Dr. Tarun C. Khanna

CSIR-National Geophysical Research Institute, India.

Overview

As a geologist for the past 23 years, I have developed an interdisciplinary approach with core competence in the field of geochemistry. My research studies are focused upon early evolution of the Earth, crust-mantle interaction processes, subduction zone magmatism, and plume-related magmatism. My scientific and academic aptitudes have contributed significantly to the growth and development of my organization, as a team member as well as an independent researcher. I look forward to working with a dedicated team that produces high quality research through advanced materials and methods, and translate the scientific outcome to products of relevance to the scientific community, industry and society.

Education

CSIR-Raman Research Fellow (2020) -> University of South Carolina, Columbia SC, USA.

Post Doc 2010-2011 -> University of South Carolina, Columbia SC, USA.

Ph.D. 2007 -> Department of Geology, Osmania University, Hyderabad, India.

M.Sc. 2002 -> Department of Geology, Osmania University, Hyderabad, India.

B.Sc. 2000 -> Bhavans New Science College, Hyderabad, India.

Specialization

• Geology and geochemistry

• Radiogenic (Sr-Nd-Pb-Hf) isotope geochemistry

• Crust-mantle interaction processes

• Subduction zone magmatism

• Plume magmatism

Current Position and Professional History

• Senior Principal Scientist, CSIR-NGRI, India -> 2025-Present

• Principal Scientist, CSIR-NGRI, India -> 2020-2025

• Senior Scientist, CSIR-NGRI, India -> 2016-2020

• Scientist, CSIR-NGRI, India -> 2011-2016

• Junior Scientist, CSIR-NGRI, India -> 2008-2011

• Research Scholar, CSIR-NGRI, India -> 2002-2008

• Geology and geochemistry
• Radiogenic (Sr-Nd-Pb-Hf) isotope geochemistry
• Crust-mantle interaction processes
• Subduction zone magmatism
• Plume magmatism

