National Centre for Earth Science Studies

Education:

Professional Career:

Area of specialization:

Global Seismology (Geophysics)

Areas of Interests:

(i) Seismic Structure of the lowermost mantle (D’’ layer) and mid-to-upper mantle

(ii) Imaging of Seismic Anisotropy (Upper and Lowermost Mantle Dynamics and Deformation)

(iii) Structure, Deformation and Evolution of the crust and lithosphere

(iv) Ambient Noise and Surface Wave Tomography

(v) Development of codes/programs to decipher the sub-surface structure and anisotropy

Honours/Awards/Fellowships :

1. Best Paper Award (Earth & Planetary Sciences) 31st Kerala Science Congress 2019, Kollam, India MoES (Ministry of Earth Science) travel grant for AGU Fall Meeting 2018, Washington, D.C., USA
2. MoES (Ministry of Earth Science) travel grant for IAG-IASPEI Conference 2017, Kobe, Japan.
3. Figure published on the cover page of the prestigious journal of the American Geophysical Union “Geochemistry, Geophysics, Geosystems”. (Rao et al., 2017, Vol. 18, No. 2, 2017).
4. Inspire Fellow (DST-SRF), India (2015-2016).
5. Inspire Fellow (DST-JRF), India (2013-2015).
6. Project Research Fellowship, CSIR – NGRI, India (2012).
7. UPSC’s Combined Geo-Scientist and Geologist Examination qualified, 2014.
8. GATE (Graduate Aptitude Test in Engineering) qualified, 2012, 2013 and 2015.
9. University Topper, M.Sc. (2011).
10. Prof. Jagdeo Singh Memorial Grant, IGU, India (2010).
11. First Rank and Merit Scholarship, B.Sc. (2006-2009).

Membership in Professional Bodies:

Member, American Geophysical Union (AGU)

Member, European Geosciences Union (EGU)

Member, Ocean Society of India (OSI

Member, Indian Geophysical Union (IGU)

Member, Association of Exploration Geophysicists (AEG)

Member, Society of Exploration Geophysicists (SEG) (2009-2011)

Member, Society of Petroleum Geophysicists (SPG) (2009-2011)

Expeditions/Field Work Experience:

1. Actively participated in the 39th Indian Scientific Expedition to Antarctica (ISEA) as a part of project entitled “Constraining Geodynamic evolution of Princes Elezabeth Land (PEL), East Antarctica and Eastern Ghats Belt (EGB), India using geological and geophysical approaches”.
2. Actively participated in the IOGL cruise for deployment and recovery of Ocean Bottom Seismometers in the region of Indian Ocean Geoid Low.
3. Installation, maintenance and data-collection of broadband seismological stations along the Western Ghats.
4. Installation, maintenance and data-collection of broadband seismological stations at Arunachal Pardesh and adjoining areas (May 2015 - June 2015).
5. Installation, maintenance and data-collection of broadband seismological stations at Tamilnadu, Karnataka and Kerala regions (One week in March 2014).
6. Geological field work, Veldurti To Ramallakota Region, Kurnool, Andhra Pradesh (2010).

Training/Conferences:

1. India International Science Festival (22-12-2020 to 25-12-2020)
2. Pre-Antarctic Snow-Ice acclimatization training at ITBP Auli in connection to the 39th Indian Scientific Expedition to Antarctica (10-09-2019 to 03-10-2019).
3. International Conference on Antarctic Research (ICAR) - 2020, Antarctica (17-01-2020).
4. Debriefing meeting on OBS recovery and redeployment in the IOGL region, NCPOR, MoES, India (03-09-2019 to 04-09-2019)
5. National workshop for evaluation of research projects for planning the 39th Indian Scientific Expedition to Antarctica, NCPOR, MoES, India (13-05-2019 to 17-05-2019)
6. 104th Indian Science Congress 2017, S.V. University, Tirupati (03-01-2017 to 07-01-2017).
7. Matlab training programme, NCESS, Thiruvananthapuram (26-09-2016 to 30-09-2016).
8. Geodynamics Training Programme, IISc, Bangalore (19-09-2016 to 23-09-2016).
9. Training on Seismic Data Processing, SPIC, ONGC, Mumbai (2010).

