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Aminostratigraphic Evaluation of Conflicting Age Estimates for the "Young Loess" of Hungary

Published online by Cambridge University Press:  20 January 2017

Eric A. Oches  and
William D. McCoy
Eric A. Oches
Affiliation:
Department of Geology and Geophysics, University of Minnesota, 108 Pillsbury Hall, 310 Pillsbury Drive S.E., Minneapolis, Minnesota 55455-0219
William D. McCoy
Affiliation:
Department of Geology and Geography, Box 35820, University of Massachusetts, Amherst, Massachusetts 01003-5820
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Abstract

As part of a regional investigation of the aminostratigraphy of central European loess deposits, we have sampled and analyzed the amino acid composition of fossil gastropod shells from stratotype loess profiles at Mende, Basaharc, and Paks, plus the profile at Süttö, in an effort to correlate independently loess-paleosol formations of the "Young Loess" of Hungary with loess units elsewhere in the region. The measured extent of isoleucine epimerization in fossil gastropod shells preserved in loess sediments was used to evaluate the relative ages of stratigraphic units and correlate between discontinuous exposures. Based on amino acid epimerization ratios, we propose a new chronology for the standard "Young Loess" profile of Hungary. Amino acid geochronological data suggest that paleosol complexes MF, BD1 + 2, and BA formed during interglaciations, rather than interstades. Correlations are suggested with PK 2 + 3 (last interglaciation), PK 4 (penultimate interglaciation), and PK 5, respectively, from previously described Czech and Slovak localities.

Type
Research Article
Information
Quaternary Research , Volume 44 , Issue 2 , September 1995 , pp. 160 - 170
Copyright
University of Washington

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