A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA

Salt Core DV93 -1, from Badwater Basin in California's Death Valley, spans the past 192 ka. An analysis of fossil palynomorphs from 151.8 m (ca. 166 ka) to 103.5 m (ca. 114 ka) delimits four pollen zones. Zone 1, the "cheno -am" zone (151.8 to 143.5 m depth, 166 -154 ka), contains hig...

Full description

Bibliographic Details
Main Author:	Bader, Nicholas E.
Other Authors:	Davis, Owen K.
Language:	en_US
Published:	The University of Arizona. 1999
Online Access:	http://hdl.handle.net/10150/249272

id	ndltd-arizona.edu-oai-arizona.openrepository.com-10150-249272
record_format	oai_dc
spelling	ndltd-arizona.edu-oai-arizona.openrepository.com-10150-2492722015-10-23T04:57:33Z A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA Bader, Nicholas E. Davis, Owen K. Davis, Owen K. Quade, Jay Dettman, David Bader, Nicholas E. Salt Core DV93 -1, from Badwater Basin in California's Death Valley, spans the past 192 ka. An analysis of fossil palynomorphs from 151.8 m (ca. 166 ka) to 103.5 m (ca. 114 ka) delimits four pollen zones. Zone 1, the "cheno -am" zone (151.8 to 143.5 m depth, 166 -154 ka), contains high percentages of Chenopodiaceae /Amaranthus pollen, and correlates with marine Oxygen Isotope Stage (OIS) 7. Zone 2, the juniper zone (143.5 to 117.3 m, 154 -124 ka), correlates with OIS 6 and contains high percentages of Cupressaceae pollen and low percentages of Ambrosia pollen. A simultaneous drop in juniper and increase in oak (Quercus) pollen, followed by replacement of Artemisia with Ambrosia, occurs at the Zone 2 /Zone 3 (oak zone) boundary (124 ka), corresponding to OIS Termination II warming. Zone 4, the Asteraceae zone (108.8 to 103.5 m, 119 -115 ka), contains higher percentages of Asteraceae and cheno -am pollen, indicating further warming. 1999 text Thesis-Reproduction (electronic) http://hdl.handle.net/10150/249272 en_US Copyright © is held by the author. Digital access to this material is made possible by the Antevs Library, Department of Geosciences, and the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author or the department. The University of Arizona.
collection	NDLTD
language	en_US
sources	NDLTD
description	Salt Core DV93 -1, from Badwater Basin in California's Death Valley, spans the past 192 ka. An analysis of fossil palynomorphs from 151.8 m (ca. 166 ka) to 103.5 m (ca. 114 ka) delimits four pollen zones. Zone 1, the "cheno -am" zone (151.8 to 143.5 m depth, 166 -154 ka), contains high percentages of Chenopodiaceae /Amaranthus pollen, and correlates with marine Oxygen Isotope Stage (OIS) 7. Zone 2, the juniper zone (143.5 to 117.3 m, 154 -124 ka), correlates with OIS 6 and contains high percentages of Cupressaceae pollen and low percentages of Ambrosia pollen. A simultaneous drop in juniper and increase in oak (Quercus) pollen, followed by replacement of Artemisia with Ambrosia, occurs at the Zone 2 /Zone 3 (oak zone) boundary (124 ka), corresponding to OIS Termination II warming. Zone 4, the Asteraceae zone (108.8 to 103.5 m, 119 -115 ka), contains higher percentages of Asteraceae and cheno -am pollen, indicating further warming.
author2	Davis, Owen K.
author_facet	Davis, Owen K. Bader, Nicholas E.
author	Bader, Nicholas E.
spellingShingle	Bader, Nicholas E. A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA
author_sort	Bader, Nicholas E.
title	A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA
title_short	A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA
title_full	A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA
title_fullStr	A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA
title_full_unstemmed	A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA
title_sort	palynological analysis of part of death valley core dv93-1: 166-114 ka
publisher	The University of Arizona.
publishDate	1999
url	http://hdl.handle.net/10150/249272
work_keys_str_mv	AT badernicholase apalynologicalanalysisofpartofdeathvalleycoredv931166114ka AT badernicholase palynologicalanalysisofpartofdeathvalleycoredv931166114ka
_version_	1718101649559388160

A Palynological Analysis of Part of Death Valley Core DV93-1: 166-114 KA

Similar Items