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| Titel |
Lithostratigraphic and geochemical study of coastal deposits in Belgium. Implications for the age of the deposits and for comparative bivalve-speleothem environmental reconstruction. |
| VerfasserIn |
Sophie Verheyden, Frieda Bogemans, Thierry Backeljau, Cecile Baeteman |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250074206
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| Zusammenfassung |
| Two sediment cores from the Western Belgian coastal plain are studied in the frame of the
BiSpEem project, which aims at Pleistocene environmental reconstruction through
comparison of bivalves from the coast and independently dated speleothems (chemical cave
deposits).
Pleistocene sediments from Leeuwenhof and Zoutenaaie contain numerous respectively
Cerastoderma and Corbicula shells. First results of AAR dating on these shells
suggest a MIS5d or older age for Leeuwenhof sediments and a MIS7 or 9 age for
Zoutenaaie sediments. However, significant uncertainties on the AAR datings, as
well as possible discrepancies between the species identification and stratigraphic
(MIS 5e or older) and AAR (MIS 7 or 9) results from Zoutenaaie require further
investigation.
Raman spectrometric and stable oxygen and carbon isotopic measurements on the shells
indicate only minor or no diagenetic changes, a positive argument to attempt U/Th dating on
the shells and to investigate the possibility to correlate δ18O of the shells with δ18O of inland
speleothems.
More info on the BiSpEem project: www.naturalsciences.be/geology/research/environment/bispeem |
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