Universität zu Köln

Bennike, Ole ORCID: 0000-0002-5486-9946, Jensen, Jorn Bo, Norgaard-Pedersen, Niels, Andresen, Katrine Juul, Seidenkrantz, Marit-Solveig ORCID: 0000-0002-1973-5969, Moros, Matthias and Wagner, Bernd ORCID: 0000-0002-1369-7893 (2021). When were the straits between the Baltic Sea and the Kattegat inundated by the sea during the Holocene? Boreas, 50 (4). S. 1079 - 1095. HOBOKEN: WILEY. ISSN 1502-3885

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Abstract

The timing of the flooding of the Danish/German/Swedish straits and the first marine influence in the Baltic Basin after the Ancylus Lake stage has been much debated. Here we present 47 new radiocarbon ages from sediment cores retrieved from Danish waters, ages that record the marine transgression of the area. Most of the ages are based on shells of marine molluscs, hence the ages are uncertain because we do not know the precise reservoir age in the past. We use a reservoir age of 400 years, which is based on dating of museum specimens collected live before testing of nuclear bombs. It appears from the ages that the Great Belt (Storeb AE lt) was inundated before The Sound (oresund). The oldest ages on marine shells from the northern part of the Great Belt region are about 8.9 cal. ka BP. From the central part of the Great Belt, the oldest ages are about 8.2 cal. ka BP, in Mecklenburg Bay 8.1 cal. ka BP and in the Arkona Basin 7.1 cal. ka BP. Sediments deposited prior to the occurrence of marine molluscs contain brackish-water ostracods (Cyprideis torosa and Cytheromorpha fuscata); the sediments are usually laminated and non-bioturbated mud. The brackish-water phase may have lasted 500-1000 years. The youngest lake deposits without signs of marine influence are dated to c. 8.8 cal. ka BP (central Great Belt), 8.7 cal. ka BP (Little Belt) and 8.5 cal. ka BP (Arkona Basin). We see no evidence for marine influence at c. 10 cal. ka BP as recorded by some studies from the Baltic Basin.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bennike, Ole UNSPECIFIED orcid.org/0000-0002-5486-9946 UNSPECIFIED Jensen, Jorn Bo UNSPECIFIED UNSPECIFIED UNSPECIFIED Norgaard-Pedersen, Niels UNSPECIFIED UNSPECIFIED UNSPECIFIED Andresen, Katrine Juul UNSPECIFIED UNSPECIFIED UNSPECIFIED Seidenkrantz, Marit-Solveig UNSPECIFIED orcid.org/0000-0002-1973-5969 UNSPECIFIED Moros, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-586061
DOI:	10.1111/bor.12525
Journal or Publication Title:	Boreas
Volume:	50
Number:	4
Page Range:	S. 1079 - 1095
Date:	2021
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1502-3885
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LATE QUATERNARY GEOLOGY; GREAT BELT; LAST DEGLACIATION; SOUTHERN KATTEGAT; LAKE DEPOSITS; RESERVOIR AGE; SEDIMENT CORE; LEVEL CHANGES; DARSS SILL; ICE LAKE Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58606