Hydrocarbon source rocks, reservoir rocks and migration in the Orcadian Basin

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doi: 10.1144/sjg21030321
Authors:Parnell, John
Author Affiliations:Primary:
Queen's Univ. Belfast, Dep. Geol., Belfast, United Kingdom
Volume Title:Orcadian Basin
Volume Authors:Allison, Iain, editor; Biggar, Gordon M.; Brown, Stewart; Fannin, Nigel G. T.; Hall, Jeremy; Owen, Alan W.; Smythe, David K.; Trewin, Nigel H.; Grant, Douglas
Source:The Orcadian Basin, edited by Iain Allison, Gordon M. Biggar, Stewart Brown, Nigel G. T. Fannin, Jeremy Hall, Alan W. Owen, David K. Smythe, Nigel H. Trewin and Douglas Grant. Scottish Journal of Geology, 21(3), p.321-335. Publisher: Scottish Academic Press, Edinburgh, United Kingdom. ISSN: 0036-9276
Publication Date:1985
Note:In English. 39 refs.; 3 tables, geol. sketch maps
Summary:Rock-Eval pyrolysis data shows that the Old Red sandstone is a viable source rock for hydrocarbons in the Orcadian Basin, and that, generally, the sequence is not highly mature at present. Solvent-extracted pyrolysis data indicate that migrated hydrocarbons only form a significant proportion of the total organic carbon content where this is <1.5%. Hydrocarbons occur widely in mineral veins and fluviatile/aeolian sandstones; in sandstones they are often adjacent to major faults, along which they may have migrated. Much porosity in the sandstone is secondary after calcite dissolution which may have been related to Permian deep weathering. [R.A.H.]
Subjects:Carbon; Clastic rocks; Devonian; Economic geology; Energy sources; Faults; Genesis; Geochemistry; Maturity; Migration; Old Red Sandstone; Organic carbon; Organic compounds; Paleozoic; Porosity; Pyrolysis; Reservoir rocks; Sandstone; Sedimentary rocks; Source rocks; Weathering; Atlantic Ocean; Europe; Great Britain; North Atlantic; North Sea; Orcadian Basin; Scotland; United Kingdom; Western Europe; Organic materials
Coordinates:N573000 N603000 W0010000 W0040000
Abstract Numbers:86M/3417
Record ID:1986047164
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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