Acknowledgements MB is in receipt of a PhD studentship from the Petroleum Technology Development Fund of Nigeria. LB is supported by NERC grant NE/M010953/1. C. Taylor, W. Ritchie and J. Johnston provided skilled technical support. Sulphur isotope measurements were made at SUERC. The manuscript benefitted substantially from the careful reviews of A.G. Leslie and an anonymous referee.Peer reviewedPublisher PD

Baba, Mas'Ud

Bowden, Stephen

Bullock, Liam

Parnell, John

Marine and Petroleum Geology

English

John Parnell

Mas'ud Baba

Stephen Bowden

Liam Bullock

Crossref

Geochemistry and origin of organic-rich sediment veins in fractured granitic basement, Helmsdale, Sutherlandshire, UK

Black sediment veins up to 2 cm width penetrate the Caledonian Helmsdale Granite in the vicinity of the Helmsdale Fault, onshore Moray Firth. The black colour and geochemistry of the veins reflect a high content of organic carbon. Both Devonian and Jurassic shales are conceivable available sources, but sterane compositions relate the organic matter to the Jurassic shales. A content of extractable organic matter higher than in the shales suggests that the carbon in the veins represents oil rather than mechanically mobilized shale. The oil was present during sediment vein emplacement. The veins were emplaced forcefully, which may reflect high fluid pressure associated with post-Jurassic movement on the Helmsdale Fault

Baba, Mas'ud

Southampton (e-Prints Soton)

Acknowledgements MB is in receipt of a PhD studentship from the Petroleum Technology Development Fund of Nigeria. LB is supported by NERC grant NE/M010953/1. C. Taylor, W. Ritchie and J. Johnston provided skilled technical support. Sulphur isotope measurements were made at SUERC. The manuscript benefitted substantially from the careful reviews of A.G. Leslie and an anonymous referee.Peer reviewe

Aberdeen University Research

https://aura.abdn.ac.uk/bitstream/2164/9215/1/Geochemistry_and_origin_of_organic_rich_sediment_veins_in_fractured.pdf

Geochemistry and origin of organic-rich sediment veins in fractured granitic basement, Helmsdale, Sutherlandshire, UK

Abstract

Similar works

Full text

Available Versions

Crossref

Southampton (e-Prints Soton)

Aberdeen University Research