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A Speleothem Record of Younger Dryas Cooling, Klamath Mountains, Oregon, USA

Published online by Cambridge University Press:  20 January 2017

David A. Vacco*
Affiliation:
Department of Geosciences, Pennsylvania State University, State College, PA 16802, USA
Peter U. Clark
Affiliation:
Department of Geosciences, Oregon State University, Corvallis, OR 97331, USA
Alan C. Mix
Affiliation:
College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
Hai Cheng
Affiliation:
Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, USA
R. Lawrence Edwards
Affiliation:
Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, USA
*
* Corresponding author. E-mail address:dvacco@geosc.psu.edu (D.A. Vacco).

Abstract

A well-dated δ18O record in a stalagmite from a cave in the Klamath Mountains, Oregon, with a sampling interval of 50 yr, indicates that the climate of this region cooled essentially synchronously with Younger Dryas climate change elsewhere in the Northern Hemisphere. The δ18O record also indicates significant century-scale temperature variability during the early Holocene. The δ13C record suggests increasing biomass over the cave through the last deglaciation, with century-scale variability but with little detectable response of vegetation to Younger Dryas cooling.

Type
Short Paper
Copyright
Copyright © University of Washington

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