Assistant Professor
Department of Earth and Environmental Sciences
📍 1F8 AB-1
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Research Area
Organic Geochemistry
Research Interests
I am a geologist specializing in Organic Geochemistry. The primary focus of my research is to decipher ancient biotic forms, paleo-ecosystems and petroleum systems. In particular, I am interested in organic molecular fossils (biomarkers) preserved in sediments for unravelling geochemical information on ancient microbes, flora and fauna across the geological time scale and assessment of energy resources.
Sharmila Bhattacharya, Harsh Kishor, Yadav Ankit, Praveen K Mishra and Pradeep Srivastava. Vegetation history in a peat succession over the past 8,000 years in the ISM-controlled Kedarnath Region, Garhwal Himalaya: reconstruction using molecular fossils. Frontiers in Earth Science 9:703362, 2021. Sharmila Bhattacharya, Yadav Ankit, Srikanta Murthy and Vasudev Kushwaha. Biotic response to environmental shift during the Permian-Triassic transition: Assessment from organic geochemical proxies and palynomorphs in terrestrial sediments from Raniganj Sub- basin, India. Palaeogeography, Palaeoclimatology, Palaeoecology 576:110483, 2021. Sharmila Bhattacharya, Suryendu Dutta and Sumit Kumar. Identification of lanostanes, A-ring methylated steranes and secosteranes in late Neoproterozoic crude oils by GC$\times$ GC-TOFMS: New insights into molecular taphonomy of steroids. Geobios 68:47–59, 2021. Sharmila Bhattacharya, Mahasin Ali Khan, Sandip More, Dipak Kumar Paruya, Tapan Chakraborty, Subir Bera and Suryendu Dutta. Amber embalms essential oils: a rare preservation of monoterpenoids in fossil resins from Eastern Himalaya. Palaios 33(5):218–227, 2018. Sharmila Bhattacharya, Suryendu Dutta and Roger E Summons. A distinctive biomarker assemblage in an Infracambrian oil and source rock from western India: Molecular signatures of eukaryotic sterols and prokaryotic carotenoids. Precambrian Research 290:101–112, 2017. Sharmila Bhattacharya and Suryendu Dutta. Neoproterozoic-Early Cambrian biota and ancient niche: A synthesis from molecular markers and palynomorphs from Bikaner-Nagaur Basin, western India. Precambrian Research 266:361–374, 2015. Suryendu Dutta, Sharmila Bhattacharya and Srinivasan V Raju. Biomarker signatures from Neoproterozoic–early Cambrian oil, western India. Organic geochemistry 56:68–80, 2013.