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Spectral analysis of selected sediment core samples from the Chew Bahir Basin, Ethiopian Rift in the spectral range from 0.3 to 17 µm: support for climate proxy information

Krüger, L. and Arnold, Gabriele and Asrat, A. and Cohen, A.S. and Förster, Verena and Henckel, Daniela and Schäbitz, F. and Lamb, H. and Trauth, M. and Günter, C. (2019) Spectral analysis of selected sediment core samples from the Chew Bahir Basin, Ethiopian Rift in the spectral range from 0.3 to 17 µm: support for climate proxy information. Copernicus. EGU General Assembly 2019, 7.-12 April, 2019, Wien, Österreich.

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Abstract

Investigations on short (≤18.8 m) sediment cores retrieved along a NW-SE transect across the Chew Bahir (CB) basin, Southern Ethiopian Rift, have shown that they can provide valuable climate information (Förster et al., 2012). The relationship between mineralogical and geochemical properties of the core samples is closely linked to the hydroclimate history of the region. During dry climate episodes both the illitization of the smectites and the octahedral Al-to-Mg substitution in the phyllosilicate materials has been documented. An enhanced potassium fixation during dry intervals is also linked to the increase in layer charge caused by the authigenic changes in octahedral composition (Förster et al., 2018)

Item URL in elib:https://elib.dlr.de/132032/
Document Type:Conference or Workshop Item (Poster)
Title:Spectral analysis of selected sediment core samples from the Chew Bahir Basin, Ethiopian Rift in the spectral range from 0.3 to 17 µm: support for climate proxy information
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Krüger, L.University of Potsdam, Institute of Geosciences, Potsdam, GermanyUNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Asrat, A.Addis Ababa University, School of Earth Sciences, Addis Ababa, EthiopiaUNSPECIFIED
Cohen, A.S.University of Arizona, Department of Geosciences, Tucson AZ, USAUNSPECIFIED
Förster, VerenaInstitute of Geography Education, University of Cologne, Cologne, GermanyUNSPECIFIED
Henckel, DanielaDaniela.Henckel (at) dlr.deUNSPECIFIED
Schäbitz, F.University of Cologne, Institute of GeographyUNSPECIFIED
Lamb, H.Aberystwyth University, Department of Geography and Earth Sciences, UKUNSPECIFIED
Trauth, M.University of Potsdam, Institute of Geosciences, Potsdam, GermanyUNSPECIFIED
Günter, C.University of Potsdam, Institute of Geosciences, Potsdam, GermanyUNSPECIFIED
Date:2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:21
Page Range:p. 7712
Publisher:Copernicus
Series Name:Geophysical Research Abstracts
Status:Published
Keywords:Chew Bahir, remote sensing, laboratory spectroscopy
Event Title:EGU General Assembly 2019
Event Location:Wien, Österreich
Event Type:international Conference
Event Dates:7.-12 April, 2019
Organizer:Copernicus
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Arnold, Dr. Gabriele
Deposited On:09 Dec 2019 08:03
Last Modified:09 Dec 2019 08:03

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