Geological Society of America

T181 Cratonic Assembly in the Precambrian: Forming the Core of Modern and Ancient Landmasses (Posters)

Monday, 23 October 2017
9:00 AM - 6:30 PM
Halls 4EF

DATING THE MAGMATO-METAMORPHIC EVENTS IN THE CHOTTANAGPUR GNEISS COMPLEX, EASTERN INDIA

Paper number: T181-6
Program: Technical Sessions
Time: 9:00 AM – 6:30 PM

Authors

Kelsey Deporter Presenting Author
University of Colorado Boulder, Boulder, CO
Nicole Sequeira
Indian Institute of Technology (IIT) Kharagpur, Kharagpur
Thomas M. Marchitto
Univ of Colorado, Boulder, CO
Atreyee Bhattacharya
University of Colorado Boulder, Boulder, CO
Abhijit Bhattacharya
Indian Institute of Technology (IIT) Kharagpur, Kharagpur

Abstract

The Chottanagpur Gneiss Complex (CGC) in Eastern India is an accretionary orogen sandwiched between the Meso/Paleoarchean Singhbhum Craton in the south and the Paleoproterozoic Munghyr Belt in the north. Reconstruction of the Meso/Neoproterozoic accretion dynamics of the crustal domain is poorly constrained due to the lack of robust age data in the high-grade basement gneisses, deformed granitoids and the linear belts of amphibolite facies supracrustal rocks comprising the dominant lithodemic units in the CGC. In this study, we constrain the deformation-metamorphic history and ages of the units based on whole rock lithogechemistry and Laser ablation U-Pb dating of zircons in Simultala (north CGC) and Daltongunj (mid-central CGC) respectively.

Geological Society of America Abstracts with Programs. Vol. 49, No. 6

doi: 10.1130/abs/2017AM-305672

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