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Holocene morphodynamics in the Ugii Nuur basin, Mongolia : insights from a sediment profile and 1D electrical resistivity tomography

Schwanghart, W. and Schütt, B.. (2008) Holocene morphodynamics in the Ugii Nuur basin, Mongolia : insights from a sediment profile and 1D electrical resistivity tomography. Zeitschrift für Geomorphologie. Supplementbände. Neue Folge, Vol. 52, no. 2. pp. 35-55.

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Official URL: http://edoc.unibas.ch/dok/A5249675

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Abstract

Sediment profile analysis and electrical resistivity tomography were applied in the Ugii Nuur basin, central Mongolia, in order to gain insight into the sedimentary architecture of valley fillings. It is shown that important constituents in the near surface ground are aeolian fines. Coarse grainsizes were predominantly deposited during the Late Pleistocene and the beginning of the Holocene indicating local dune activity and arid conditions. Since the Early to Mid Holocene a larger proportion of silt suggests an increase in mineral dust deposition. In combination with soil formation this points at dust trapping by a denser vegetation cover that reflects more humid conditions in the Ugii Nuur basin. Yet, 1D electrical resistivity tomography (VES) shows that Holocene deposits represent only a minor part of the thick valley fillings. Hence, it is assumed that there main extent has been established during the Pleistocene.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geographie > Physiogeographie und Umweltwandel (Kuhn)
UniBasel Contributors:Schwanghart, Wolfgang
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Note:Also published in: From archive to process. - Berlin : Borntraeger, 2008. - S. 35-55 -- Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:30
Deposited On:22 Mar 2012 14:15

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