Kinematic and tectonic significance of microstructures and crystallographic fabrics within quartz mylonites from the Assynt and Eriboll regions of the Moine thrust zone, NW Scotland

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Authors:Law, R. D.; Casey, M.; Knipe, R. J.
Author Affiliations:Primary:
Univ. Leeds, Dep. Earth Sci., Leeds, United Kingdom
ETH-Zent, Geol. Inst., Switzerland
Volume Title:Transactions of the Royal Society of Edinburgh: Earth Sciences
Source:Transactions of the Royal Society of Edinburgh: Earth Sciences, 77(2), p.99-125. Publisher: Royal Society of Edinburgh, Edinburgh, United Kingdom. ISSN: 0263-5933
Publication Date:1986
Note:In English. 66 refs.; illus. incl. 1 table, geol. sketch maps
Summary:Using a combination of optical microscopy and X-ray texture goniometry, a correlation is established between shape fabric symmetry and pattern of crystallographic preferred orientation. Quartz a-axis fabrics obtained from X-ray goniometry are more sensitive to variations in shape fabric symmetry than optically-measured c-axis fabrics. At the Stack of Glencoul, at >30 cm beneath the Moine thrust coaxial deformation is indicated, but closer to the thrust there is evidence for non-coaxial deformation. [R.A.H.]
Subjects:Assyntic Orogeny; Faults; Foliation; Interpretation; Kinematics; Lineation; Metamorphic rocks; Moinian; Mylonites; Neoproterozoic; Orogeny; Petrofabrics; Precambrian; Preferred orientation; Proterozoic; Structural analysis; Structural geology; Tectonics; Thrust faults; Upper Precambrian; X-ray analysis; Europe; Great Britain; Scotland; United Kingdom; Western Europe; Eriboll region; Evolution; Moine Zone; Northwestern Scotland
Coordinates:N574000 N584000 W0043000 W0053000
Abstract Numbers:87M/6921
Record ID:1987012880
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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