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GSA Annual Meeting in Seattle, Washington, USA - 2017

Paper No. 181-6
Presentation Time: 9:00 AM-6:30 PM

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


DEPORTER, Kelsey1, SEQUEIRA, Nicole2, MARCHITTO, Thomas M.3, BHATTACHARYA, Atreyee1 and BHATTACHARYA, Abhijit2, (1)Environmental Studies, University of Colorado Boulder, Boulder, CO 80303, (2)Geology and Geophysics, Indian Institute of Technology (IIT) Kharagpur, Kharagpur, 721302, India, (3)Geological Sciences, Univ of Colorado, INSTAAR, Box 450, Boulder, CO 80309, kelsey.deporter@colorado.edu

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.

Session No. 181--Booth# 406

T252. 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 (Washington State Convention Center)
Geological Society of America Abstracts with Programs. Vol. 49, No. 6
doi: 10.1130/abs/2017AM-305672
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