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Paleotidal levels in tidal sediments (3800-3635 BP); compaction, sea level rise and human occupation (3275-2620 BP) at Bovenkarspel, NW Netherlands
Roep, Th.B.; van Regteren Altena, J.F. (1988). Paleotidal levels in tidal sediments (3800-3635 BP); compaction, sea level rise and human occupation (3275-2620 BP) at Bovenkarspel, NW Netherlands, in: de Boer, P.L. et al. (Ed.) Tide-influenced sedimentary environments and facies. Extended versions of papers presented at the Symposium on Classic Tidal Deposits, held August 1985 in Utrecht, Netherlands. pp. 215-231
In: de Boer, P.L. et al. (Ed.) (1988). Tide-influenced sedimentary environments and facies. Extended versions of papers presented at the Symposium on Classic Tidal Deposits, held August 1985 in Utrecht, Netherlands. D. Reidel Publishing: Dordrecht. ISBN 90-277-2622-1. ix, 530 pp., more

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Keyword
    Marine

Authors  Top 
  • Roep, Th.B.
  • van Regteren Altena, J.F.

Abstract
    The infilling of a tidal basin is described with emphasis on the infilling of the main tidal channel, about 35 km east of the inlet. Paleo-MHW (circa 3700 BP) was about 1.60 m below Dutch Ordnance Level (DOL = approximately Mean Sea Level) based on the occurrence of heavy clay with Scrobicularia plana (tidal mud flat) and the deepest crinkly laminations (saltmarsh). Paleo-MLW was about - 3 meter DOL, based on the heights of unvegetated levees, waterlogged clays and a slope break in channel deposits. Indirectly, paleo-MLW was found using the tidal amplitude, constructed from local MHW and regional MSL. These methods indicate a tidal amplitude of about 1.40 m. Maximum compaction in the study area is about 1 meter, most occurred after closure of the inlet (after 3500 BP) and before the Bronze Age colonization (3275 BP). From a MSL trend curve established in the coastal barriers it can be deduced that MSL rose about 0.75 meter between 3275 BP (colonization) and 2620 BP (desertion). People left the area mainly because of this rise of sea level.

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