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A differentiated ultrabasic sheet on Sgurr Dearg, Isle of Skye

Published online by Cambridge University Press:  05 July 2018

Fergus G. F. Gibb
Fergus G. F. Gibb*
Affiliation:
Department of Geology, University of Manchester
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Summary

The field relations, mineralogy, and petrography of a small Tertiary ultrabasic sheet are briefly described. Chemical analyses show that compositional variations exist within the intrusion and electron-probe analyses demonstrate that optically undetectable zoning is present in the olivine. Throughout the intrusion, which is composed primarily of forsteritic olivine, calcic plagioclase, and clinopyroxene, there is a differential distribution of olivine. This distribution is attributed to flow differentiation during intrusion followed by gravitative sinking of olivine crystals.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 299 , September 1972 , pp. 811 - 818
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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References

Bhattacharji, (S.), 1965. Geol. Soe. Amer., Spec. Paper 82, 11-12.Google Scholar
Bhattacharji, (S.), 1967. Journ. Geology, 75, 101-12.10.1086/627234CrossRefGoogle Scholar
Drever, (H.I.), 1956. Medd. om Gronland, 137, No. 4.Google Scholar
Drever, (H.I.), and Johnston, (R.), 1957. Trans. Roy. Soc. Edinburgh, 63, 289-315.10.1017/S0080456800009509CrossRefGoogle Scholar
Drever, (H.I.) and Johnston, (R.,) 1958. Trans. Roy. Soe. Edinburgh, 63, 459-99.10.1017/S0080456800003112CrossRefGoogle Scholar
Drever, (H.I.) and Johnston, (R.,) 1966. Journ. Petrology, 7, 414-20.10.1093/petrology/7.3.414CrossRefGoogle Scholar
Drever, (H.I.) and Johnston, (R.,) 1967. In Wyllie, P. J. (ed.) Ultramafie and Related Rocks. Wiley, New York.Google Scholar
Gibb, (F. G. F.), 1968a. Min. Mag. 36, 988-91.Google Scholar
Gibb, (F. G. F.), 1968b. Journ. Petrology, 9, 411-43.CrossRefGoogle Scholar
Hutchison, (R.), 1966. Geol. Mag. 103, 352-63.CrossRefGoogle Scholar
Simkin, (T.), 1967. In Wyllie, P. J. (ed.), Ultramafic and Related Racks. Wiley, New York.Google Scholar