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VII.—The Structural History of the Moine Thrust Zone at Lochcarron, Wester Ross*

Published online by Cambridge University Press:  30 May 2017

M. R. W. Johnson
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Synopsis

Torridonian and Lewisian rocks lying in inverted order between the Kishorn thrust and the Moine thrust, and Moine rocks, lying above the Moine thrust, exhibit a remarkable parallelism of structure.

New evidence shows that three sets of minor structures have been developed in the formations during the Caledonian movements. At least two of these sets pre-date the Moine thrust movements. The mylonites, which are not restricted to the vicinity of the Moine thrust outcrop, belong to an earlier movement phase than these structures and are not directly related to the clean-cut thrust movements. They appear to represent narrow zones of shearing and sliding, mainly within the Lewisian gneisses that developed early in the Caledonian orogeny.

There is reason to suppose that the inversion of the rocks to the west of the Moine thrust occurred before the formation of the minor structures recognized in the paper.

The minor structures are described and their order of formation established. The plastic, para-crystalline style of the earlier deformation is contrasted with the post-crystalline brittle style of the later deformations.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 64 , Issue 7: 1958-1959 The Structural History of the Moine Thrust Zone at Lochcarron, Wester Ross , 1960 , pp. 139 - 168
Copyright
Copyright © Royal Society of Edinburgh 1959

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Footnotes

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland. Trans. Roy. Soc. Edin., Vol. LXIV, No. 7, 1958–59

References

References to Literature

Bailey, E. B., 1939. “Caledonian Tectonics and Metamorphism in Skye”, Bull. Geol. Surv. G.B., 2, 46–62.Google Scholar
Bailey, E. B., 1955. “Moine Tectonics and Metamorphism in Skye”, Trans. Edin. Geol. Soc, 16, 93–166.CrossRefGoogle Scholar
Christie, J. M., 1955. In “Structural Petrology and Problems of the Caledonides”, Advanc. Sri., 12, 571–578.Google Scholar
Clifford, T. N., 1957. “The Stratigraphy and Structure of Part of the Kintail District of Southern Ross-shire: its Relation to the Northern Highlands”, Quart. J. Geol. Soc. Lond., 113, 57–84.Google Scholar
Geikie, A., 1893. Annual Report of Geol. Surv. for 1892.Google Scholar
Johnson, M. R. W., 1956. “Conjugate Fold Systems in the Moine Thrust Zone in the Lochcarron and Coulin Forest Areas of Wester Ross”, Geol. Mag., 93, 345–350.Google Scholar
Johnson, M. R. W., 1957. “The Structural Geology of the Moine Thrust Zone in the Coulin Forest, Wester Ross”, Quart. J. Geol. Soc. Lond., 113, 241–270.Google Scholar
Kennedy, W. Q., 1955. “The Tectonics of the Morar Anticline and the Problem of the North-west Caledonian Front”, Quart. J. Geol. Soc. Lond., 110, 357–382.Google Scholar
Knopf, E. B., and Ingerson, E., 1938. “Structural Petrology”, Mem. Geol. Soc. Amer., 6, 270 pp.Google Scholar
Kursten, M., 1957. “The Metamorphic and Tectonic History of Parts of the Outer Hebrides”, Trans. Edin. Geol. Soc., 17, 1–31.Google Scholar
MacGregor, A. G., 1952. “Metamorphism in the Moine Nappe of Northern Scotland”, Trans. Edin. Geol. Soc., 15, 241–257.CrossRefGoogle Scholar
McIntyre, D. B., 1954. “The Moine Thrust—its Discovery, Age and Tectonic Significance”, Proc. Geol. Ass. Lond., 65, 203–223.CrossRefGoogle Scholar
Peach, B.N. et al., 1907. “The Geological Structure of the North-west Highlands of Scotland”, Mem. Geol. Surv. U.K. Google Scholar
Peach, B.N. et al., 1910. “The Geology of Glenelg, Loch Alsh and the South-eastern part of Skye (Sheet 71)”, Mem. Geol. Surv. U.K. Google Scholar
Peach, B.N. et al., 1913. “The Geology of Central Ross-shire (Sheet 82)”, Mem. Geol. Surv. U.K. Google Scholar
Phillips, F. C., 1937. “A Fabric Study of some Moine Schists and Associated Rocks”, Quart. J. Geol. Soc., 93, 581–616.Google Scholar
Phillips, F. C., 1945. “The Micro-fabric of the Moine Schists”, Geol. Mag., 82, 205–220.CrossRefGoogle Scholar
Phillips, F. C., 1951. “Apparent Coincidences in the Life-history of the Moine Schists”, Geol. Mag., 88, 225–235.CrossRefGoogle Scholar
Ramsay, J. G., 1958. “Moine-Lewisian Relations at Glenelg, Inverness-shire”, Quart. J. Geol. Soc. Lond., 113, 487–520.Google Scholar
Read, H. H., 1934. “Age-problems of the Moines”, Geol. Mag., 71, 302–317.CrossRefGoogle Scholar
Sahama, T. G., 1936. “Die Regelung von Quartz und Glimmer in den Gesteinen der Finnisch Lappländischen Granulitformation”, Bull. Comm. Geol. Finl., 113.Google Scholar
Shainin, U. E., 1950. “Conjugate sets of en echelon Tension Fractures in the Athens Limestone at Riverton, Virginia”, Bull. Geol. Soc. Amer., 61, 509.CrossRefGoogle Scholar
Sutton, J., and Watson, J., 1951. “The Pre-Torridonian Metamorphic History of the Loch Torridon and Scourie Areas in the North-west Highlands, and its bearing on the Chronological Classification of the Lewisian”, Quart. J. Geol. Soc. Lond., 106, 241–308.Google Scholar
Sutton, J., and Watson, J., 1959. “Structures in the Caledonides between Loch Duich and Glenelg, North-west Highlands”, Quart. J. Geol. Soc. Lond., 114, 231–254.CrossRefGoogle Scholar
Wilkinson, P., 1955. In “Structural Petrology and Problems of the Caledonides”, Advanc Sci., 12, 571–578.Google Scholar
Wilson, G., 1952. “A Quartz Vein System in the Moine Series near Melness, A'Mhoine, North Sutherland”, Geol. Mag., 89, 141–144.Google Scholar
Wilson, G., 1953. “Mullion and Rodding Structures in the Moine Series of Scotland”, Proc. Geol. Ass. Lond., 64, 118–151.CrossRefGoogle Scholar