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An integrated palynological-palynofacies approach to the zonation of the Paleogene in the Forties-Montrose Ridge area, central North Sea

Lookup NU author(s): Dr Richard Tyson


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A palynological and palynofacies study of late Paleocene and early Eocene sediments of the central North Sea has been undertaken using 467 core samples from 11 wells on the Forties-Montrose Ridge. Conventional dinoflagellate cyst (dinocyst) biostratigraphy gives poor precision within the narrow (c. 2.5 million years) time interval studied. Furthermore, dinocysts are often present in only very low numbers and are frequently poorly preserved. An alternative local zonation scheme is proposed on the basis of downwell variations in quantitative palynofacies and palynomorph occurrence data, and on angiosperm pollen ratios. Integration of these three sets of data indicates a potential sevenfold subdivision of the mid-Sele Formation (S2) to upper Lista Formation (L3) interval in this area, with up to five divisions within the Forties Sandstone Member. This composite zonation scheme appears to work reasonably well for the studied wells, and preliminary comparisons with independent biostratigraphic data from two of our wells indicate a partial correlation with the dinocyst zones.

Publication metadata

Author(s): Wood S, Tyson RV

Publication type: Article

Publication status: Published

Journal: Geological Society Special Publication

Year: 1996

Issue: 101

Pages: 121-128

Print publication date: 01/01/1996

ISSN (print): 0305-8719

ISSN (electronic):

Publisher: Geological Society Publishing House


DOI: 10.1144/GSL.SP.1996.101.01.08


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