We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Early Holocene Great Salt Lake, USA.
- Authors
Oviatt, Charles G.; Madsen, David B.; Miller, David M.; Thompson, Robert S.; McGeehin, John P.
- Abstract
Shorelines and surficial deposits (including buried forest-floor mats and organic-rich wetland sediments) show that Great Salt Lake did not rise higher than modern lake levels during the earliest Holocene (11.5–10.2 cal ka BP; 10–9 14 C ka BP). During that period, finely laminated, organic-rich muds (sapropel) containing brine-shrimp cysts and pellets and interbedded sodium-sulfate salts were deposited on the lake floor. Sapropel deposition was probably caused by stratification of the water column — a freshwater cap possibly was formed by groundwater, which had been stored in upland aquifers during the immediately preceding late-Pleistocene deep-lake cycle (Lake Bonneville), and was actively discharging on the basin floor. A climate characterized by low precipitation and runoff, combined with local areas of groundwater discharge in piedmont settings, could explain the apparent conflict between evidence for a shallow lake (a dry climate) and previously published interpretations for a moist climate in the Great Salt Lake basin of the eastern Great Basin.
- Subjects
GREAT Salt Lake (Utah); HOLOCENE Epoch; SEDIMENTATION &; deposition; WETLANDS; SODIUM sulfate
- Publication
Quaternary Research, 2015, Vol 84, Issue 1, p57
- ISSN
0033-5894
- Publication type
Article
- DOI
10.1016/j.yqres.2015.05.001