Sagarika Mukhopadhyay, Indian Institute of Technology Roorkee, Department of Earth Sciences, Roorkee, India, Amit Kumar, National Centre for Polar and Ocean Research, GeoScience Division, Vasco Da Gama, Goa, India, Naresh Kumar, Wadia Institute of Himalayan Geology, Geophysics, Dehradun, India and Simon L Klemperer, Stanford Univ, Stanford, CA, United States