TY  - JOUR
A1  - Suchodoletz, Hans von
A1  - Faust, Dominik
A1  - Zöller, Ludwig
T1  - Geomorphological investigations of sediment traps on Lanzarote (Canary Islands) as a key for the interpretation of a palaeoclimate archive off NW Africa
N2  - 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.
KW  - Lanzarote
KW  - Kanarische Inseln
KW  - Pleistozän
KW  - Holozän
KW  - Geomorphologie
KW  - Lanzarote
KW  - Canary Islands
KW  - Pleistocene
KW  - Holocene
KW  - geomorphology
Y1  - 2009
UR  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:703-opus4-4530
UR  - http://opus4.kobv.de/opus4-ubbayreuth/frontdoor/index/index/docId/453
ER  -