Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-27T10:33:27.707Z Has data issue: false hasContentIssue false
  • English
  • Français

The Suisnish layered dyke

Published online by Cambridge University Press:  05 July 2018

G. R. Parslow
G. R. Parslow*
Affiliation:
Dept. of Geological Sciences, University of Regina, Regina, Canada, S4S OA2
Get access Rights & Permissions [Opens in a new window]

Summary

A minor picritic body at Suisnish Point, Isle of Skye, is described. The mass has a dyke-like form, and is rhythmically layered. Cryptic layering, however, is absent. From a study of the field relations, contacts, metamorphic aureole, and other physical features, it is concluded that the mass crystallized in situ (i.e. it is a true dyke) and is not an upfaulted block of pre-existing igneous rock. The main physical and chemical features of the layered units and their mineralogy are described. The problems of generating horizontal rhythmic layers in a relatively small, essentially vertical, planar intrusion are discussed. It is concluded that the surrounding country rock was maintained at a moderate temperature during, and after, intrusion of the picritic magma and that this allowed a combination of gravity settling and magma flow currents to produce a cumulate rock with characters normally only observed in much larger intrusions.

Type
Research Article
Information
Mineralogical Magazine , Volume 40 , Issue 315 , September 1976 , pp. 683 - 693
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1976

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

Almond, (D. C.), 1964. Trans. Roy. Soc. Edinb. 65, 413-34 [M.A. 17-334].Google Scholar
Arkell, (W. J.), 1933. The Jurassic System in Great Britain. Oxford (Oxford Univ. Press).Google Scholar
Bhattacharji, (S.), 1967a. Journ. Geol. 75, 101-12 [M.A. 19-152].CrossRefGoogle Scholar
Bhattacharji, (S.), 1967b. In Ultrarnafic and Related Rocks. New York (John Wiley) [M.A. 19-227].Google Scholar
Bott, (M. H. P.) and Tuson (J)., 1972. Nature, 242, 114-16 [M.A. 74-1563].Google Scholar
Carmichael, (I. S. E.), Turner, (F. J.), and Verhoogen, (J.), 1974. Igneous Petrology. New York (McGraw-Hill).Google Scholar
Drever, (H. I.), and Johnston, (R.), 1957. Trans. Roy. Soc. Edinb. 63, 289-315.CrossRefGoogle Scholar
Drever, (H. I.), and Johnston, (R.), 1967. In Ultramafic and Related Rocks. New York (John Wiley) [M.A. 19-227].Google Scholar
Gibb, (F. G. F.), 1969. Min. Mag. 37, 504-14 [M.A. 70-784].CrossRefGoogle Scholar
Gibb, (F. G. F.), 1972. Ibid. 38, 811-8 [M.A. 72-3369].CrossRefGoogle Scholar
Hawkes, (D. D.), 1966. Geol. Soc. Arner. Bull. 77, 1131-58.CrossRefGoogle Scholar
Jaeger, (J. C.), 1967. In Basalts, 2. New York (interscience/Wiley) [M.A. 69-630].Google Scholar
Simkin, (T.), 1964. Geol. Soc. Amer. Spec. Paper, 82.Google Scholar
Tan, (F. C.), 1969. Penn. State Univ. Ph.D. Thesis (unpubl.).Google Scholar
Tan, (F. C.), and Hudson, (J. D.), 1971. Geochimica Acta, 35, 755-67 [M.A. 72-1225].CrossRefGoogle Scholar
Tan, (F. C.), 1974. Scot. Journ. Geol. 10, 91-128.CrossRefGoogle Scholar
Thompson, (R. N.), Esson, (J.), and Dunham, (A. C.), 1972. Journ. Petrol. 13, 219-53 [M.A. 73-857].CrossRefGoogle Scholar
Turner, (F. J.), 1968. Metamorphic Petrology. New York (McGraw-Hill).Google Scholar
Tuttle, (O. F.) and Bowen, (N. L.), 1958. Geol. Soc. Amer. Mere. 74.Google Scholar
Wager, (L. R.) and Brown, (G. M.), 1968. Layered Igneous Rocks. Edinburgh (Oliver & Boyd) [M.A. 19-173].Google Scholar
Weedon, (O. S.), 1965. Scot. Journ. Geol. 1, 42-68 [M.A. 17-315].CrossRefGoogle Scholar
Wyllie, (P. J.), 1959. Amer. Min. 44, 1039-46.Google Scholar
Wyllie, (P. J.), 1961. Journ. Petrol. 2, 1-37.CrossRefGoogle Scholar
Wyllie, (P. J.), 1967. Ultramafic and Related Rocks. New York (John Wiley) [M.A. 19-227].Google Scholar