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GSA Special Papers
Paleoenvironments of Bear Lake, Utah and Idaho, and its catchment
Author(s)
Joseph G. Rosenbaum;
Joseph G. Rosenbaum
U.S. Geological Survey, Box 25046, MS 980 Federal Center, Denver, Colorado 80225, USA
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Darrell S. Kaufman
Darrell S. Kaufman
Department of Geology, Box 4099, Northern Arizona University, Flagstaff, Arizona 86011, USA
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Geological Society of America

Volume
450
Copyright:
© 2009 Geological Society of America
ISBN print:
9780813724508
Publication date:
May 01, 2009
Book Chapter
Late Quaternary sedimentary features of Bear Lake, Utah and Idaho
Author(s)
Joseph P Smoot
U.S. Geological Survey, M.S. 926A National Center, Reston, Virginia 20192, USA
Joseph P Smoot
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Published:May 01, 2009
Bear Lake sediments were predominantly aragonite for most of the Holocene, reflecting a hydrologically closed lake fed by groundwater and small streams. During the late Pleistocene, the Bear River flowed into Bear Lake and the lake waters spilled back into the Bear River drainage. At that time, sediment deposition was dominated by siliciclastic sediment and calcite. Lake-level fluctuation during the Holocene and late Pleistocene produced three types of aragonite deposits in the central lake area that are differentiated primarily by grain size, sorting, and diatom assemblage. Lake- margin deposits during this period consisted of sandy deposits including well-developed shoreface deposits...
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Index Terms/Descriptors
- aragonite
- assemblages
- Bear Lake
- Bear River basin
- bedding plane irregularities
- calcite
- carbonates
- Cenozoic
- clastic sediments
- cores
- deep-water environment
- deposition
- glaciation
- grain size
- gypsum
- Holocene
- hydrology
- Idaho
- lacustrine environment
- lake sediments
- lake-level changes
- laminations
- mud
- planar bedding structures
- Pleistocene
- precipitation
- Quaternary
- ripple marks
- roots
- salinity
- sedimentary structures
- sedimentation
- sediments
- shallow-water environment
- shore features
- siliciclastics
- sorting
- sulfates
- United States
- upper Pleistocene
- upper Quaternary
- Utah
Latitude & Longitude
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