Warming at 18,000 yr B.P. in the Tropical Andes |
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| Authors: | Karin F Helmens Peter Kuhry Nathaniel W Rutter Klaas Van Der Borg Arie F M De Jong |
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| Institution: | aDepartment of Geography, University of Lethbridge, Lethbridge, Alberta, Canada, T1K 3M4;bArctic Centre, University of Lapland, P.O. Box 122, 96101, Rovaniemi, Finland;cDepartment of Geology, University of Alberta, Edmonton, Alberta, Canada, T6G 2E3;dRobert 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 18,00014C 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. |
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