Late Quaternary history of Lammefjorden, north-west Sjælland, Denmark
Open Access
- 25 June 2020
- journal article
- research article
- Published by Geological Survey of Denmark and Greenland in GEUS Bulletin
Abstract
Lammefjorden is a reclaimed fjord in north-west Sjælland, Denmark. Sediment cores from the area were collected to study its development after the last deglaciation, in particular the sea-level history. Late glacial and Early Holocene lake and bog deposits occur below marine deposits. Sparse late glacial fossil assemblages indicate tree-less environments with dwarf-shrub heaths. Early Holocene deposits contain remains of Betula sec. Albae sp. and Pinus sylvestris, which indicate open forests. The wetland flora comprised the calciphilous reed plant Cladium mariscus and the water plant Najas marina. Marine gyttja from basins is characterised by sparse benthic faunas, probably due to high sedimentation rates. In some areas, shell-rich deposits were found, with large shells of Ostrea edulis, indicative of high summer temperatures, high salinity and strong tidal currents. A marine shell dated to 6.7 cal. ka provides a minimum age for the marine transgression of Lammefjorden.Keywords
This publication has 4 references indexed in Scilit:
- Sea level and global ice volumes from the Last Glacial Maximum to the HoloceneProceedings of the National Academy of Sciences of the United States of America, 2014
- Cosmogenic surface exposure dating the last deglaciation in Denmark: Discrepancies with independent age constraints suggest delayed periglacial landform stabilisationQuaternary Geochronology, 2012
- Holocene temporal and spatial variation in the radiocarbon reservoir age of three Danish fjordsBoreas, 2009
- Late- and postglacial history of the Great Belt, DenmarkBoreas, 2004