• Tarun C. Khanna, Sarma, D.S., Raichur Schist Belt, eastern Dharwar Craton, India: A geochemical analogue of western Aleutian arc. Lithos https://doi.org/10.1016/j.lithos.2025.108263
• Tarun C. Khanna, Barbeau, D.L. Jr., Zircon U-Pb geochronology and geochemistry of hot subduction volcanic suite in the deep bore-hole well-core KBH-5: Evidence of Neoarchean Shimoga greenstone belt beneath the Cretaceous Deccan Traps, India. Lithos 482-483, 107692 https://doi.org/10.1016/j.lithos.2024.107692
• Tarun C. Khanna, Barbeau, D. L. Jr., Arora K., Sariput, S. Petrogenesis of Neoarchean granitoids beneath the Koyna-Warna region, Deccan Volcanic Province, India. Journal of Asian Earth Sciences 241, 105455 https://doi.org/10.1016/j.jseaes.2022.105455
• Tarun C. Khanna, Kanakdande, P.K., Bizimis, M., Arora, K. Geochemical benchmarks in the Phanerozoic LIPs constrained from well-cores in the Deccan Volcanic Province, India. Lithos 462-463, 107403 https://doi.org/10.1016/j.lithos.2023.107403
• Tarun C. Khanna and Arora, K. Elusive origin of the subsurface tephra in the Deccan volcanic province, India. Journal of Earth System Science 131, 58
• Tarun C. Khanna and Jaffri, S.H. ~2.5 Ga asthenospheric-melt impregnated continental crust: Implications for sporadically eroded lithosphere beneath the Dharwar craton, India. Precambrian Research, v. 358, https://doi.org/10.1016/j.precamres.2021.106184
• Tarun C. Khanna and Sesha Sai, V.V. Petrogenesis of low-Ti and high-Ti basalt, adakite and rhyolite association in the Peddavuru greenstone belt, eastern Dharwar craton, India: A Neoarchean analogue of Phanerozoic-type back-arc magmatism. Geochemistry, v. 80, https://doi.org/10.1016/j.chemer.2020.125606
• Tarun C. Khanna, Subba Rao, D.V., Sesha Sai, V.V., Satyanarayanan, M. Ca 2.5 Ga Mahakoshal Supracrustal Belt: An Allocthonous terrain in Central India Tectonic Zone. Lithos, v. 374-375, https://doi.org/10.1016/j.lithos.2020.105705
• Tarun C. Khanna, Arora, K., Raza, H., Chadha, R.K., Gupta, H.K. Bore-hole Well-Cores Provide Evidence for Crustal Heterogeneity Beneath the Koyna- Warna Reservoir Site, Deccan Volcanic Province, India. Journal Geological Society of India, v. 96, pp. 36 – 42.
• Tarun C. Khanna, Bizimis, M., Barbeau, D.L., Krishna, A.K., Sesha Sai, V.V. Evolution of ca. 2.5 Ga Dongargarh volcano-sedimentary Supergroup, Bastar craton, central India: Constraints from zircon U-Pb geochronology, bulk-rock geochemistry and Hf-Nd isotope systematics. Earth-Science Reviews, v. 190, pp. 273 – 309.
• Tarun C. Khanna, Sesha Sai, V.V., Jaffri, S.H., Keshav Krishna, A., Korakoppa, M.M. Boninites in the ~3.3 Ga Holenarsipur greenstone belt, western Dharwar craton, India. Geosciences 8, 248; doi: 10.3390/geosciences8070248.
• Tarun C. Khanna, Sesha Sai, V,V. Petrology, mineral chemistry and geochemistry of the chromian muscovite bearing quartzite in the Neoarchean Veligallu schist belt, eastern Dharwar craton, India. Journal Indian Geophysical Union, v. 22 (3), pp. 325 – 332.
• Sesha Sai, V.V., Mahapatro, S.N., Bhattacharjee, S., Tarun C. Khanna, Korakoppa, M.M. Petrology and Mineral Chemistry of a Porphyritic Mafic Dyke, Jonnagiri Schist Belt, Eastern Dharwar Craton, India: Implications for Its Magmatic Origin. In Dyke swarms of the world: A modern perspective (Eds.) Rajesh K. Srivastava, Richard E. Ernst, Peng Peng. Springer geology book series, pp. 391 – 414.
• Tarun C. Khanna, Subba Rao, D.V., Bizimis, M., Satyanarayanan, M., Keshav Krishna, A., Sesha Sai, V.V. ~2.1 Ga intraoceanic magmatism in the Central India Tectonic Zone: Constraints from the petrogenesis of Ferropicrites in the Mahakoshal supracrustal belt. Precambrian Research, v. 302, pp. 1 – 17.
• Tarun C. Khanna. Lutetium-Hafnium isotope evidence for the cogenesis of Neoarchean Veligallu and Gadwal greenstone belts, eastern Dharwar craton, India. Journal Indian Geophysical Union, v. 21 (3), pp. 198 – 206.
• Sesha Sai, V.V, Tripathy, V., Bhattacharjee, S., Tarun C. Khanna. Paleoproterozoic magmatism in the Cuddapah basin, India. Journal Indian Geophysical Union, v. 21 (6), pp. 516 – 525.
• Tarun C. Khanna, Sesha Sai, V.V., Bizimis, M., Keshav Krishna, A. Petrogenesis of ultramafics in the Neoarchean Veligallu greenstone terrane, eastern Dharwar craton, India: Constraints from bulk-rock geochemistry and Lu-Hf isotopes. Precambrian Research, v. 285, pp. 186 – 201.
• Keshav Krishna, A., Tarun C. Khanna, Rama Mohan, K. Rapid quantitative determination of major and trace elements in silicate rocks and soils employing fused glass discs using wave length dispersive X-ray fluorescence spectrometry. Spectrochimica Acta Part B, v. 122, pp. 165 – 171.