Projects:

1. Insights into Indian Ocean Geoid Low: Geodynamic exploration (MoES-Ministry of Earth Sciences, Govt. of India).
2. Crustal and mantle structures and geodynamic model of Western Ghats (MoES-Ministry of Earth Sciences, Govt. of India).
3. Deep lithospheric structure across shear zones, South India (MoES-Ministry of Earth Sciences, Govt. of India).
4. Constraining Geodynamic evolution of Princes Elezabeth Land (PEL), East Antarctica and Eastern Ghats Belt (EGB), India using geological and geophysical approaches.
5. Indian Ocean Geoid Low: Search for seismic signatures in the lower mantle (MoES-Ministry of Earth Sciences, Govt. of India, 2011 - 2014).

Education:

Professional career:

Areas of Interests:

My own research to date has been on Archaean TTGs and high-K granitoids (including sanukitoids) and the Proterozoic reworking of these. My current focus is on understanding the when, where and how the continental crust was formed and has evolved to its present day volume, composition and architecture. Currently I am working on whole rock geochemistry and isotopes (Sr-Nd systematics) and also investigating the use accessory minerals in understanding crustal evolutionary processes using U-Pb/Hf isotopic systematics and trace elements.

Honours/Awards/Fellowships :

1. GeoHost Funds to attend International Geological Congress (IGC) 2020 (postponed due to Covid19), New Delhi, India.
2. Postdoctoral Fellowship at Physical Research Laboratory, Ahmedabad, India (2014-2016).
3. Young Scientist fellowship, Russian Foundation of Basic Research (RFBR), Russia (2015).
4. Geochemical Society Travel Grant for attending Goldschmidt (2014, 2016).
5. Partial support from K.H. Renlund foundation for field work in Archean region of Northern Lapland, Finland (2014).
6. Secretary of “The Changing Early Earth IGCP-SIDA 599” project for India and Asia (2012-2014).
7. University Grants Commission - Senior Research Fellow (NET-SRF) at Dept. of Geology, University of Delhi (2013-2014).
8. Travel support from Vice chancellors fund (Delhi university) and IGCP-599 for U-Pb SIMS analytical work in Sweden (2013).
9. Full support from IGCP-599 to attend IGC-2012, Brisbane, Australia (5days).
10. Full support from IGCP-599 and Åbo Akademi University to attend Field workshop on "Pluton emplacement - in theory and praxis" in Sweden and Finland (2012).
11. Partial Travel Support from Organizers of BRICKS Workshop, Johannesburg (2012).
12. Full financial support from IGCP-SIDA 599 for attending IGCP workshop in Mekrijärvi, Finland (2011).
13. University Grants Commission - Junior Research Fellow (NET-JRF) at Dept. of Geology, University of Delhi (2011-2013).
14. 2nd Rank (Certificate) in M. Sc Geology, Delhi University and Hansraj college (2006).

Field Experience:

1. Field work in Princes Elizabeth Land, Antarctica as part of 39th Indian Scientific Expedition to Antarctica (Nov 2019 to Feb 2020).
2. Pre-conference (Goldschmidt) field work in south Armorican shear zone, August 2017.
3. Fieldwork in Central Karelia, Vodlozero terrane, Russia, June 2015 (1 week).
4. Fieldwork in Inari terrain, Northern Lapland, Finland, July 2014 (15 days).
5. International Geological Workshop on “Craton Formation and Destruction” in Johannesburg, South Africa, July 2013 (1 week).
6. Field course on Pluton emplacement from at Finland and Sweden, August 2012 (2 weeks).
7. Field Workshop in Srinagar and Ladakh Himalayas, June 2012 (10 days).
8. IGCP-SIDA 599 Project Field Workshop at Mekrijärvi, Finland, Sep 2011 (1 week).
9. Department of Science and Technology sponsored Field workshop at Haldwani, Nainital, Feburary 2010 (1 week).

