Journal article
Reconstruction of a complex late Quaternary glacial landscape in the Cordillera de Cochabamba (Bolivia) based on a morphostratigraphic and multiple dating approach
JH May, J Zech, R Zech, F Preusser, J Argollo, PW Kubik, H Veit
Quaternary Research | CAMBRIDGE UNIV PRESS | Published : 2011
Abstract
Although glacial landscapes have previously been used for the reconstruction of late Quaternary glaciations in the Central Andes, only few data exist for the Eastern Cordillera in Bolivia. Here, we present results from detailed morphostratigraphic mapping and new data of surface exposure dating (SED), optically stimulated luminescence (OSL), and radiocarbon dating (14C) from the Huara Loma Valley, Cordillera de Cochabamba (Bolivia). Discrepancies between individual dating methods could be addressed within the context of a solid geomorphic framework. We identified two major glaciations. The older is not well constrained by the available data, whereas the younger glaciation is subdivided into ..
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Funding Acknowledgements
The authors would like to thank Ivan Mercolli, Urs Eggenberger and Christoph Bachtiger for their help with XRF and XRD analytics, Sonke Szidat for gamma spectrometric measurements, Daniela Fischer for OSL sample preparation, as well as Thomas Nagler and Igor Villa for providing laboratory facilities at the Institute of Geology University of Bern. The contribution of one conventional <SUP>14</SUP>C-age by the Institute of Physics, University of Bern, is gratefully acknowledged. Additional thanks for the positive and encouraging comments of Lewis Owen, Alan Gillespie, Pierre-Henri Blard and Jaqueline Smith, which helped to improve this paper. This study is a contribution to the SNF-funded project '<SUP>10</SUP>Be surface exposure dating in the Central Andes' (SNF 200020-113461).