Open AccessLate Weichselian‐Holocene foraminiferal stratigraphy and palaeohydrogrphic changes in the Gothenburg area, southwestern Sweden
Author(s) -
BERGSTEN HELENE,
DENNEGARD BENNETH
Publication year - 1988
Publication title -
boreas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.95
H-Index - 74
eISSN - 1502-3885
pISSN - 0300-9483
DOI - 10.1111/j.1502-3885.1988.tb00553.x
Subject(s) - holocene , geology , hydrography , stratigraphy , lithostratigraphy , pleistocene , paleontology , oceanography , ecological succession , boreal , arctic , structural basin , tectonics , ecology , biology
Marine clay from two cores (50 and 36m deep) from Gothenburg, southwestern Sweden, have been analysed using different stratigraphic methods. Foraminiferal stratigraphy complemented withe lithostratigraphy, pollen and mollusc analyses show an environmental succession from arctic conditions with water depths up to 100m during Late Welchselian time, to a boreal shallow water environment in early Holocene time. A comparison of the foraminiferal faunas with those from corresponding investigations from southern Bohuslän, NW of Gothenburg, shows a similar development in the two areas. The sudden environmental change around the Pleistocene/Holocene boundary (10,000 years B.P.) along the Swadish west coast is attributed to changes of the hydrographic patterns; a general shift of the circulation pattern of the Skagerrak/ Kattegat at that time and or a large supply of fresh water flowing into the area from the Lake Vanern basin.