• Sesha Sai, V.V., Tarun C. Khanna, Rama Krishna Reddy, N. Red beds in the Cuddapah Basin, eastern Dharwar craton, India: Implications for the initiation of sedimentation during the Proterozoic Oxygenation event. Journal Indian Geophysical Union, v. 20 (3), pp. 342-350.
• Tarun C. Khanna, Babu, E.V.S.S.K., Guochun C. Zhao, Satyanarayanan, M., Keshav Krishna, A., Sawant, S.S. Geochemistry and petrogenesis of mafic alkaline dikes to the east of Gadwal greenstone terrane: Implications for OIB-type magmatism in parts of the eastern Dharwar craton, India. Journal of Indian Geophysical Union, v. 20 (1), pp. 49 – 62.
• Tarun C. Khanna, Sesha Sai, V.V., Bizimis, M., Keshav Krishna, A. Petrogenesis of basalt–High-Mg andesite–adakite in the Neoarchean Veligallu greenstone terrane: Geochemical evidence for a rifted back-arc crust in the eastern Dharwar craton, India. Precambrian Research, v. 258, pp. 260 – 277.
• Venkateshwarlu, M., Tarun C. Khanna. Palaeomagnetic and Rock Magnetic Investigations on Gadwal “Dike 2”, Eastern Dharwar Craton, India. Journal of Indian Geophysical Union, v. 19, pp. 447 – 453.
• Tarun C. Khanna, Bizimis, M., Yogodzinski, G.M., Mallick, S. Hafnium – Neodymium isotopic systematics of the 2.7 Ga Gadwal greenstone terrane, eastern Dharwar Craton, India: Implications for the evolution of the Archean depleted mantle. Geochimica et Cosmochimica Acta, v. 127, pp. 10 – 24.
• Tarun C. Khanna, Sesha Sai, V.V., Zhao, G.C., Subba Rao, D.V., Keshav Krishna, A., Sawant, S.S., Charan, S. N. Petrogenesis of Mafic alkaline dikes from the ~2.18 Ga Mahabubnagar Large Igneous Province, eastern Dharwar craton, India: Geochemical evidence for uncontaminated intracontinental mantle derived magmatism. Lithos, v. 179, pp. 84 – 98.
• Tarun C. Khanna, Geochemical evidence for a paired Arc – Back-arc association in the Neoarchean Gadwal greenstone belt, eastern Dharwar craton, India. Current Science, v. 104, pp. 632 – 640.
• Lakshminarayana, G., Manikyamba, C., Tarun C. Khanna., Prachiti P.K., Raju, K. New observations on Rajahmundry traps of the Krishna-Godavari basin. Journal of the Geological Society of India, v. 75, pp. 807 – 819.
• Manikyamba, C., Kerrich, R., Tarun C. Khanna., Satyanarayanan, M., Keshav Krishna, A. Enriched and depleted arc basalts, with High-Mg andesites and adakites: a potential paired arc-backarc of the 2.7 Ga Hutti greenstone terrane, India. Geochimica et Cosmochimica Acta, v. 1711-1736.
• Tarun C. Khanna, Manikyamba, C., Subba Rao, D.V., Prachiti, P.K., Raju, K. Geochemistry and petrogenesis of Gadwal kimberlites, Eastern Dharwar craton, India. Journal of Applied Geochemistry, v.11, pp.315 – 327.
• Manikyamba, C., Tarun C Khanna, Prachiti, P.K., Raju, K. High Mg magmas of diverse tectonic settings. Journal of Applied Geochemistry, v.11, pp. 328 – 346.
• Tarun C. Khanna, Manikyamba, C., Prachiti, P.K., Keshav Krishna, A. Heterogeneous mantle wedge: Implications for the genesis of boninites in Gadwal greenstone belt, eastern Dharwar craton, India. In: Magmatism Tectonism and Metallogeny (Ed.) M. Santosh Kumar. p. 1 – 13.
• Manikyamba, C., Kerrich, R., Tarun C. Khanna., Keshav Krishna, A., Satyanarayanan, M. Geochemical systematics of komatiite-tholeiite and adakite-arc basalt associations: The role of a mantle plume and convergent margin in formation of the Sandur Superterrane, Dharwar craton, India. Lithos, v. 106, pp. 155 – 172.
• Manikyamba, C., Robert Kerrich., Álvarez, I.G., Ramavati, M., Tarun C. Khanna. Geochemistry of Paleoproterozoic black shales from the Intracontinental Cuddapah basin, India: implications for provenance, tectonic setting, and weathering intensity. Precambrian Research, v. 162, pp. 424 – 440.
• Manikyamba, C., Tarun C. Khanna. Crustal growth processes as illustrated by the Neoarchaean intraoceanic magmatism from Gadwal Greenstone Belt, eastern Dharwar Craton, India. Gondwana Research, v. 11, pp. 476 – 491.
• Manikyamba, C., Kerrich, R., Tarun C. Khanna., Subba Rao, D.V. Geochemistry of Adakites and Rhyolites from the Neoarchaean Gadwal Greenstone Belt, Eastern Dharwar Craton India: Implications for sources and Geodynamic setting. Canadian Journal of Earth Sciences, v. 44, pp. 1517-1535.
• Naqvi, S.M., Khan R.M.K., Manikyamba, C., Ram Mohan, M., Tarun C. Khanna. Geochemistry of the Neoarchaean high Mg-basalts, boninites and adakites from Kushtagi-Hungund greenstone belt of the Eastern Dharwar Craton (EDC): Implications for the Tectonic Setting. Journal of Asian Earth Science, v.27, pp. 25 – 44.
• Manikyamba, C., Naqvi, S.M., Subba Rao D.V., Ram Mohan, M., Tarun C. Khanna., Rao, T. G., Reddy, G. L. N. Boninites from the Neoarchean Gadwal greenstone belt, eastern Dharwar craton, India: Implications for Archean subduction processes. Earth and Planetary Science Letters, v.230, pp. 65 – 83.

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