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Palaeocene and Lower Eocene palynology and palynofacies of the Viking Graben, North Sea

Goodall, Jeffery Graham Stephen; (1993) Palaeocene and Lower Eocene palynology and palynofacies of the Viking Graben, North Sea. Doctoral thesis (Ph.D), UCL (University College London). Green open access

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Abstract

A large quantitative data base on Palaeogene (Danian - Middle Eocene) kerogen and palynomorph distributions has been assembled, based on the analysis of 270 core and outcrop samples from 13 wells in the Viking Graben (northern North Sea) and field sections in Thanet (Kent) and Spitsbergen. This data base has been related to the regional lithostratigraphy and placed within a sequence stratigraphic model. This has been facilitated by the development of a refined dinocyst zonation scheme comprising 23 zones for the studied interval. This zonation has been independently supported by cluster analysis of the dinocyst distributions. The data have demonstrated a strong and consistent relationship between the global sea level curve, lithofacies (reservoir and source rock) development, Sediment accumulation rate, dinocyst event stratigraphy, and palynofacies patterns. Palynofacies criteria have been developed to distinguish between turbiditic and hemipelagic shale facies, nearshore versus offshore, oxic versus dysoxic - anoxic, and proximal (high sediment accumulation rate) versus distal (low sediment accumulation rate) facies. Palynological criteria have also been developed for the recognition of individual Formations/Members, seismic sequences, condensed sections, and specific highstand shale units and marine flooding surfaces. Palynological parameters found to be particularly useful in facies discrimination include dinocyst dominance and diversity, extinction events, and palaeoecological groupings. The study has demonstrated the ability of palynology and palynofacies to integrate seismic stratigraphic and sedimentological observations into a coherent depositional model with predictive capability. The success of the approach depends upon a careful sampling strategy and on the collection of quantitative data.

Type: Thesis (Doctoral)
Qualification: Ph.D
Title: Palaeocene and Lower Eocene palynology and palynofacies of the Viking Graben, North Sea
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Thesis digitised by ProQuest.
Keywords: Earth sciences; North Sea; Palynology
URI: https://discovery.ucl.ac.uk/id/eprint/10104437
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