Sohom Roy

PhD Student

sohomroy.jugeo@gmail.com | +918250063865 | +919474584788

sohom

Academics

PhD

Indian Institute of Science Education and Research Kolkata.

M.Sc

Applied Geology, Jadavpur University, 2014.

B.Sc

B.Sc, Honours in Geological Sciences, Jadavpur University, 2012.

Research Tools and Interests

Stable isotope geochemistry (C, H, O); atmospheric CO2 reconstruction; petroleum geochemistry; lipid biomarkers in ancient rock records (n-alkane, n-fatty acid, terpanes, steranes, PAHs, GDGT, etc.); compound-specific isotope analysis (CSIA); mass extinction and other boundary events; soil organic matter dynamics; paleo-climate and paleo-vegetation reconstruction

Instruments and Softwares:

Projects

Title of PhD Thesis: Tracing influences of the Deccan Traps volcanism on the paleo-environmental conditions from within the Indian subcontinent to understand its impact on the Cretaceous-Paleogene mass extinction event: A stable isotope and biomarker perspective

Supervisor: Prof. Prasanta Sanyal
Fellowship: Centre for Scientific and Industrial Research (CSIR)
Organization/Institute: Indian Institute of Science Education and Research Kolkata (IISER K)

Title of MSc. Thesis: Chlorite Geochemistry and fluid inclusion study of Bangurdih uranium occurrence, Singhbhum Shear Zone, eastern India (2013-14)
Supervisor: Dr. Dipak C Pal
Field area: Singbhum Shear Zone, in Rangamatia-Bangurdih area, Bihar
Objective: To see whether chlorite can be used as a geochemical tracer for uranium mineralization and to find out the nature of the hydrothermal fluid emplaced at the laststage of shearing

Summer Project: Geochemical modelling of magmatic processes (2013)
Supervisor: Prof. Santosh Kumar (Kumaon University, Nainital, Uttarakhand)
Observations: To conceptualize the mass balance calculation in semi quantitative of liquid crystal fractionation by the use of the software GPP Program, utilizing majorelement oxides

Publications

Vijayananda Sarangi*,Sohom Roy*, Prasanta Sanyal. 2022: Effect of burning on the distribution pattern and isotopic composition of plant biomolecules: Implications for paleoecological studies Geochimica et Cosmochimica Acta,Vol 318, Pages 305-327.

Sohom Roy*, Prasanta Sanyal, Parthasarathi Ghosh, S.K. Bhattacharya, A. Ajay*. 2021: Atmospheric CO2 estimates based on Gondwanan (Indian) pedogenic carbonates reveal positive linkage with Mesozoic temperature variations Palaeogeography, Palaeoclimatalogy, Palaeoecology,582, 110638.

Sohom Roy*, Sambit Ghosh*, Prasanta Sanyal. 2021: Carbon reservoir perturbations induced by Deccan volcanism: Stable isotope and biomolecular perspectives from shallow marine environment in Eastern India Geobiology.

Biswajit Roy*, Sohom Roy*,Kanva Goyal**, Sambit Ghosh*, Prasanta Sanyal.2021:Biomarker and carbon isotopic evidence of marine incursions in the Himalayan Foreland Basin during its overfilled stage Paleoceanography and Paleoclimatology 36, e2020PA004083.

Sambit Ghosh*, Prasanta Sanyal, Sohom Roy*, Ravi Bhushan, S.P. Sati, Anne Philippe, Navin Juyal, 2020: Early Holocene Indian summer monsoon and its impact on vegetation in the Central Himalaya: insight from δD and δ13C values of leaf wax lipid, The Holocene,30,7:1063-1074

Published Abstracts (First author)

Impact of the Deccan Volcanism on the Surrounding Environments: What We Can Know from Sedimentary Trappean Sections American Geophysical Union (AGU), 2021


Understanding Effects of OAE 2 in the Marginal-marine Environment: A Multi-proxy approach from Bagh Beds, Western India—American Geophysical Union (AGU), 2020


Anoxic bottom water condition during the Deccan volcanism: Multi-proxy evidences from a shallow marine sequence in Rajahmundry, SE India—European Geological Union (EGU), 2020


Carbon reservoir perturbations in the Indian subcontinent induced by the Deccan volcanism in the terrestrial and marine realms—Japan Geoscience Union (JpGU), Chiba, Japan, 2019


Paleo-environmental Conditions and Fate of Organic Matter in the K/Pg Boundary: Case Study from Rajahmundry, Southern India—Annual General Meeting (AGM) of Geological Society of India, Sagar University, 2017


Fate of Organic Matter and Eustatic Sea Level Fluctuations in the K-T Boundary: Case Study from Rajahmundry, Southern India—Advances in Modern Earth System Sciences (AMESS), IISER KOLKATA, 2017

Invited Talk

2022 (February)
4th International Webinar on Geology and Earth Science : "A biogeochemical
and stable isotope perspective on the effects of the Deccan volcanism on the
surrounding regions"

Teaching Responsibilities (courses as TA)

Earth System Processes (ES1201): Department of Earth Sciences, IISER
Kolkata—with Dr. Manoj Jaiswal and Dr. Sayantan Sarkar (2017—2018
Spring)
Biogeochemical cycles and surface processes (ES2101): Department of Earth
Sciences, IISER Kolkata—with Dr. Sujata Ray and Dr. Sayantan Sarkar (2017—2018 Autumn)

List of Awards/ Grants/ Fellowships

Received the AGU Fall Meeting 2021 Travel Grant (2021)
Received the 36th IGC Student Travel Grant (2020)
Received the JpGU Student Travel Grant (2019)
Received best presentation award for poster in AMESS international conference (2017)
Secured SRF fellowship from CSIR (2017)
Secured All India Rank 229 in Graduate Aptitude Test in Engineering (2014)
Secured JRF fellowship in National Eligibility Test (NET) (All India Rank 22) (2013)
Secured All India Rank 76 in Joint Admissions for Masters (2012)
Secured 1st Class with distinction in M.Sc., and B.Sc. with Subsidiary (Math &
Physics) (2009)
Received Vidyasagar Scholarship from the Department of Higher Education,
Ministry of Human Resource Development, Govt. of India for Higher Secondary (2005)
Secured a national rank of 21 and scholarship in the 5th National Cyber Olympiad (2005)