Photo

Jyotiranjan S Ray

Present Position : Professor
E-mail: jsray@prl.res.in
Telephone: +91-79-26314165


General Research Interests

Using isotopes and trace elements as tracers I seek to understand

Past Graduate Students

Postdoctoral Fellows

Awards & Honours

Selected Publications

  1. B.G. George, J.S. Ray and others: Stratigraphy and geochemistry of the Balwan Limestone, Vindhyan Supergroup, India: Evidence for the Bitter Springs del13C anomaly Precambrian Research 313, 18-30, 2018.
  2. I. Gautam, J.S. Ray, and others: Role of fractionation correction in accurate determination of 142Nd/144Nd by TIMS: A case study of 1.48 Ga alkaline rocks from Khariar, India, Chemical Geology http://dx.doi.org/10.1016/j.chemgeo.2017.06.036, 2017.
  3. A. Chatterjee and J.S. Ray, Sources and depositional pathways of mid-Holocene sediments in the Great Rann of Kachchh, India: Implications for fluvial scenario during the Harappan Culture, Quaternary International 443, 177-187, 2017.
  4. J.S. Ray, K. Pande and R. Bhutani, 40Ar/39Ar geochronology of subaerial lava flows of Barren Island volcano and the deep crust beneath the Andaman Island Arc, Burma Microplate, Bulletin of Volcanology 77:57, 1-10, 2015.
  5. N. Awasthi, J.S. Ray and others, Provenance of the late quaternary sediments in the Andaman Sea: Implications for monsoon variability and ocean circulation, Geochemistry, Geophysics, Geosystems DOI: 10.1002/2014GC005462, 2014.
  6. J.S. Ray, Pande, K., Bhutani, R., and others, Age and geochemistry of the Newania dolomite carbonatites, India: implications for the source of primary carbonatite magma, Contributions to Mineralogy and Petrology DOI: 10.1007/s00410-013-0945-7, 2013.
  7. J.S. Ray, Kumar, A., and others, Origin of gases and water in mud volcanoes of Andaman accretionary prism: implications for fluid migration in forearcs, Chemical Geology 347, 102-113, 2013.
  8. J.S. Ray, Mahoney, J.J., and others, Chronology and geochemistry of lavas from the Nazca Ridge and Easter Seamount Chain: a ~30 Myr hotspot record, Journal of Petrology 53, 1417-1448, 2012.
  9. N. Awasthi, J.S. Ray, and others, Major ash eruptions of Barren Island Volcano (Andaman Sea) during the past 72 kyr: clues from a sediment core record, Bulletin of Volcanology 72, 1131-1136, 2010.
  10. J.S. Ray, Radiogenic isotopic ratio variations in carbonatites and associated alkaline silicate rocks: Role of crustal assimilation, Journal of Petrology 50, 1935-1954, 2009.
  11. H.C. Sheth, J.S. Ray, and others, Volcanology and eruptive styles of Barren Island: an active mafic stratovolcano in the Andaman Sea, NE Indian Ocean, Bulletin of Volcanology 71, 1021-1039, 2009.
  12. H.C. Sheth, J.S. Ray, and others, Geology and geochemistry of Pachmarhi dykes and sills, Satpura Gondwana Basin, central India: problems of dyke-sill flow correlations in the Deccan Traps, Contributions to Mineralogy and Petrology 158, 357-380, 2009.
  13. J.S. Ray, Shukla, A.D., and Dewangan, L.K., Carbon and oxygen isotopic compositions of Newania dolomite carbonatites, Rajasthan, India: implication for source of carbonatites, Mineralogy and Petrology DOI 10.1007/s00710-009-0073-2, 2009.
  14. J.S. Ray, Age of Vindhyan Supergroup: A review of recent findings, Journal of Earth System Science 115, 149-160, 2006.
  15. J.S. Ray, and R. Ramesh, Stable carbon and oxygen isotopic compositions of Indian carbonatites, International Geology Review 48, 17-45, 2006.
  16. J.S. Ray, S.K. Pattanayak and Kanchan Pande, Rapid emplacement of the Kerguelen plume-related Sylhet Traps, eastern India: Evidence from 40Ar-39Ar geochronology, Geophysical Research Letters 32, L10303, 2005.
  17. J.S. Ray, J. Veizer, and W.J. Davis, C, O, Sr and Pb isotope systematics of carbonate sequences of the Vindhyan Supergroup, India: age, correlations and implications for global events, Precambrian Research 121, 103-140, 2003.
  18. J.S. Ray, M.W. Martin, S. Bowring and J. Veizer, U-Pb geochronology and Sr isotope stratigraphy of the Vindhyan Supergroup, India, Geology 30, 131-134, 2002.
  19. J.S. Ray and R. Ramesh, Rayleigh stable isotopic fractionation from a multicomponent source, Geochimica et Cosmochimica Acta 64, 299-306, 2000.
  20. J.S. Ray, and R. Ramesh, Evolution of carbonatite complexes of Deccan flood basalt province, India: Stable carbon and oxygen isotopic constraints, Journal of Geophysical Research 104, 29, 471-29, 482, 1999.
  21. J.S. Ray, R. Ramesh and K. Pande, Carbon isotopes in Kerguelen-plume derived carbonatites: evidence for recycled inorganic Carbon, Earth and Planetary Science Letters 170, 205-214, 1999.
  22. J.S. Ray, and K. Pande, Carbonatite-alkaline magmatism associated with continental flood basalts at stratigraphic boundaries: cause for mass extinctions, Geophysical Research Letters 26, 1917-1920, 1999.
  23. J.S. Ray, Trace element and isotope evolution during concurrent assimilation, fractional crystallization and liquid immiscibility of a carbonated silicate magma, Geochimica et Cosmochimica Acta 62, 3301-3306, 1998.