Detailed nannofossil biostratigraphy of the the cored upper Maastrichtian – Danian section of the N-22X well was carried out as part of the PhD study ‘Upper Maastrichtian – Danian nannofossils of the Danish Central Graben and the Danish Basin: a combined biostratigraphic – palaeoecological approach’ (Sheldon 2006). The N-22X well (also known as Deep Gorm) was drilled in 1987 as a deviated exploration well on the Gorm Field in the Danish Sector of the North Sea (Figure 1). The following report presents a biostratigraphic breakdown of the cored chalk section of the well, based on nannofossils.
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- Programområde 3: Energiressourcer