Pleistocene Evolution of Orbital Periodicities in the High-Resolution Pollen Record Funza I, Eastern Cordillera, Colombia

  1. P. L. de Boer4 and
  2. D. G. Smith5
  1. H. Hooghiemstra1 and
  2. J. L. Melice2,3

Published Online: 29 APR 2009

DOI: 10.1002/9781444304039.ch11

Orbital Forcing and Cyclic Sequences

Orbital Forcing and Cyclic Sequences

How to Cite

Hooghiemstra, H. and Melice, J. L. (2009) Pleistocene Evolution of Orbital Periodicities in the High-Resolution Pollen Record Funza I, Eastern Cordillera, Colombia, in Orbital Forcing and Cyclic Sequences (eds P. L. de Boer and D. G. Smith), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444304039.ch11

Editor Information

  1. 4

    Utrecht, The Netherlands

  2. 5

    London, UK

Author Information

  1. 1

    Hugo de Vries-Laboratory, Department of Palynology and Paleo-/Actuo-ecology, University of Amsterdam, Kruislaan 318, 1098 SM Amsterdam, The Netherlands

  2. 2

    ORSTOM, 74, route d'Aulnay, F-93143 Bondy, France

  3. 3

    Institut d'Astronomie et de Géophysique G. Lemaître, Université Catholique de Louvain, 2, Chemin du Cyclotron, 1348 Louvain-la-Neuve, Belgium

Publication History

  1. Published Online: 29 APR 2009
  2. Published Print: 28 JAN 1994

ISBN Information

Print ISBN: 9780632037360

Online ISBN: 9781444304039

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Keywords:

  • Pleistocene evolution of orbital periodicities - Funza I;
  • Bogota sediments;
  • arboreal pollen records;
  • subparamo elements record;
  • change in climatic variability

Summary

The evolution of orbital periodicities during the Pleistocene has been studied in the 30–1450-ka Funza I pollen record from the sedimentary basin of Bogotá Eastern Cordillera, Colombia. Based on the improved time control of the Bogotá sediments (fission-track datings of Funza II tephra beds) the 1178 pollen samples analysed from between 2.90 and 340.00m core depths give an average time resolution of c.1205 years. Regular sampling was achieved with cubic spline interpolation and subsequently several time series, related to different variables of the palaeoclimate, were analysed by maximum entropy spectral analysis and Thomson multi-taper spectral analysis using a moving 400-ka window with steps of 20 ka.

The presence of eccentricity periods is restricted to the last c.800 ka of the Pleistocene, whereas periodicities of the precession band are present throughout the record. Three frequency bands of high palaeoclimatic variability centred at 10.1–10.6, 11.4–11.9 and 14–15 ka are also detected. These periods are very close to those predicted by the climatic non-linear model of Ghil and Le Treut & Ghil. Temperature- and precipitation-related changes of the altitudinal zonation of the vegetation belts on the tropical mountains of Colombia thus respond to orbital forcing, testifying to the global scale of climatic change.