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

Title data

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

Official URL: Volltext

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Colluvium; Alluvium; Geoarchaeology; Soil erosion; Optical dating; Insufficient bleaching; Quartz; Holocene
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Geomorphology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Chair Geomorphology - Univ.-Prof. Dr. Ludwig Zöller
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 550 Earth sciences, geology
Date Deposited: 15 Feb 2017 09:39
Last Modified: 15 Feb 2017 09:39
URI: https://eref.uni-bayreuth.de/id/eprint/36080