Microstructural analysis and tectonic evolution in thrust systems; examples from the Assynt region of the Moine Thrust zone, North-west Scotland

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Authors:Knipe, Robert J.
Author Affiliations:Primary:
Univ. Essex, United Kingdom
Other:
Univ. Coll. London, United Kingdom
Volume Title:Deformation processes in minerals, ceramics and rocks
Volume Authors:Barber, David J., editor; Meredith, Philip G.
Source:p.228-261; Deformation processes in minerals, ceramics and rocks, London, United Kingdom, Apr. 1987, edited by David J. Barber and Philip G. Meredith. Publisher: Unwin Hyman, London, United Kingdom
Publication Date:1990
Note:In English. 78 refs.; illus.
Summary:The microstructures preserved in the deformed quartzites of the Moine thrust zone in Assynt indicate the operation of a range of deformation mechanisms which reflect the range of conditions associated with displacement on different faults. Rocks from each of the thrust sheets show evidence of different deformation- mechanism paths and different forms of cyclic deformation. The strain path in the higher-level thrust sheets changes from shearing-dominated deformation to vertical shortening by diffusive mass transfer. The cataclastic fault rocks show preferential modification (annealing) of earlier microstructures, which may have been aided by the high dislocation densities and higher water contents of these rocks. [R.A.H.]
Subjects:Deformation; Field studies; Morphostructures; Mylonitization; Shear zones; Structural analysis; Structural geology; Tectonics; Assynt; Europe; Great Britain; Highland region Scotland; Moine thrust zone; Scotland; Sutherland Scotland; United Kingdom; Western Europe; Northwestern Scotland
Abstract Numbers:91M/3668
Record ID:1990068880
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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