Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland

John Parnell; Stephen Bowden; Darren Mark

doi:10.1144/jgs2017-059

Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland

John Parnell, Stephen Bowden, Darren Mark

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Abstract

Fluid inclusion and organic biomarker data show that there was formerly a hydrocarbon system in the Cambro-Ordovician Laurentian margin rocks of NW Scotland. Oil fluid inclusions occur in stylolitized Eriboll Formation sandstone, in K-feldspar cements with an 40Ar/39Ar age of 415 ± 5.5 / 5.8 Ma (2 sigma, analytical precision / full external precision). Organic extracts from Durness Group black limestones yield biomarker ratios characteristic of high thermal maturity. Organic maturation to yield oil probably occurred during orogenic deformation along the Moine Thrust Zone. The recognition of a hydrocarbon system in Scotland adds to a huge hydrocarbon province in Laurentian rocks including North America and Greenland.

Original language	English
Pages (from-to)	33-43
Number of pages	11
Journal	Journal of the Geological Society
Volume	175
Issue number	1
Early online date	2 Oct 2017
DOIs	https://doi.org/10.1144/jgs2017-059
Publication status	Published - Jan 2018

Bibliographical note

NERC are thanked for continued funding of the Argon Isotope Facility, which is housed at SUERC. We are grateful to B. Fulton, J. Johnston and C. Taylor for skilled technical help. DM was in receipt of a NERC PhD studentship. A.G. Leslie and H. Volk provided critical comments that helped to improve the manuscript.

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10.1144/jgs2017-059Licence: CC BY

Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland
© 2018 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/). Published by The Geological Society of London. Publishing disclaimer: www.geolsoc.org.uk/pub_ethics
Final published version, 2.47 MBLicence: CC BY

Cite this

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title = "Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland",

abstract = "Fluid inclusion and organic biomarker data show that there was formerly a hydrocarbon system in the Cambro-Ordovician Laurentian margin rocks of NW Scotland. Oil fluid inclusions occur in stylolitized Eriboll Formation sandstone, in K-feldspar cements with an 40Ar/39Ar age of 415 ± 5.5 / 5.8 Ma (2 sigma, analytical precision / full external precision). Organic extracts from Durness Group black limestones yield biomarker ratios characteristic of high thermal maturity. Organic maturation to yield oil probably occurred during orogenic deformation along the Moine Thrust Zone. The recognition of a hydrocarbon system in Scotland adds to a huge hydrocarbon province in Laurentian rocks including North America and Greenland.",

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AB - Fluid inclusion and organic biomarker data show that there was formerly a hydrocarbon system in the Cambro-Ordovician Laurentian margin rocks of NW Scotland. Oil fluid inclusions occur in stylolitized Eriboll Formation sandstone, in K-feldspar cements with an 40Ar/39Ar age of 415 ± 5.5 / 5.8 Ma (2 sigma, analytical precision / full external precision). Organic extracts from Durness Group black limestones yield biomarker ratios characteristic of high thermal maturity. Organic maturation to yield oil probably occurred during orogenic deformation along the Moine Thrust Zone. The recognition of a hydrocarbon system in Scotland adds to a huge hydrocarbon province in Laurentian rocks including North America and Greenland.

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DO - 10.1144/jgs2017-059

M3 - Article

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JO - Journal of the Geological Society

JF - Journal of the Geological Society

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Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland

Abstract

Bibliographical note

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