Invited Talks:

1. "Crustal Evolution of Peninsular India: Constraints using Detrital Geochronology" at National Institute of Oceanography (NIO), Goa on 4th October 2018.
2. “Petrological, Geochemical and U-Pb Zircon Geochronological Studies of the Bundelkhand Granitoids, Central India: Constraints on Archean Crustal Evolution” at Institute of Geology, Karelian Research Centre, Petrozavodsk, Russia on 21st May 2015.
3. “Broad overview of Bundelkhand Craton” at IGCP-SIDA 599 Project meeting in Brisbane Australia on 5th of Aug 2012
4. “Bundelkhand Craton and Overview” Evolving Continents-Research Community, University of Helsinki, Finland on 31st Jan 2013.
5. “Characterization of the Archean-Proterozoic Bundelkhand Granitoids, Northern Indian Shield” at IGCP-SIDA 599 Project Launch Meeting and Field Workshop at Mekrijärvi, Finland in Sep 2011.

Projects:

1. Crustal Evolution in the Indian Subcontinent at NCESS (2020-2025)
2. Russian Foundation for Basic Research (RFBR) grant “15-35-50162” in collaboration with Prof. Alexander Slabunov at Karelian Research Centre, Petrozavodsk, Russia (2015).
3. Isotopic Constraints on the Evolution of Bundelkhand Granitoids, Central India with Prof. Sunil Kumar Singh at Physical Research Laboratory, Ahmedabad, India (2014-2016).

Membership:

1. Member, Geochemical Society

Training Programmes/Seminars/Workshops :

1. Installation and training on MC-ICPMS at NCESS, March 2019 (15 days).
2. Pre-dispatch Inspection for MC-ICPMS at Nu Instruments factory in Wrexhem, UK, Nov 2018 (5days).
3. Scientific short course on SIMS in the Earth Sciences at Helmholtz Zentrum, Potsdam (Germany), October 2013 (1 week).
4. Organizer of IGCP-SIDA 599 Insights to the Early Earth – Field Conference in Bundelkhand Craton in Central India (7th March 2013 – 14th March 2013).
5. Summer course in the TIMS Laboratory of the National Facility for Isotope Geology and Geochronology at IIT Roorkee, May-June 2010 (1 month).
6. Summer training at Gemological Institute of India (GII), June 2007 (1 month).

Education:

Professional career:

Areas of Interests:

Atmosphere modeling, Land surface modeling and remote sensing, Thunderstorm studies.

Honours/Awards/Fellowships/Memberships:

1. Received NARL-ISRO Junior Research Fellowship (2009-2011).
2. Received NARL-ISRO Senior Research Fellowship (2011-2013).
3. WMO-WCRP research travel grant (2013).
4. APEC Climate Centre (South Korea) travel grant (2012).
5. CSIR-UGC’s NET in Earth, Atmosphere, Ocean and Planetary Sciences (2010).
6. CSIR-UGC’s NET in Physics (2007).
7. Associate: Committee on Space Research (COSPAR) (Since 2012).
8. Member: AsiaFlux (Since 2015)
9. Member: Indian Meteorological Society (2017)
10. Member: Indian Science Congress Association (2017)
11. Member: Indian Society of Remote Sensing (2017)
12. Member: Asia Oceania Geosciences Society
13. Member: European Geosciences Union
14. Member: Asia Oceania Geosciences Society (2019)
15. Member: European Geosciences Union (2020)
16. Member: American Meteorological Society (2022)
17. Member: American Geophysical Union (2023)
18. Received SIRE SERB International Research Experience (SIRE) fellowship (2023)

PhD Guideship:

1. Kerala University (Physics).
2. Cochin University of Science and Technology (Atmospheric Sciences).

Training:

1. Short course on Radar Hydrology and Hydrologic Modelling on 4 February, 2020 (IRAD2020 conference) in IIT Madras, India.
2. SPIE Asia-Pacific Remote sensing pre-symposium tutorials. 2 - 3 April 2016, New Delhi.
3. WMO/WCRP, International workshop, 13-16 May 2013, Meteo France, Toulouse, France.
4. APEC Climate Centre Training program 2012, 19-30 November 2012, APCC, Busan, South Korea.
5. WMO 6th International Verification Methods Workshop, 17-19 March, MoES, New Delhi.
6. ICTS (TIFR) International program on Dynamical modeling, 18-23 Feb. 2013, NARL, Department of Space, Gadanki.
7. Special course on Satellite Observations and Products for Agro Meteorological Applications, 01-05 Dec. 2014, Indian Institute of Remote Sensing(IIRS), ISRO, Dehradun, India.
8. Training course on Dynamic data assimilation: methods and algorithms, 23 July-3 August, 2012, NCMRWF, Govt. of India, Noida, India.
9. Workshop and training on Atmospheric Modeling for weather and climate studies, 22 June-3 July, 2010, Andhra University, A.P, India.
10. SERC School on global warming and climate change, 1-21 Dec. 2010, IITM, Pune, India.

Research campaigns:

1. Participated in one-month Sagar Kanya Ship research Cruise (SK362) in 2019 for atmospheric studies.
2. Attended airborne research campaign with UK Facility for Airborne Atmospheric Measurements(FAAM) aircraft, 6-10 July 2016, Lucknow, India.
3. Involved in MST RADAR research campaign in National Atmospheric Research Laboratory (NARL), Dept. of Space, India (2009-2013).

Education:

Professional career:

Honours/Awards/Fellowships:

1. Visiting Scientist at INRA, Avignon, France, for a period of three months to work and train on Critical Zone studies (Oct,2018 to Jan, 2019) – Funded by INRA, Avignon.
2. Post-Doctoral Research grant from CNES, France (Feb 2014 to Jan 2016).
3. Visiting research fellow at INRA, Rennes, France, (May 2012 to July 2012).
4. Visiting research fellow at INRA, Avignon, France, (Feb 2013 to March 2013).
5. Fellowship to pursue PhD in Indian Institute of Science from Ministry of Human Resources Development, India.
6. Gold Medalist and First Rank in Master of Engineering (Hydrology and Water Resources Engineering) from Centre of Water Resources, College of Engineering, Guindy, Anna University, Chennai, India for the year 2009.
7. Recipient of Dr. Jayasekar Endowment award for the “Best Outgoing Student in Master of Engineering (Hydrology and Water Resources Engineering)” from College of Engineering, Guindy, Anna University, Chennai, India for the year 2009.
8. Recipient of the Best paper award in the area of Environmental Science, Wildlife and Forestry of the 29th Kerala Science Congress, Thiruvalla, April, 2017.

Invited Lectures:

1. Invited speaker in the International Workshop on The Joy, Opportunities and Challenges in Field Hydrological Research organized by NIE, Mysore and IIT-Guwahati during 2nd to 6th November, 2020.
2. Delivered an invited lecture on the topic “Introduction to Hydrological modeling” at Dept. of Environmental Science, Kerala University, Trivandrum on 30th Jan, 2018.
3. Delivered an invited lecture on the topic “Introduction to modeling and inverse modeling” at Dept. of Environmental Science, Kerala University, Trivandrum on 29th Jan, 2018.
4. Delivered an invited lecture on the topic “Introduction to inverse modeling in hydrogeology” at Dept. of Geology, Anna University, Chennai on 10th Jan, 2018.

Training:

