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Devils Hole, Nevada, δ18O record extended to the mid-Holocene

Quaternary Research

By:
, , , , , , and
DOI: 10.1016/j.yqres.2006.06.003

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Abstract

The mid-to-late Pleistocene Devils Hole δ18O record has been extended from 60,000 to 4500 yr ago. The new δ18O time series, in conjunction with the one previously published, is shown to be a proxy of Pacific Ocean sea surface temperature (SST) off the coast of California. During marine oxygen isotope stages (MIS) 2 and 6, the Devil Hole and SST time series exhibit a steady warming that began 5000 to > 10,000 yr prior to the last and penultimate deglaciations. Several possible proximate causes for this early warming are evaluated. The magnitude of the peak δ18O or SST during the last interglacial (LIG) is significantly greater (1 per mill and 2 to 3°C, respectively) than the peak value of these parameters for the Holocene; in contrast, benthic δ18O records of ice volume show only a few tenths per mill difference in the peak value for these interglacials. Statistical analysis provides an estimate of the large shared information (variation) between the Devils Hole and Eastern Pacific SST time series from ∼ 41 to ∼ 2°N and enforces the concept of a common forcing among all of these records. The extended Devils Hole record adds to evidence of the importance of uplands bordering the eastern Pacific as a source of archives for reconstructing Pacific climate variability.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Devils Hole, Nevada, δ18O record extended to the mid-Holocene
Series title:
Quaternary Research
DOI:
10.1016/j.yqres.2006.06.003
Volume
66
Issue:
2
Year Published:
2006
Language:
English
Publisher:
Elsevier
Description:
11 p.
First page:
202
Last page:
212
Online Only (Y/N):
N
Additional Online Files(Y/N):
N