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Colluvial and alluvial sediment archives temporally resolved by OSL dating : implications for reconstructing soil erosion

Titelangaben

Fuchs, Markus ; Fischer, Manfred ; Reverman, Rebecca:
Colluvial and alluvial sediment archives temporally resolved by OSL dating : implications for reconstructing soil erosion.
In: Quaternary Geochronology. Bd. 5 (2010) Heft 2-3 . - S. 269-273.
ISSN 1871-1014
DOI: https://doi.org/10.1016/j.quageo.2009.01.006

Abstract

Colluvial and alluvial sediments represent important geoarchives to reconstruct long-term soil erosion and to gain insight into the complex system of sediment cascades and sediment fluxes within a catchment. In this respect, the temporal information of sediment archive formation is essential and achievable through optical stimulated luminescence (OSL) dating. In this study, colluvial and alluvial sediments from a mesoscale catchment in northern Bavaria were investigated and dated by OSL. Insufficient sediment bleaching was detected for some of the samples. In these cases, the method proposed by Fuchs and Lang [Fuchs, M., Lang, A., 2001. OSL dating of coarse-grain fluvial quartz using single-aliquot protocols on sediments from NE Peloponnese, Greece. Quaternary Science Reviews 20, 783–787.] was applied for equivalent dose (De) determination. The calculated OSL ages are in stratigraphic order and their accuracy is confirmed by 14C age control. Based on the chronostratigraphies for alluvial and colluvial archives, there is a dominant synchronous sedimentation history for the Medieval and Modern period, but initiation of Holocene sedimentation occurred at different times in the upper and lower parts of the catchment. The latter phenomenon might be explained by the decoupled sediment fluxes between both the slope–channel system and the upper and lower catchment.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Colluvium; Alluvium; Geoarchaeology; Soil erosion; Optical dating; Insufficient bleaching; Quartz; Holocene
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Geomorphologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Ehemalige ProfessorInnen > Lehrstuhl Geomorphologie - Univ.-Prof. Dr. Ludwig Zöller
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Ehemalige ProfessorInnen
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
Eingestellt am: 15 Feb 2017 09:39
Letzte Änderung: 05 Okt 2023 11:27
URI: https://eref.uni-bayreuth.de/id/eprint/36080