Just, Janna ORCID: 0000-0002-5257-604X, Schefuss, Enno, Kuhlmann, Holger ORCID: 0000-0001-8932-7031, Stuut, Jan-Berend W. and Paetzold, Juergen (2014). Climate induced sub-basin source-area shifts of Zambezi River sediments over the past 17 ka. Paleogeogr. Paleoclimatol. Paleoecol., 410. S. 190 - 200. AMSTERDAM: ELSEVIER. ISSN 1872-616X

Full text not available from this repository.

Abstract

Geochemical and mineralogical proxies for paleoenvironmental conditions have the underlying assumption that climate variations have an impact on terrestrial weathering conditions. Varying properties of terrigenous sediments deposited at sea are therefore often interpreted in terms of paleoenvironmental change. Also in gravity core GeoB9307-3 (18 degrees 33.99' S, 37 degrees 22.89' E), located off the Zambezi River, environmental changes during Heinrich Stadial 1 (HS 1) and the Younger Dryas (YD) are accompanied by changing properties of the terrigenous sediment fraction. Our study focuses on the relationship of variability in the hydrological system and changes in the magnetic properties, major element geochemistry and granulometry of the sediments. We propose that changes in bulk sedimentary properties concur with environmental change, although not as a direct response of climate driven pedogenic processes. Spatial varying rainfall intensities on a sub-basin scale modify sediment export from different parts of the Zambezi River basin. During humid phases, such as HS 1 and the YD, sediment was mainly exported from the coastal areas, while during more arid phases sediments mirror the hinterland soil and lithological properties and are likely derived from the northern Shire sub-basin. We propose that a de-coupling of sedimentological and organic signals with variable discharge and erosional activity can occur. (C) 2014 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Just, JannaUNSPECIFIEDorcid.org/0000-0002-5257-604XUNSPECIFIED
Schefuss, EnnoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kuhlmann, HolgerUNSPECIFIEDorcid.org/0000-0001-8932-7031UNSPECIFIED
Stuut, Jan-Berend W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paetzold, JuergenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-428697
DOI: 10.1016/j.palaeo.2014.05.045
Journal or Publication Title: Paleogeogr. Paleoclimatol. Paleoecol.
Volume: 410
Page Range: S. 190 - 200
Date: 2014
Publisher: ELSEVIER
Place of Publication: AMSTERDAM
ISSN: 1872-616X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
MAGNETIC-SUSCEPTIBILITY; PALEOCLIMATIC INTERPRETATION; ATLANTIC-OCEAN; CLAY-MINERALS; CHINESE LOESS; GRAIN-SIZE; WET PHASES; AFRICA; VARIABILITY; PATTERNSMultiple languages
Geography, Physical; Geosciences, Multidisciplinary; PaleontologyMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/42869

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item