Donn (geology)

A Donn is a fossil , diked beach wall , which today lies in the marshland and is no longer influenced by the sea. Often this, formerly parallel to the coast sandbanks and spits up to 5 m high dune up blowing. Moorlands could form under the protection of the ramparts. These elongated beach walls represent areas with stable building ground in the rather unstable marshland . Therefore, these former beach walls are now usually built on and strongly influenced by anthropogenic factors. The few, still original landforms are largely protected as geotopes .

Such fossil beach walls are particularly common on the west coast of Schleswig-Holstein , in the southern part of Dithmarschen . Some names of localities, such as B. Sankt Michaelisdonn or Hochdonn are derived from these landscape forms.

Cultivated and wooded St. Michaelisdonn on the left edge of the picture, on the right the wooded fossil cliff edge of Klev can be seen.

Examples (selection)

Sankt Michaelisdonn
Elpersbüttler Donn / Averlaker Donn
Thingdon
Hochdonn

Individual evidence

↑ Ad-hoc-AG Geotope Protection: Working Instructions Geotope Protection in Germany - Guideline of the Geological Services of the States of the Federal Republic of Germany . Federal Agency for Nature Conservation (Ed.), Applied Landscape Ecology, Issue 9, Bonn-Bad Godesberg 1996.
^ State Office for Agriculture, Environment and Rural Areas of the State of Schleswig-Holstein: Across Schleswig-Holstein - Understanding Our Soil . Series of publications LLUR SH - Geologie und Boden, Issue 13, 3rd edition, Kiel 2011, ISBN 978-3-937937-37-3 , pp. 66f.
^ State Office for Agriculture, Environment and Rural Areas of the State of Schleswig-Holstein: Across Schleswig-Holstein - Understanding Our Soil . Series of publications LLUR SH - Geologie und Boden, Issue 13, 3rd edition, Kiel 2011, ISBN 978-3-937937-37-3 , p. 67.
↑ Appendix 2 of the Landscape Development Plan (LEP) Ditmarschen, p. 2 , accessed on April 20, 2015
^ Hansjörg Küster: History of the landscape in Central Europe: From the Ice Age to the present . CH Beck, 2010, ISBN 978-3-4066-0848-3 , p. 144.

[1] Ad-hoc-AG Geotope Protection: Working Instructions Geotope Protection in Germany - Guideline of the Geological Services of the States of the Federal Republic of Germany . Federal Agency for Nature Conservation (Ed.), Applied Landscape Ecology, Issue 9, Bonn-Bad Godesberg 1996.

[2] State Office for Agriculture, Environment and Rural Areas of the State of Schleswig-Holstein: Across Schleswig-Holstein - Understanding Our Soil . Series of publications LLUR SH - Geologie und Boden, Issue 13, 3rd edition, Kiel 2011, ISBN 978-3-937937-37-3 , pp. 66f.

[3] State Office for Agriculture, Environment and Rural Areas of the State of Schleswig-Holstein: Across Schleswig-Holstein - Understanding Our Soil . Series of publications LLUR SH - Geologie und Boden, Issue 13, 3rd edition, Kiel 2011, ISBN 978-3-937937-37-3 , p. 67.

[4] Appendix 2 of the Landscape Development Plan (LEP) Ditmarschen, p. 2 , accessed on April 20, 2015

[5] Hansjörg Küster: History of the landscape in Central Europe: From the Ice Age to the present . CH Beck, 2010, ISBN 978-3-4066-0848-3 , p. 144.