Skip to main content Accessibility help

A differentiated ultrabasic sheet on Sgurr Dearg, Isle of Skye

  • Fergus G. F. Gibb (a1)


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.



Hide All
Bhattacharji, (S.), 1965. Geol. Soe. Amer., Spec. Paper 82, 11-12.
Bhattacharji, (S.), 1967. Journ. Geology, 75, 101-12.
Drever, (H.I.), 1956. Medd. om Gronland, 137, No. 4.
Drever, (H.I.), and Johnston, (R.), 1957. Trans. Roy. Soc. Edinburgh, 63, 289-315.
Drever, (H.I.) and Johnston, (R.,) 1958. Trans. Roy. Soe. Edinburgh, 63, 459-99.
Drever, (H.I.) and Johnston, (R.,) 1966. Journ. Petrology, 7, 414-20.
Drever, (H.I.) and Johnston, (R.,) 1967. In Wyllie, P. J. (ed.) Ultramafie and Related Rocks. Wiley, New York.
Gibb, (F. G. F.), 1968a. Min. Mag. 36, 988-91.
Gibb, (F. G. F.), 1968b. Journ. Petrology, 9, 411-43.
Hutchison, (R.), 1966. Geol. Mag. 103, 352-63.
Simkin, (T.), 1967. In Wyllie, P. J. (ed.), Ultramafic and Related Racks. Wiley, New York.

A differentiated ultrabasic sheet on Sgurr Dearg, Isle of Skye

  • Fergus G. F. Gibb (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed