Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

N. S. Guru Rajan ¹, N. S. Virdi ¹

Affiliations
1 Wadia Institute of Himalayan Geology, Dehra Dun, IN

Abstract

The Chail Formation in Dalash area, Himachal Pradesh is intruded by a number of small granitic bodies which represent off-shoots of the Mandi-Karsog granite pluton of early Palaeozoic age. At the contact of these intrusions, hornfelses are observed characterized by mineral assemblages biotite-andalusite-sillimanite-K-feldspar, exhibiting hornblende-hornfels facies conditions of contact metamorphism. The hornfelses along with the other country rocks have undergone regional metamorphism under greenschist to epidote-amphibolite facies conditions during the Tertiary Himalayan Orogeny.

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