Using basement-hosted clastic dykes as syn-rifting palaeostress indicators; an example from the basal Stoer Group, Northwest Scotland

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doi: 10.1017/S0016756899002605
Authors:Beacom, L. E.; Anderson, T. B.; Holdsworth, R. E.
Author Affiliations:Primary:
Queen's University of Belfast, Department of Geology, Belfast, United Kingdom
Other:
University of Durham, United Kingdom
Volume Title:Geological Magazine
Source:Geological Magazine, 136(3), p.301-310. Publisher: Cambridge University Press, London, United Kingdom. ISSN: 0016-7568
Publication Date:1999
Note:In English. 34 refs.; illus., incl. geol. sketch map
Summary:The clastic infills of fractures or clastic veins in basement rocks immediately underlying sedimentary cover sequences can be used to date fault movements if these demonstrably occurred at the time of infilling prior to lithification of the entrained clastic material, thus allowing reconstruction of the syn-rifting palaeostress using stress inversion techniques. Examples are described from the Torridonian Stoer group sediments at Clachtoll and Gairloch, NW Scotland, which provide hitherto unrecognized constraints on Proterozoic plate movements in this region. [R.A.H.]
Sections:Petrology
Subsections:General
Subjects:Basement; Clastic dikes; Clastic rocks; Deformation; Displacements; Extension tectonics; Faults; Half grabens; Kinematics; Laurentia; Lithofacies; Neoproterozoic; Normal faults; Plate tectonics; Precambrian; Proterozoic; Rifting; Riphean; Sedimentary rocks; Sedimentary structures; Soft sediment deformation; Stress; Synsedimentary processes; Tectonics; Torridonian; Unconformities; Upper Precambrian; Veins; Europe; Great Britain; Scotland; United Kingdom; Western Europe; Oblique sinistral normal faults; Stoer Group
Abstract Numbers:99M/4175
Record ID:1999055424
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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