Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-23T08:01:26.471Z Has data issue: false hasContentIssue false
  • English
  • Français

V.—Further Observations on the Margin of the Laxfordian Complex of the Lewisian near Loch Laxford, Sutherland

Published online by Cambridge University Press:  06 July 2012

J. Sutton  and
Janet Watson
Get access Rights & Permissions [Opens in a new window]

Synopsis

The paper is concerned with one of the marginal parts of the Laxfordian complex of the Lewisian of north-western Scotland where the older Scourian complex (c. 2500 million years) was reactivated during the Laxfordian orogeny (c. 1600 million years). The effects of Laxfordian deformation are discussed with reference to the distortion of Scourian structures and post-Scourian dolerite dykes and to the orientation of newly-developed structures. The arrangement of structures N.E. of the Laxfordian metamorphic front is thought to result from rotation of pre-existing planar elements during compression on north-east-south-west lines, without the development of very large folds. The connection between the style and arrangement of Laxfordian structures and the metamorphic state of the rocks at the time of deformation is illustrated with reference to both local and regional variations, and some implications of the regional changes in the structural pattern are discussed.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 65 , Issue 5 , 1962 , pp. 89 - 106
Copyright
Copyright © Royal Society of Edinburgh 1962

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References to Literature

Bailey, E. B., 1935. “The Glencoul Nappe and the Assynt Culmination”, Geol. Mag., 72, 151–165.CrossRefGoogle Scholar
Bowes, D. R., 1962. In “Symposium on Depth and Tectonics as Factors in Regional Metamorphism”, Proc. Geol. Soc. Lond., 1594, 28–30.Google Scholar
Dearnley, R., 1962. “An Outline of the Lewisian Complex of the Outer Hebrides in Relation to that of the Scottish Mainland”, Quart. J. Geol. Soc. Lond., 118, 143–66.CrossRefGoogle Scholar
Giletti, B. J., 1959. “Rubidium-strontium Ages of Lewisian Rocks from Scotland”, Nature, Lond., 184, 1793–1794.CrossRefGoogle Scholar
Giletti, B. J., Moorbath, S., and Lambert, R. St. J., 1961. “A Geochronological Study of the Metamorphic Complexes of the Scottish Highlands”, Quart. J. Geol. Soc. Lond., 117, 233–272.CrossRefGoogle Scholar
Haller, J., 1953. “Geologie und Petrographie von West-Andrees Land und Öst-Frankel Land (NE-Grönland)”, Medd. Grønland, 113, Nr 5.Google Scholar
King, B. C., 1955. “The Tectonic Pattern of the Lewisian around Clashnessie Bay, near Stoer, Sutherland”, Geol. Mag., 92, 69–80.CrossRefGoogle Scholar
O'hara, M. J., 1961 a. “Zoned Ultrabasic and Basic Gneiss Masses in the Early Lewisian Metamorphic Complex at Scourie, Sutherland”, J. Petrol., 2, 248–276.CrossRefGoogle Scholar
O'hara, M. J., 1961 b. Petrology of the Scourie Dyke, Sutherlandshire”, Miner. Mag., 32, 848–865.Google Scholar
Peach, B. N. et al. , 1907. “The Geological Structure of the North-West Highlands of Scotland”, Mem. Geol. Surv. U.K.Google Scholar
Phemister, T. C., 1960. “The Nature of the Contact between the Grenville and Temiskaming Sub-provinces in the Sudbury District of Ontario, Canada”, 21st Int. Geol. Congr., Report, Copenhagen, Section 14, 108–119.Google Scholar
Phillips, F. C., 1949. “Lineation in Moinian and Lewisian Rocks of the Northern Highlands of Scotland”, Geol. Mag., 86, 279–287.CrossRefGoogle Scholar
Ramsay, J. G., 1958. “Superimposed Folding at Loch Monar, Inverness-shire and Ross-shire”, Quart. J. Geol. Soc. Lond., 113, 271–308.CrossRefGoogle Scholar
Ramsay, J. G., 1960. “The Deformation of Early Linear Structures in Areas of Repeated Folding”, J. Geol., 68, 75–93.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, 241–296.CrossRefGoogle Scholar
Teall, J. J. H., 1885. “The Metamorphosis of Dolerite into Hornblende-schist”, Quart. J. Geol. Soc. Lond., 41, 133–145.CrossRefGoogle Scholar
Wegmann, C. E., and Kranck, E. H., 1931. “Beiträge zur Kenntnis der Svecofenniden in Finnland”, Bull. Comm. Géol. Finl., 89.Google Scholar
Weiss, L. E., 1959. “Geometry of Superimposed Folding”, Bull. Geol Soc. Amer., 70, 91–106.CrossRefGoogle Scholar