Open AccessTerrestrial biotas and environmental changes during the late Middle Weichelian in north Jutland, Denmark
Author(s) -
M. Houmark Nielsen,
Ole Bennike,
Siwan Björck
Publication year - 1996
Publication title -
bulletin of the geological society of denmark
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.674
H-Index - 28
eISSN - 2245-7070
pISSN - 0011-6297
DOI - 10.37570/bgsd-1996-43-16
Subject(s) - macrofossil , radiocarbon dating , glacial period , geology , physical geography , steppe , vegetation (pathology) , paleontology , glacier , mammoth , holocene , archaeology , geography , medicine , pathology
Studies of glaciotectonized sub-till lacustrine deposits in Lønstrup Klint andLodbjerg Klint, northern Jylland, Denmark, show the presence of plant and animal remains from the Middle Weichselian "mammoth steppe". Radiocarbon dateson picked-out plant fragments yield ages around 30 ka BP, and a macrofossil plantassemblage in the lake sediments indicates that uplands were covered by an open,tree-less vegetation with herbs and scattered shrubs. Mean July temperatures wereprobably at least 6°C lower than at present. The datings suggest a change frommarine to glacio-lacustrine environments in Vendsyssel slightly before 30 ka BP.Glacial thrusting and subsequent deposition of the youngest till in the region wasconnected with the Late Weichselian glacial maximum, the Jylland stade, andglaciation commenced some time after 30 ka BP.