Organic maturation, thermal history and hydrocarbon generation in the Orcadian Basin, Scotland

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doi: 10.1144/gsjgs.149.4.0491
Authors:Hillier, S.; Marshall, J. E. A.
Author Affiliations:Primary:
University of Southamption, Department of Geology, Southampton, United Kingdom
Volume Title:Journal of the Geological Society of London
Source:Journal of the Geological Society of London, 149(4), p.491-502. Publisher: Geological Society of London, London, United Kingdom. ISSN: 0016-7649
Publication Date:1992
Note:In English. 56 refs.; illus., incl. 1 table, geol. sketch maps
Summary:This Devonian basin contains thick sequences of organic-rich lacustrine sediment; the range of organic maturation is large, spore colours vary from yellow-orange to black, and vitrinite reflectance for Type III kerogens ranges from 0.7 to 10.5%. Maximum palaeotemperatures are estimated to range from those typical of moderate burial diagenesis (100 degrees C) to those characteristic of greenschist-facies metamorphism (400 degrees C). The highest maturities are related to contact metamorphism by Devonian plutons; it is postulated that a large pluton underlies much of Caithness. [R.A.H.]
Subjects:Contact metamorphism; Depositional environment; Devonian; Intrusions; Lacustrine environment; Lithostratigraphy; Maturity; Metamorphism; Paleozoic; Petroleum; Plutons; Sedimentary rocks; Source rocks; Temperature; Vitrinite reflectance; Atlantic Ocean; Atlantic Ocean Islands; Europe; Great Britain; North Atlantic; North Sea; Orcadian Basin; Orkney Islands; Scotland; Shetland Islands; United Kingdom; Western Europe
Coordinates:N570000 N610000 W0010000 W0050000
Abstract Numbers:93M/2057
Record ID:2008063285
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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