1. Water Resources Modelling (MIKE HYDRO and MIKE FLOOD), 6-10th May, 2019 at NIT Calicut.
2. Brainstorming meeting on Critical Zone Observatories, conducted by CSIR-NEERI, Nagpur during 28th and 29th May, 2019.
3. Indo-French monsoon school on Remote Sensing held at IISc, Bangalore during 29th to 30th October, 2019.
4. 5-day workshop on Remote Sensing of Soil Moisture and its Geophysical Applications at IIT Delhi during 12th to 16th February, 2018 (GIAN).
5. 2-Day workshop on SWAT-MODFLOW at IIT Madras during 8th and 9th January, 2018.
6. 1-Day iMOD ground water modeling workshop at NASC complex New Delhi on 14th December 2017.
7. 6-day training on Techniques in Hyperspectral data analysis and Processing (29th May to 3rd June, 2017) at IIT BHU, Varanasi.
8. 4-day MATLAB training on Data processing, Image processing and computer vision analysis during 26th to 29th Sep, 2016 at NCESS, Thiruvananthapuram.
9. 3-day-training on Virtual laboratory environment (VLE) - a platform for coupling models (25/11/2011 to 27/11/2011) @ INRA, Toulouse, France.
10. 3-day training on STICS crop model (01/04/2014 to 03/04/2014) @ INRA, Laon, France.
11. 5-day-training on STICS crop model and RECORD Platform (a platform for coupling models) (13/10/2014 to 17/10/2014) @ NBSSLUP, Bangalore, India.
12. 3-day training on writing scientific articles (09/03/2015 to 11/03/2015) @ INRA, Sophia Antipolis, France.
13. 3-day training on ‘Introduction to R’ (15/12/2015 to 17/12/2015) @ INRA, Avignon, France.
14. 3-day training on ‘Statistical treatment of data with R’ (12/01/2016 to 14/01/2016) @ INRA, Avignon, France.
15. 3-day training on ‘Advanced R’ (21/06/2016 to 23/06/2016) @ INRA, Avignon, France.

Projects:

1. Critical zone characteristics of selected watersheds of Western Ghats, (2016, Ongoing) at NCESS.
2. ATCHA, Accompanying The adaptation of irrigated agriculture to climate CHAnge. (2017 to 2020), ANR funded (L'Agence nationale de la recherche, France) in collaboration with IISc, Bangalore/IFCWS, Bangalore.
3. RUEdesSOLS – Estimation of the soil Available Water Content by direct measurements and crop-model inversion, from the plot to the territory scales. (2015 to 2017), ANR (L'Agence nationale de la recherche), France.
4. Spatial distribution of soil hydrological properties on a watershed of South India from remote sensing data and crop model inversion. (2014 to 2016). Funded by CNES (French Space Agency), France.
5. AICHA, Adaptation of Irrigated Agriculture to Climate Change. Indo-French Project funded by CEFIPRA. (2013- 2016), IISc, Bangalore/INRA, France.
6. Estimation of soil hydraulic properties in a catchment using agro-hydrological models and microwave remote sensing. Funded by ISRO-STC (2013 -2014), IISc, Bangalore.

In Peer Reviewed Journals:

