Universität zu Köln

Scheder, Juliane ORCID: 0000-0001-9974-2802, Engel, Max ORCID: 0000-0002-2271-4229, Bungenstock, Friederike, Pint, Anna, Siegmueller, Annette, Schwank, Stephan and Brueckner, Helmut (2018). Fossil bog soils ('dwog horizons') and their relation to Holocene coastal changes in the Jade Weser region, southern North Sea, Germany. J. Coast. Conserv., 22 (1). S. 51 - 70. NEW YORK: SPRINGER. ISSN 1874-7841

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Abstract

After the deceleration of the postglacial marine transgression, the German North Sea coast was subject to deposition of a complex pattern of subtidal to terrestrial facies. This study aims at reconstructing these facies changes in the 'Land Wursten' region (Lower Saxony) by focussing on so-called dwog horizons (incipient soil horizons of the pre-engineered salt marshes). We explore their implications for relative sea-level reconstructions and their indication for early settlement activities. Archive drilling data (1960, provided by the 'Landesamt fur Bergbau, Energie und Geologie') were analysed to create five high-resolution stratigraphic cross sections. Three new drilling records were subjected to sedimentological and microfaunal investigations and interpreted to verify and calibrate the archive data. Two dwog horizons were found and C-14-AMS dated. We found basal salt marsh deposits inundated by a high-energy event and covered by tidal flat sediments. The thick tidal flat unit is again overlain by salt marsh deposits indicating the transition from a shallow marine to a terrestrial environment where dwogs were developed and covered by episodic marine incursions. The ages of the dwogs (1128-969 cal BC; cal AD 1426-1467) do not correlate with known layers of adjacent settlement sites and are critically discussed. However, we show that they correlate with phases of stagnant regional relative sea level (RSL) and can be used as RSL indicators. The combined archive and modern data provide valuable information for the RSL reconstruction and palaeoenvironmental changes. However, further research is recommended to accomplish more detailed information about coastal response during the Holocene sea-level changes and implications for settlement dynamics.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Scheder, Juliane UNSPECIFIED orcid.org/0000-0001-9974-2802 UNSPECIFIED Engel, Max UNSPECIFIED orcid.org/0000-0002-2271-4229 UNSPECIFIED Bungenstock, Friederike UNSPECIFIED UNSPECIFIED UNSPECIFIED Pint, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Siegmueller, Annette UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwank, Stephan UNSPECIFIED UNSPECIFIED UNSPECIFIED Brueckner, Helmut UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-197647
DOI:	10.1007/s11852-017-0502-z
Journal or Publication Title:	J. Coast. Conserv.
Volume:	22
Number:	1
Page Range:	S. 51 - 70
Date:	2018
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1874-7841
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LEVEL CHANGE; SIZE DISTRIBUTION; LOWER SAXONY; MARINE; EUROPE; NETHERLANDS; PLEISTOCENE; EVOLUTION; SEDIMENTS; BELGIUM Multiple languages Biodiversity Conservation; Environmental Sciences; Marine & Freshwater Biology; Water Resources Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19764