Late Cenozoic Drainage History of the Southwestern Great Basin and Lower Colorado River Region: Geologic and Biotic Perspectives

Lake Manix shorelines and Afton Canyon terraces: Implications for incision of Afton Canyon
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Published:January 01, 2008
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CiteCitation
Marith C. Reheis, Joanna L. Redwine, 2008. "Lake Manix shorelines and Afton Canyon terraces: Implications for incision of Afton Canyon", Late Cenozoic Drainage History of the Southwestern Great Basin and Lower Colorado River Region: Geologic and Biotic Perspectives, Marith C. Reheis, Robert Hershler, David M. Miller
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Lake Manix, in south-central California, was the terminal basin of the Mojave River until the late Pleistocene, when it drained east to the Lake Mojave Basin. Based on new field observations, radiocarbon ages, and soil development, we propose modifications to previously published hypotheses on the timing of the last 543 m above sea level (masl) highstand of Lake Manix, the timing of the first discharge eastward, and the time required to cut Afton Canyon between the two basins.
Subtle beach barriers, wave-cut scarps, and lagged beach gravels indicate that Lake Manix reached highstands between 547 and 558 masl at least...
- absolute age
- alluvial fans
- alluvium
- beaches
- C-14
- canyons
- carbon
- Cenozoic
- clastic sediments
- dates
- discharge
- drainage basins
- erosion
- geomorphology
- gravel
- highstands
- hydrology
- incised valleys
- isotopes
- lacustrine environment
- lakes
- landform evolution
- landforms
- lithostratigraphy
- Pleistocene
- properties
- Quaternary
- radioactive isotopes
- rainfall
- sediments
- shore features
- shorelines
- soils
- stratigraphic units
- terraces
- upper Pleistocene
- Mojave River
- Lake Manix
- Lake Mojave
- Harper Lake
- Afton Canyon