Directly dated MIS 3 lake-level record from Lake Manix, Mojave Desert, California, USA

Quaternary Research
By: , and 

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Abstract

An outcrop-based lake-level curve, constrained by ~ 70 calibrated 14C ages on Anodonta shells, indicates at least 8 highstands between 45 and 25 cal ka BP within 10 m of the 543-m upper threshold of Lake Manix in the Mojave Desert of southern California. Correlations of Manix highstands with ice, marine, and speleothem records suggest that at least the youngest three highstands coincide with Dansgaard–Oeschger (D–O) stadials and Heinrich events 3 and 4. The lake-level record is consistent with results from speleothem studies in the Southwest that indicate cool wet conditions during D–O stadials. Notably, highstands between 43 and 25 ka apparently occurred at times of generally low levels of pluvial lakes farther north as interpreted from core-based proxies. Mojave lakes may have been supported by tropical moisture sources during oxygen-isotope stage 3, perhaps controlled by southerly deflection of Pacific storm tracks due to weakening of the sea-surface temperature gradient in response to North Atlantic climate perturbations.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Directly dated MIS 3 lake-level record from Lake Manix, Mojave Desert, California, USA
Series title Quaternary Research
DOI 10.1016/j.yqres.2014.11.003
Volume 83
Issue 1
Year Published 2015
Language English
Publisher Elsevier
Contributing office(s) Geosciences and Environmental Change Science Center
Description 7 p.
First page 187
Last page 203
Country United States
State California
Other Geospatial Lake Manix, Mojave Desert
Online Only (Y/N) N
Additional Online Files (Y/N) N