A high-quality annually laminated sequence from Lake Belau, Northern Germany: Revised chronology and its implications for palynological and tephrochronological studies.

Dörfler, W., Feeser, I., van den Bogaard, Christel, Dreibrodt, S., Erlenkeuser, H., Kleinmann, A., Merkt, J. and Wiethold, J. (2012) A high-quality annually laminated sequence from Lake Belau, Northern Germany: Revised chronology and its implications for palynological and tephrochronological studies. Open Access The Holocene, 22 (12). pp. 1413-1426. DOI 10.1177/0959683612449756.

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Abstract

The annually laminated record of Lake Belau offers an exceptional opportunity to investigate with high temporal resolution Holocene environmental change, aspects of climate history and human impact on the landscape. A new chronology based on varve counts, 14C-datings and heavy metal history has been established, covering the last 9400 years. Based on multiple varve counting on two core sequences, the easily countable laminated section spans about 7850 varve years (modelled age range c. 9430 to 1630 cal. BP). Not all of the record is of the same quality but approximately 69% of the varves sequence is classified to be of high quality and only c. 5% of low quality. The new chronology suggests dates generally c. 260 years older than previously assumed for the laminated section of the record. The implications for the vegetation and land-use history of the region as well as revised datings for pollen stratigraphical events are discussed. Tephra analysis allowed the identification of several cryptotephra layers. New dates for volcanic eruptions are presented for the Lairg B event (c. 6848 cal. BP, 2s range 6930–6713 cal. BP), the Hekla 4 event (c. 4396 cal. BP, 2s range 4417–4266 cal. BP), and Hekla 3 eruption (c. 3095 cal. BP, 2s range 3120–3068 cal. BP).

Document Type: Article
Additional Information: WOS:000311422000007
Keywords: annually laminated sediment, Holocene, Northern Germany, palynology, tephrochronology, varve chronology; ATMOSPHERIC LEAD-DEPOSITION; TEPHRA LAYERS; SEDIMENTS; HOLOCENE; EUROPE; PB-210; CS-137; MICROANALYSIS; SWITZERLAND; RECORDS
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1177/0959683612449756
ISSN: 0959-6836
Date Deposited: 11 Dec 2012 09:20
Last Modified: 25 May 2016 12:28
URI: http://oceanrep.geomar.de/id/eprint/19649

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