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Warming at 18,000 yr B.P. in the Tropical Andes

Published online by Cambridge University Press:  20 January 2017

Karin F. Helmens ,
Peter Kuhry ,
Nathaniel W. Rutter ,
Klaas Van Der Borg  and
Arie F. M. De Jong
Karin F. Helmens
Affiliation:
Department of Geography, University of Lethbridge, Lethbridge, Alberta, Canada, T1K 3M4
Peter Kuhry
Affiliation:
Arctic Centre, University of Lapland, P.O. Box 122, 96101, Rovaniemi, Finland
Nathaniel W. Rutter
Affiliation:
Department of Geology, University of Alberta, Edmonton, Alberta, Canada, T6G 2E3
Klaas Van Der Borg
Affiliation:
Robert J. Van de Graaff Laboratory, University of Utrecht, P.O. Box 80 000, 3508 TA, Utrecht, The Netherlands
Arie F. M. De Jong
Affiliation:
Robert J. Van de Graaff Laboratory, University of Utrecht, P.O. Box 80 000, 3508 TA, Utrecht, The Netherlands
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Abstract

Palynological, paleopedological, and glacial geomorphological evidence from the area of the high plain of Bogotá in the Colombian Eastern Cordillera indicates a significant climatic warming around 18,000 14C yr B.P. Comparison of dated vegetation changes, pedogenic episodes, and glacier fluctuations provides the basis for defining the so-called “La Laguna Interstadial” that lasted from 19,500 to 17,000 yr B.P. During this interstadial period, mean annual temperatures in the tropical Andes were up to 4°C higher than during the preceding and following stadial periods, when full-glacial conditions prevailed and temperatures were up to 8°C colder than at present.

Type
Research Article
Information
Quaternary Research , Volume 45 , Issue 3 , May 1996 , pp. 289 - 299
Copyright
University of Washington

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