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- W2890469634 abstract "Palynological investigation on the Cretaceous-Tertiary transition in the bore hole N° CM5, drilled in the Atlantic Ocean, off the Senegal coast, West Africa, has been carried out. According to the stratigraphie data provided by Dr. A. Ly. The top of the Maastrichtian is marked approximately at 952 m. The present study is aimed to detail out palynological data and correlate with stratigraphie information. Samples of the sediments between 1002-944 m level have been investigated in detail. It is observed that palynological assemblage recovered from sediments at 1002-958 m show an almost uniform distribution of taxa. Significant Maastrichtian marker taxa, namely Diporoconia iszkaszentgyoergyi, Ariadnaesporites ariadnae, Gabonisporites vigourouxii, Periretisyncolpite magnosagenalus, Tercissiis grandis, Longapertites marginatiis, etc. are recorded. These marker taxa disappear at 958 m level and an abundance of pteridophytic spores is noticed. Thus a major change in floral composition is recorded at this level marking K/T boundary, which is characterised by the disappeareancc of Maastrichtian marker taxa and presence of a fern spike. Such major floral change is attributed to a possible influence of K/T events." @default.
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- W2890469634 date "1998-01-01" @default.
- W2890469634 modified "2023-10-14" @default.
- W2890469634 title "Palynology of the Cretaceous » Tertiary transition in an Atlantic Bore Hole off Senegal, West Africa" @default.
- W2890469634 doi "https://doi.org/10.3406/geolm.1998.1612" @default.
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