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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/6309
Title: Source characterization and possible emplacement mechanism of collision-related Gangotri Leucogranite along Bhagirathi Valley, NW-Himalaya
Authors: Singh, Sandeep
Mukherjee P.K.
Jain A.K.
Khanna P.P.
Saini N.K.
Kumar R.
Published in: Journal of the Virtual Explorer
Abstract: The Gangotri leucogranite is one of the largest bodies in the Higher Himalayan Leucogranite (HHL) belt. They occur as en-echelon lenses within the Pan-African S-type granitoid body. The possible source of proximal high-grade metasedimentary rocks and migmatites has yet to be established due to contrasting geochemistry. However, the observed geochemical linearity in binary variation diagrams and the sub-parallel nature of REE and spider-diagram patterns and other trace element data for the Pan-African body and tourmaline-bearing leucogranite suggest that the Pan-African body is the best potential source candidate. The separation of a small fraction of felsic melt from the source due to high viscosity is attributed to compactional or shearing stress during the syn-collisional event of Himalayan orogeny. The geochemical signatures also suggest that the leucogranites were produced by a lower degree of partial melting probably at shallower depth and low temperature.
Citation: Journal of the Virtual Explorer (2003), 11(): -
URI: http://repository.iitr.ac.in/handle/123456789/6309
Issue Date: 2003
Keywords: Collisional magmatism
Geochemistry
Geochronology
Higher Himalayan Leucogranite belt
Himalayan granites
ISSN: 14418126
Author Scopus IDs: 7406400956
57209048548
57211729470
7103233684
7102341150
55553737050
Author Affiliations: Singh, S., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee-247 667, India
Mukherjee, P.K., Wadia Institute of Himalayan Geology, 33 Gen. Mahadeo Singh Road, Ballupur, Dehradun-248 001, India
Jain, A.K., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee-247 667, India
Khanna, P.P., Wadia Institute of Himalayan Geology, 33 Gen. Mahadeo Singh Road, Ballupur, Dehradun-248 001, India
Saini, N.K., Wadia Institute of Himalayan Geology, 33 Gen. Mahadeo Singh Road, Ballupur, Dehradun-248 001, India
Kumar, R., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee-247 667, India
Corresponding Author: Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee-247 667, India
Appears in Collections:Journal Publications [ES]

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