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

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Superimposition of Early Palaeozoic Contact Metamorphism by Tertiary Regional Metamorphism Around Dalash, District Kulu, Himachal Pradesh (India)


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1 Wadia Institute of Himalayan Geology, Dehra Dun, India
     

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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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  • Superimposition of Early Palaeozoic Contact Metamorphism by Tertiary Regional Metamorphism Around Dalash, District Kulu, Himachal Pradesh (India)

Abstract Views: 191  |  PDF Views: 5

Authors

N. S. Guru Rajan
Wadia Institute of Himalayan Geology, Dehra Dun, India
N. S. Virdi
Wadia Institute of Himalayan Geology, Dehra Dun, India

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.