1. Petrological, geochemical and geochronological evolution of massif type charnockite from the Eastern Ghats Province, India: Implications on the regional tectonics of the Rayner-Eastern Ghats orogeny. AK Mondal, S Bose, JA Dev, JK Tomson, N Sorcar, S Mukherjee (2023) Precambrian Research 387; https://doi.org/10.1016/j.precamres.2023.106994
2. Petrography, geochemistry and detrital zircon geochronology of the Srisailam Quartzite Formation, Cuddapah Basin, India: Implications for depositional age, correlation and provenance. S Mukherjee, P Das, G Ghosh, S Bose, JA Dev, K Das, JK Tomson (2023) Precambrian Research 387; https://doi.org/10.1016/j.precamres.2023.106978
3. Neoproterozoic Mafic Magmatism in Nagercoil Block, Southern India and Its Implications on the Gondwana Collisional Orogeny. S Sajna, JK Tomson, JA Dev, N Sorcar, TV Kumar (2023) Minerals ; https://doi.org/10.3390/min12121509
4. Phase equilibrium modelling and zircon-monazite geochronology of HT-UHT granulites from Kambam ultrahigh-temperature belt, south India. J Amal Dev, N Sorcar, S Mukherjee, JK Tomson (2022) International Geology Review; https://doi.org/10.1080/00206814.2022.2091671
5. Timing of UHT metamorphism and cooling in south Indian granulites: New PTt results from a sapphirine granulite. JA Dev, JK Tomson, N Sorcar, KA Francis (2022) Precambrian Research 371; https://doi.org/10.1016/j.precamres.2022.106582
6. Combined U-Pb/Hf isotopic studies and phase equilibrium modelling of HT-UHT metapelites from Kambam ultrahigh-temperature belt, south India: Constraints on tectonothermal history of the terrane. JA Dev, JK Tomson, N Sorcar, V Nandakumar (2021) Lithos; https://doi.org/10.1016/j.lithos.2021.106531
7. Characterization of multiple episodes of melt generation from lower crust during Archaean using amphibole composition. KB Joshi, N Sorcar, NC Pant, V Nandakumar, T Ahmad, JK Tomson (2021) Episodes Journal of International Geoscience 44 (4), 443-466
8. Mantle deformation beneath the Western Ghats, India: Insights from core-refracted shear wave splitting analysis C Sribin, BP Rao, MR Kumar, JK Tomson (2021) Journal of Asian Earth Sciences; https://doi.org/10.1016/j.jseaes.2021.104848
9. Geochemical and isotopic studies of potassic granite from the western Dharwar Craton, southern India: Implications for crustal reworking in the Neoarchean. S Sebastian, R Bhutani, S Balakrishnan, JK Tomson, AD Shukla (2021) Geological Journal; https://doi.org/10.1002/gj.4085
10. Corrigendum to “Characterization of partial melting events in garnet-cordierite gneiss from the Kerala Khondalite Belt, India”[Geosci. Front. 11 (2020), 597-611] N Sorcar, KB Joshi, EP Oliveira, JK Tomson, V Nandakumar, Geoscience Frontiers 12 (2), 693-694
11. Detection of soil pipes through remote sensing and electrical resistivity method: Insight from southern Western Ghats, India. M Joshi, PR Prasobh, S Rajappan, BP Rao, A Gond, A Misra, K Eldhose, V Nandakumar, JK Tomson (2021) Quaternary International; https://doi.org/10.1016/j.quaint.2020.08.021
12. Geochemistry of NW-SE trending Palaeoproterozoic mafic dyke intrusions in the Bundelkhand Craton, India and subcontinental lithospheric mantle processes. T Radhakrishna, JK Tomson, R Chandra, C Ramakrishna (2020) Precambrian Research; https://doi.org/10.1016/j.precamres.2020.105956
13. Characterization of partial melting events in garnet-cordierite gneiss from the Kerala Khondalite Belt, India. N Sorcar, KB Joshi, EP Oliveira, JK Tomson, V Nandakumar (2020) Geoscience Frontiers; https://doi.org/10.1016/j.gsf.2019.05.013
14. Zircon U-Pb ages and Hf isotopic systematics of charnockite gneisses from the Ediacaran–Cambrian high-grade metamorphic terranes, southern India:Constraints on crust formation, recycling, and Gondwana correlations.” T. Vijaya Kumar, Y.J. Bhaskar Rao, Diana Plavsa, Alan Collins, J.K. Tomson, B. Vijaya Gopal, EVSSK Babu (2017) GSA Bulletin; May/June 2017; v. 129; no. 5/6; p. 625–648;
15. “Geochemistry and Neodymium model ages of Precambrian charnockites, Southern Granulite Terrain, south India: constraints on terrain assembly.” J.K. Tomson, Y.J. Bhaskar Rao, T. Vijaya Kumar, and A. K. Choudhary (2013), Precambrian Research, 227, pp-295-315.
16. “The LAM-MC-ICPMS National Facility at the National Geophysical Research Institute (NGRI), Council of Scientific and Industrial Research, Hyderabad.” Y.J. Bhaskar Rao, B.Vijaya Gopal, EVSSK Babu, N.P.Sukumaran, T.Vijaya Kumar, J.K.Tomson, KVSS Krishna DST News Letter, August 2009, pp.11-13.
17. J.K. Tomson, Y.J. Bhaskar Rao, T. Vijaya Kumar and J. Mallikharjuna Rao (2006), Charnockite genesis across the Archaean – Proterozoic Terrane boundary in the South Indian Granulite Terrain: constraints from major-trace element geochemistry and Sr-Nd isotopic systematics, Gondwana Research, 10, pp-115-127.
18. Y.J. Bhaskar Rao, T. Vijaya Kumar, K.V.S.S.Krishna, J.K.Tomson (2008),The emerging pattern of crust-formation and recycling history in the Precambrian Dharwar Craton and the Southern Granulite Terrain, southern India: Constraints from recent geochronological and isotopic results. Geol.Soc.India, 74, 147-168.
19. J.K. Tomson, Y.J. Bhaskar Rao, T. Vijaya Kumar, A.K. Choudhary (2009) Widespread intracrustal melting and the generation of charnockites in the Neoproterozoic Maduarai Block, South India., Geochimica et Cosmochimica Acta, 73, A1339.
20. T. Vijayakumar, Y.J.Bhaskar Rao, J.K. Tomson, A.K. Choudhary (2009), Role of deep crustal contamination in the genesis of Perinthatta anorthosite massif, South India. Geochimica et Cosmochimica Acta, 73, A1383.
21. J.K. Tomson, Y.J. Bhaskar Rao, T. Vijaya Kumar, A.K. Choudhary (2008)  Geochemistry and Sr-Nd isotopic systematics of Archaean and Neoproterozoic charnockites from the Southern Granulite Terrain, South India: Magma genesis and tectonics.  Geochimica et Cosmochimica Acta, 72, 2S-A951
22. Vijayakumar, Y.J.Bhaskar Rao, J.K. Tomson, A.K. Choudhary (2008), A Mesoproterozoic Sm-Nd age for the Oddanchatram anorthosite massif, South India: Evidence for ancient crustal contamination and significance to the regional terrane assembly. Geochimica et Cosmochimica Acta, 72, 2S- A984.

