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Microfaunas, microfloras and the environmental stratigraphy of the Late Glacial and Holocene in Cardigan Bay
Author(s) -
Haynes J. R.,
Kiteley R. J.,
Whatley R. C.,
Wilks P. J.
Publication year - 1977
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350120203
Subject(s) - geology , marine transgression , glacial period , holocene , bay , meltwater , sea level , varve , paleontology , oceanography , structural basin , sediment
The distribution of foraminifers, ostracods, diatoms and pollen is studied in cores from submarine boreholes. This reveals that the history of the Flandrian transgression is largely the record of the infilling of meltwater channels cut during the early Late Glacial with transgressive estuarine and finally marine deposits. It also supports the idea of the ‘climatic earliness’ of the Welsh seaboard at all stages. Estuarine deposits in excess of —51 m O.D. suggest that Late Glacial sea levels were initially as low as —60 m O.D. and support the idea that the Welsh ice withdrew before 14,000 years B.P. The sea‐level rise plots as a smooth curve but was probably episodic in its early phases.