Beaver-Danube interglacial

The beaver-Danube interglacial (also called beaver-Danube warm period ) is the oldest named warm period of the Pleistocene of the Alps . It lies between the beaver and Danube glacial periods .

structure

The beaver-Danube interglacial is defined as the erosion phase that follows the beaver glacial period and preceded the Danube glacial period. It is therefore represented by the gap between the deposits, which are ascribed to the two glacial periods; in the type region of the two glacial periods, i.e. between the gravel of the herbaceous slab and the lower deck gravel of the Zusam slab in the area of the Iller-Lech slab . The interglacial has not yet been biostratigraphically dated and can only be localized geomorphologically based on the surface forms. A type region has not yet been specified.

The assignment to the North German and Dutch warm periods is not certain. If the allocation of the gravel of the Zusam-Platte (Danube glacial period) corresponds to the Menapian of the Dutch subdivision, and the crushed stone of the perennial plate (Beaver glacial period) corresponds to the Eburonium , then the beaver-Danube interglacial corresponds to the Waal interglacial . This would result in an assignment to MIS 29-35, and thus an age of approximately 1.1 to 1.4 million years. However, the correlation is fraught with problems due to the knowledge that the corresponding deposits in the Netherlands were probably not controlled by climatic changes. There are similar doubts about climatic reasons for both the Beaver and the Danube Glaciation for the Alpine region; tectonic control is possible as a result of uplift phases in the Alps.

The realization that both the Beaver and Danube glacial periods do not represent a single glacial period, but rather probably several glacial periods, and the fact that the erosion phase of the Beaver-Danube interglacial does not differ very much from similar periods of the Old Pleistocene of the Alps raises doubts based on the meaning of the term 'beaver-Danube-interglacial'.

The beaver-Danube interglacial corresponds at least partially to the Swiss gravel glaciation.

literature

KA Habbe, with the collaboration of D. Ellwanger and R. Becker-Haumann: Stratigraphic terms for the Quaternary of the southern German Alpine foothills . In: T. Litt on behalf of the German Stratigraphic Commission 2007 (Ed.): Ice Age and Present / Quaternary Science Journal . 56, No. 1/2. E. Schweizerbart'sche Verlagbuchhandlung (Nägele and Obermiller), 2007, ISSN 0424-7116 , p. 66-83 , doi : 10.3285 / eg.56.1-2.03 ( article ).

T. Litt et al .: The Quaternary in the Stratigraphic Table of Germany 2002 . In: Newsletters in Stratigraphy . tape 41 , no. 1-3 . Berlin, Stuttgart 2002, pp. 385–399 ( explanations; PDF, 124 kB and table; PDF, 182 kB ).

Web links

Stratigraphic tables from the Bavarian State Geological Office. Ad-hoc-AG Geology of the State Geological Services (SGD) and the BGR

Individual evidence

↑ Lorraine E. Lisiecki, Maureen E. Raymo: A Plio-Pleistocene Stack of 57 Globally Distributed Benthic δ ¹⁸ O Records . In: Paleoceanography . tape 20 , 2005 ( wiley.com [PDF; 1.1 MB ]).
↑ Habbe 2007 , p. 72
↑ Ueli Reinmann: On the trail of the Ice Age in the Wangen a. A. New findings based on soil studies in the terminal moraine area of the Rhone Glacier. In: Yearbook of the Oberaargau . tape 47 , 2004, p. 135–152 ( unibe.ch [PDF; 12.5 MB ]).

[1] Lorraine E. Lisiecki, Maureen E. Raymo: A Plio-Pleistocene Stack of 57 Globally Distributed Benthic δ ¹⁸ O Records . In: Paleoceanography . tape 20 , 2005 ( wiley.com [PDF; 1.1 MB ]).

[2] Habbe 2007 , p. 72

[3] Ueli Reinmann: On the trail of the Ice Age in the Wangen a. A. New findings based on soil studies in the terminal moraine area of the Rhone Glacier. In: Yearbook of the Oberaargau . tape 47 , 2004, p. 135–152 ( unibe.ch [PDF; 12.5 MB ]).