Research Interests

I try to understand the physical and chemical processes in the Earth by analyzing the chemistry of its rocks. In particular, I am interested in the application of geochemical (including isotopic) proxies for both high and low-temperature related studies. I am also interested in modeling isotopic evolution (Rb-Sr, Sm-Nd, U-Th-Pb-He, and K-Ar systems) of the Earth, and specifically, how the various isotopic systems have evolved through time in various terrestrial reservoirs. Approach is to solve numerical models of mass and species transport, and find the most plausible solution that mimics the present-day Earth.
My current research also includes reconstruction of Quaternary paleoclimate (and paleovegetation patterns) of India, with respect to the major shifts in southwest monsoon strength and precipitation, from multiple climate proxies archived in sediment records of Indus-Gangetic basin and other alluvium, and archaeological (short-lived herbivores) material. In particular, proxies such as stable oxygen and carbon isotopic composition of carbonate nodules, paleosols, sediment/soil organic matter, and clay minerals recovered from well-dated horizons are utilized to reconstruct climate history during the Quaternary.