List of papers presented in conferences:

1. Crustal evolution of south Indian granulites: Insights from zircon Hf isotopes. JK Tomson, JA Dev (2022) Goldschmidt Conference
2. U-Pb baddeleyite and zircon ages from Kambam Carbonatite, south India and implications on regional tectonics. JA Dev, JK Tomson, (2022) Goldschmidt Conference
3. Unravelling the cooling history of HT-UHT rocks from South India: New evidences from LA-ICPMS analysis of rutiles JA Dev, N Sorcar, JK Tomson (2021) Goldschmidt Conference
4. Decoding Rodinia events in South India: Evidences from late-Tonian ages within granulites JK Tomson, S Sajna, N Sorcar, V Nandakumar (2020) AGU Fall Meeting
5. Mantle deformation beneath the southern part of Western Ghats. C Sribin, P Rao, JK Tomson (2020) AGU Fall Meeting
6. “Zircon U-Pb ages and Hf-isotopic compositions of Late Archean charnockites from the Biligiri Rangan, Nilgiri, Vythiri, and Coorg granulite massifs, the Southern Granulite Terrain, S. India: constraints on terrane assembly and charnockite precursors.”T. Vijaya Kumar, Y.J. Bhaskar Rao, Chris Clark, Richard Taylor, J.K. Tomson, B. Sreenivas, E.V.S.S.K. Babu and B. Vijaya Gopal (2013) in Granulites & Granulites Conference, Hyderabad.
7. “NGRI LAM-MC-ICPMS National Facility: Reproducibility of Sr, Nd and Hf isotopic measurements.” Y.J. Bhaskar Rao, B.Vijaya Gopal, EVSSK Babu, N.P.Sukumaran, T.Vijaya Kumar, KVSS Krishna, J.K.Tomson (2009), In Proceedings of 11th ISMAS-TRICON-2009, Hyderabad, pp.52-57.
8. “Sr, Nd, Hf and Pb isotopic characterization of the USGS BCR-2 Standard: Results from the NGRI MC-ICPMS Facility.” N.P.Sukumaran, T.Vijaya Kumar, J.K.Tomson, KVSS Krishna, B.Vijaya Gopal, Y.J. Bhaskar Rao, EVSSK Babu (2009), In Proceedings of 11th ISMAS-TRICON- 2009, Hyderabad, pp.518-521.
9. “Sm-Nd and Rb-Sr ages and isotopic constraints on Precambrian terrain assembly aroundCauvery shear zone system, Southern Granulite Terrain, South India.” Y.J.Bhaskar Rao, T. Vijayakumar, J.K. Tomson, A.M.Dayal (2004), In Proceedings of the International Workshop on Tectonics and Evolution of the Precambrian Southern Granulite Terrain, India and Gondwanian correlations, Feb.18-25, NGRI, Hyderabad.