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(Article of periodic en Anglais - 2004)

Document title

A Holocene pollen record of persistent droughts from Pyramid Lake, Nevada, USA

Authors(s) and Affiliation(s)

MENSING S.A. ; BENSON L.V. ; KASHGARIAN M. ; LUND S. ;

Abstract

Pollen and algae microfossils preserved in sediments from Pyramid Lake provide evidence for periods of persistent drought during the Holocene age. The timing and magnitude of droughts identified in the pollen record compares favorably with previously published delta O 18 data from Pyramid Lake. The timing of these droughts also agrees with the ages of submerged rooted stumps in the Eastern Sierra Nevada and woodrat midden data from central Nevada. Prolonged drought episodes appear to correspond with the timing of ice drift minima (solar maxima) identified from North Atlantic marine sediments, suggesting that changes in solar irradiance may be a possible mechanism

Source

Article of periodic

published at : Quaternary research / ISSN 0033-5894 / CODEN QRESAV

Editor : Elsevier, San Diego, CA - ETATS-UNIS (1970)

Millesime : 2004, vol. 62, no1 [pp. 29-38]

Bibliographic references : 43 ref.

Collation : Illustration ;

Language

Anglais

INIST-CNRS, Cote INIST : 15739

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2005.
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