40Ar/39Ar dating of oil generation and migration at complex continental margins

Mark, D. , Parnell, J., Kelley, S.P., Lee, M. and Sherlock, S.S. (2010) 40Ar/39Ar dating of oil generation and migration at complex continental margins. Geology, 38(1), pp. 75-78. (doi: 10.1130/G30237.1)

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Publisher's URL: http://www.geology.gsapubs.org

Abstract

Oil-bearing fl uid inclusions trapped within authigenic K-feldspar in Late Jurassic reservoirs throughout the UK Atlantic margin are evidence for an early oil migration event from Late Jurassic source rocks in the Faeroe-Shetland Basin. Previous compound-specifi c isotope studies confi rm the hydrocarbon provenance. Temperaturecomposition- time data show that the Late Jurassic source rocks were oil mature 113 ± 3.5 Ma (2σ). This new 40Ar/39Ar authigenic K-feldsparage shows that the Late Jurassic source rocks were oil mature 30–40 m.y. prior to current estimates.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Mark, Professor Darren and Lee, Professor Martin
Authors: Mark, D., Parnell, J., Kelley, S.P., Lee, M., and Sherlock, S.S.
Subjects:G Geography. Anthropology. Recreation > GE Environmental Sciences
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Geology
Publisher:Geological Society of America
ISSN:0091-7613
ISSN (Online):1943-2682

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
451491Investigating the effects of recrystallisation and deformation on alkali feldspar crystals - implications for the Ar/Ar systemMartin LeeNatural Environment Research Council (NERC)NE/E016294/1SCHOOL OF GEOGRAPHICAL & EARTH SCIENCES