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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/6306
Title: Biotite Rb-Sr ages: Constraints on exhumation of the Karakoram Metamorphic Complex, Eastern Ladakh
Authors: Singh, Sandeep
Patra B.A.
Vijan A.R.
Jain A.K.
Published in: Journal of the Geological Society of India
Abstract: Biotite and K-feldspar Rb-Sr ages from three granitoid intrusives within the Karakoram Metamorphic Belt (KMB), eastern Ladakh yield indistinguishable ages between 12-10 Ma. Since the closure temperature of biotite for Sr diffusion is 300±50° C, we interpret these ages due to exhumation at 10 to 7 kin depth within the crust. This implies that the Pangong Metamorphic Belt of the KMB, located at the southern termination of the Eurasian Plate, was undergoing a fast exhumation in a transpressional regime during Middle Miocene. These data also indicates that the southern edge of the Eurasian Plate has exhumed rapidly in comparison to the Higher Himalayan Crystallines within the Indian Plate segment.
Citation: Journal of the Geological Society of India (2006), 67(1): 27-31
URI: http://repository.iitr.ac.in/handle/123456789/6306
Issue Date: 2006
Keywords: Eastern Ladakh
Granitoids
Karakoram complex
Rb-Sr ages
ISSN: 167622
Author Scopus IDs: 7406400956
12791766300
6506631668
57211729470
Author Affiliations: Singh, S., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, India
Patra, B.A., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, India
Vijan, A.R., Geochronology Division, KDMIPE, ONGC, Kaulagarh Road, Dehradun - 248 001, India
Jain, A.K., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, India
Corresponding Author: Singh, S.; Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee - 247 667, India; email: sandpfes@iitr.ernet.in
Appears in Collections:Journal Publications [ES]

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