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A Composite Depth Scale for Sediments from Crevice Lake, Montana

January 16, 2010

As part of a study to derive records of past environmental change from lake sediments in the western United States, a set of cores was collected from Crevice Lake, Montana, in late February and early March 2001. Crevice Lake (latitude 45.000N, longitude 110.578W, elevation 1,713 meters) lies adjacent to the Yellowstone River at the north edge of Yellowstone National Park. The lake is more than 31 meters deep and has a surface area of 7.76 hectares. The combination of small surface area and significant depth promote anoxic bottom-water conditions that preserve annual laminations (varves) in the sediment.

Three types of cores were collected through the ice. The uppermost sediments were obtained in freeze cores that preserved the sediment water interface. Two sites were cored with a 5-centimeter diameter corer. Five cores were taken with a 2-meter-long percussion piston corer. The percussion core uses a plastic core liner with an inside diameter of 9 centimeters. Coring was done at two sites. Because of the relatively large diameter of the percussion cores, samples from these cores were used for a variety of analyses including pollen, charcoal, diatoms, stable isotopes, organic and inorganic carbon, elemental analyses, and magnetic properties.

Publication Year 2010
Title A Composite Depth Scale for Sediments from Crevice Lake, Montana
DOI 10.3133/ofr20091277
Authors J. G. Rosenbaum, G. Skipp, J. Honke, C. Chapman
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2009-1277
Index ID ofr20091277
Record Source USGS Publications Warehouse
USGS Organization Earth Surface Processes Team - Central Region