The Geology of the Corundum-Bearing and Related Rocks Around Timurgara, Dir
Abstract
The geology of the Timurgara, Dir, area has been mapped, largely because of the occurrence of ruby corundum associated with some ultramafic bodies intruding the regionalhornblende gneisses, quartzo-feldspathic gneisses, and minor phyllites.
The most abundant intrusive rocks are dioritic, themselves intruded by granites. The ultramafic bodies include serpentinites, pyroxenites and the corundum-bearing amphibolites. The relationship of these to the other intrusive rocks
is not clear.
References
Davies, R.O., 1965. The nature of the Upper Swat Hornblendic Group of Martin et al. (1962). Geo!. Bull. Panjab Univ., vol. 5, pp. 51-2.
Jan, M.Q., and Tahirkheli, R.A.K., Ibid. The geology of the lower part of Indus Kohistan (Swat), West Pakistan. Pp. 1-13.
Jan, M.Q., Kempe, D.R.C., and Tahirkheli, R.A.K.,1971. in press-Corundum, altering to margarite, in amphibolites from Dir, West Pakistan. Min. Mag., vol. 39.
Krishnan, M.S., 1956. Geology of India. (Madras, Higginbothams).
Martin, N.R., Siddiqui, S.F.A., and King, B.H., 1962. A geological reconnaissance
of the region between the Lower Swat and the Indus Rivers of Pakistan. Geol. Bull. Panjab Univ., vol. 2, pp. 1-13.
