstone National Park, being analyzed in the laboratory. (a) Photo of a freshly split core that exhibits a transition in lake productivity (grey sediment on bottom to dark organic rich sediment on top). One half of the core is scanned for multiple types of data and sampled while the other half of the core is archived.
Sediment cores from Twin Butte Lake, Yellowstone National Park, being analyzed in the laboratory. (a) Photo of a freshly split core that exhibits a transition in lake productivity (grey sediment on bottom to dark organic rich sediment on top). One half of the core is scanned for multiple types of data and sampled while the other half of the core is archived.
Lake coring operations at Twin Buttes Lake, Yellowstone National Park, (a) Assembled lake coring platform being launched into the Twin Buttes Lake and (b) anchored in the core sampling location. Photos taken under NPS research permit YELL-2022-SCI-0009 by S. Hurwitz (a) and L. Harrison (b) in August 2022.
Lake coring operations at Twin Buttes Lake, Yellowstone National Park, (a) Assembled lake coring platform being launched into the Twin Buttes Lake and (b) anchored in the core sampling location. Photos taken under NPS research permit YELL-2022-SCI-0009 by S. Hurwitz (a) and L. Harrison (b) in August 2022.
Cathodoluminescence images generated by the interaction of electromagnetic radiation ranging in energy from ultraviolet to near infrared with sectioned and polished zircon mineral grains from an Archean-age rock found in the Yellowstone region.
Cathodoluminescence images generated by the interaction of electromagnetic radiation ranging in energy from ultraviolet to near infrared with sectioned and polished zircon mineral grains from an Archean-age rock found in the Yellowstone region.
Scanning electron microscopy (SEM) images of the Colloidal Pool colloids (images are a combination of backscatter and secondary electrons). The colloids are a mixture of clay particles, hydrated silica, alunite, and diatoms.
Scanning electron microscopy (SEM) images of the Colloidal Pool colloids (images are a combination of backscatter and secondary electrons). The colloids are a mixture of clay particles, hydrated silica, alunite, and diatoms.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government