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Anil K. Gupta (born 1960), FNA,FASc,FNASc,FTWAS, J.C. Bose National Fellow is an eminent Indian scientist, researcher and a professor in Department of Geology and Geophysics at IIT Kharagpur. He is currently the Director of prestigious Wadia Institute of Himalayan Geology, Dehradun. which is the only research institute in the world dedicated towards the research on the geology of the Himalayas.

Career
He started his career as a lecturer at IIT Kharagpur in the year 1987. He then became Assistant Professor at IIT Kharagpur in 1990. Subsequently he went on to become Associate Professor in the year 1999 and Professor in 2003 in IIT Kharagpur. He was appointed as the head of Department of Geology and Geophysics in IIT Kharagpur during 2006-2009. Later on he was selected as the Director of Wadia Institute of Himalayan Geology, Dehradun in August 2010 the post that he is holding till date.

Thesis Supervised
He has supervised 11 thesis till date.

National and International Awards/Recognition

 * Elected as Member, Council, National Academy of Sciences, Allahabad, India in 2014
 * Elected as Fellow of The Indian National Science Academy, New Delhi, in 2012
 * Received the prestigious J.C. Bose Fellowship in the year 2012
 * Was elected as Vice-President of the Indian Geophysical Union for 2011-2013
 * Prof. Gupta received the prestigious TWAS Prize in the year 2010

Membership of Professional Societies

 * Life Fellow of the Indian Geophysical Union, Hyderabad.
 * Fellow of the Geological,Mining & Metallurgical Society of India,Calcutta
 * Fellow of the Geological Society of India,Bangalore
 * Fellow of the Paleontological Society of India,Lucknow
 * Life Member, Indian Science Congress Association

Projects Undertaken

 * 1) "Late Neogene benthic foraminiferal biostratigraphy and paleoceanography of the western Indian Ocean" funded by CSIR, New Delhi. Total cost of the project: Rs. 5.5 lakhs. Duration: February 1992 to March, 1995.
 * 2) "Multivariate statistical analyses of Neogene deep-sea benthic foraminifera from Ocean Drilling Program (ODP) Leg 121, eastern Indian Ocean" funded by Department of Science & Technology, New Delhi. Total cost of the project: Rs.11.0 lakhs. Duration: March 1996 to September, 1999.
 * 3) "Neogene record of climatic variability and deep ocean circulation at Ocean Drilling Program Sites 752A and 757B, eastern & southeastern Indian Ocean: A benthic faunal perspective", CSIR, New Delhi. