Extensional tectonics of the Outer Hebrides fault zone, South Uist, Northwest Scotland

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doi: 10.1017/S0016756801005325
Authors:Osinski, G. R.; Alsop, G. I.; Oliver, G. J. H.
Author Affiliations:Primary:
University of St. Andrews, School of Geography and Geosciences, Fife, United Kingdom
Volume Title:Geological Magazine
Source:Geological Magazine, 138(3), p.325-344. Publisher: Cambridge University Press, London, United Kingdom. ISSN: 0016-7568
Publication Date:2001
Note:In English. 51 refs.; illus., incl. block diags., sects., 1 table, geol. sketch map
Summary:Large amounts of pseudotachylyte which characterize the Outer Hebrides fault zone in South Uist may in part be lithologically controlled and therefore of little use in determining areas of greatest deformation and displacement. The tectonics of this fault zone are dominated by structures associated with several episodes of brittle extensional deformation, which are progressively overprinted by protophyllonitic and phyllonitic fabrics. Field evidence suggests that this section of the Outer Hebrides thrust zone may have been largely unaffected by the sinistral strike-slipe reactivation reported to the N, suggesting both a varied and compartmentalized tectonic and evolutionary history along the length of the Outer Hebrides fault zone. [R.A.H.]
Subjects:Deformation; Extension tectonics; Fault zones; Faults; Metamorphic rocks; Metamorphism; Mylonites; Pseudotachylite; Tectonics; Europe; Great Britain; Hebrides; Outer Hebrides; Scotland; United Kingdom; Western Europe; Northwestern Scotland; Outer Hebrides fault zone; Uist Scotland
Coordinates:N570000 N583000 W0060000 W0070000
Abstract Numbers:01M/4420
Record ID:2002006354
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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