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

R. Elsdon ¹, L. N. Gupta ²

Affiliations
1 Department of Geology, University College, Belfield, Dublin 4, IE
2 Centre of Advanced Study in Geology, Panjab University, Chandigarh 160014, IN

Abstract

Petrochemical studies on fourteen representative samples of the Lansdowne Granite Gneiss indicate close compositional uniformity. Most of the analyses fall within the field of granodiorite, and lie close to the low-pressure ternary minimum in the system Qz-Or-Ab-H₂O. Inter-element relationships indicate an initial magmatic origin, with pronounced gneissosity due to later deformation.

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