Geomorphological investigations of sediment traps on Lanzarote (Canary Islands) as a key for the interpretation of a palaeoclimate archive off NW Africa

URN to cite this document: urn:nbn:de:bvb:703-opus4-4530

Title data

von Suchodoletz, Hans ; Faust, Dominik ; Zöller, Ludwig:
Geomorphological investigations of sediment traps on Lanzarote (Canary Islands) as a key for the interpretation of a palaeoclimate archive off NW Africa.
Bayreuth , 2009
DOI der Verlagsversion: https://doi.org/10.1016/j.quaint.2008.03.014

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Abstract

On Lanzarote (Canary Islands) Late Quaternary Saharan dust and volcanic material were trapped in Miocence to Pliocene valleys dammed by volcanic lava flows. These trapped sediments are potentially interesting as they can be natural archives useful to reconstruct the terrestrial palaeoclimate history of the NW African margin. Nevertheless, slope wash processes altered the primarily eolian deposits, making climatic interpretation not straightforward. Geomorphological mapping, GIS calculations and sedimentological investigations were used to unravel these processes influencing the temporal resolution of the palaeoclimatic archive, demonstrating that they average the palaeoclimatic signal by some ka. Thus, despite the colluvial geomorphic environment, the valley fillings can be used for palaeoclimatic interpretation of events with a length of at least some ka. The youngest sediments, deposited since at least 2.5 ka, are anthropogenically triggered and thus cannot be used for palaeoclimatic interpretation. The results show that the input of Saharan dust at Lanzarote increased during the last 1.0 Ma and especially during the Early/Middle Holocene.

Further data

Item Type:	Preprint, postprint
Additional notes (visible to public):	erscheint in: Quaternary International 196, 44-56 (2009); doi: 10.1016/j.quaint.2008.03.014.
Keywords:	Lanzarote; Kanarische Inseln; Pleistozän; Holozän; Geomorphologie; Lanzarote; Canary Islands; Pleistocene; Holocene; geomorphology
DDC Subjects:	500 Science > 550 Earth sciences, geology
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-opus4-4530
Date Deposited:	25 Apr 2014 10:16
Last Modified:	09 Jun 2021 09:06
URI:	https://epub.uni-bayreuth.de/id/eprint/533

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