Abstract

The UKCS (United Kingdom Continental Shelf) well 9/16-3 drilled on the western flank of the Beryl Embayment encountered a Middle Devonian sequence interpreted as part of the lacustrine Orcadian Basin. An anhydrite layer found within the sequence provides confirmation of the local development of hypersaline environments within the Orcadian Basin. Detailed geochemical analysis of a representative source interval equivalent to the Achanarras/Sandwick fish bed has revealed a close -affinity with contemporaneous Middle Devonian source rocks found in the Inner Moray Firth and crude oil from the Beatrice oil field.

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