Title
First indication of Storegga tsunami deposits from East Greenland
Author
Wagner, B.
Bennike, O.
Klug, M.
Cremer, H.
TNO Bouw en Ondergrond
Publication year
2007
Abstract
A 2.73 m long sediment sequence from Loon Lake, located at 18m a.s.l. on outer Geographical Society Ø, East Greenland, was investigated for its chronology and changes in physical and biogeochemical properties, macrofossils, and grain-size distribution. The predominance of marine fossils throughout the sequence, dated by 14C AMS to between 8630 and 7535 cal. yr BP, shows that the Loon Lake at that time was a marine basin, which according to existing sea-level curves was about 15-35 m deep. The sequence mainly consists of fine grained homogeneous sediments, which are interrupted by a 0.72 m thick sandy horizon with erosive basis and distinct fluctuations in the grain-size distribution and in the physical and biogeochemical properties. According to the radiocarbon dates, this sandy horizon was deposited after 8500-8300 cal. yr BP and is interpreted as originating from the Storegga tsunami. The record from Loon Lake provides the first indication of Storegga tsunami deposits from East Greenland. Copyright © 2006 John Wiley & Sons, Ltd.
Subject
Geosciences
Coastal basin
East Greenland
Holocene
Relative sea level
Storegga tsunami deposits
biogeochemistry
fine grained sediment
radiocarbon dating
sea level change
sedimentary sequence
sequence stratigraphy
tsunami
Arctic
East Greenland
Greenland
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TNO identifier
239962
ISSN
0267-8179
Source
Journal of Quaternary Science, 22 (4), 321-325
Document type
article