Universität zu Köln

Voelkel, Joerg, Leopold, Matthias ORCID: 0000-0003-0716-0093, Doetterl, Sebastian ORCID: 0000-0002-0986-891X, Schneider, Anna ORCID: 0000-0002-1852-7359, Huerkamp, Kerstin and Hilgers, Alexandra (2011). Origin and age of the Lower Bavarian sand dune landscape around Abensberg and Siegenburg. Z. Geomorphol., 55 (4). S. 515 - 537. STUTTGART: GEBRUDER BORNTRAEGER. ISSN 0372-8854

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Abstract

The Lower Bavarian aeolian sand areas and sand dune landscape in the Abensberg/Siegenburg area (county/Landkreis Kelheim, Lower Bavaria) originated in an area where the Late Tertiary deltaic sediments of the Ur-Naab are overlain by a complex system of Pleistocene Danube gravels as well as those of the Abens river, deposited by in parts widely-shifting Quaternary river courses, mainly during the Riss glacial. This explains the absence of any significant loess cover of the area. The sand dunes and aeolian sands occurring there have been known for a long time, and their mostly late glacial age origin can be stratigraphically inferred. During the Holocene there were repeated phases of aeolian remobilisation, each of them related to an overexploitation of the carrying capacity of the landscape. It can be excluded that remobilisation was caused by changing climate. Today the dune fields, up to 10 m high, have partly been set aside as nature reserves, or are being used for agriculture and forestry. Based on geophysical prospection, at four selected dune chains and their surroundings, a distinction has been made between the underlying aeolian sand sheet, the dune cores, and younger aeolian accumulation bodies, and they have been sedimentologically characterised. The dune sands have been dated by OSL, macro-remains and the humous material of fossilised soil horizons by the radiocarbon method. Forest clearing of much of the landscape began during the Neolithic period, related to the operation of a flintstone mine at Arnhofen. Two significant phases of sand dune growth have been dated to the Bronze Age and the High Middle Ages, largely determining the aspect of the present dune landscape. There is evidence of younger remobilisation phases up to the 1950s. With reduced settlement pressure, each time the dune landscape returned to a phase of morphodynamic stability, without any evidence of directed reforestation or dune stabilisation measures of the sands. Today, under the name of Durnbucher Forest, the former hunting preserve of the Wittelsbach noble family, the Abensberg/Siegenburg dune landscape is one of the largest contiguous forest areas of Bavaria.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Voelkel, Joerg UNSPECIFIED UNSPECIFIED UNSPECIFIED Leopold, Matthias UNSPECIFIED orcid.org/0000-0003-0716-0093 UNSPECIFIED Doetterl, Sebastian UNSPECIFIED orcid.org/0000-0002-0986-891X UNSPECIFIED Schneider, Anna UNSPECIFIED orcid.org/0000-0002-1852-7359 UNSPECIFIED Huerkamp, Kerstin UNSPECIFIED UNSPECIFIED UNSPECIFIED Hilgers, Alexandra UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-484995
DOI:	10.1127/0372-8854/2011/0060
Journal or Publication Title:	Z. Geomorphol.
Volume:	55
Number:	4
Page Range:	S. 515 - 537
Date:	2011
Publisher:	GEBRUDER BORNTRAEGER
Place of Publication:	STUTTGART
ISSN:	0372-8854
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language REGENERATIVE-DOSE PROTOCOL; FELDSPAR IRSL; SEDIMENTS; SAR Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48499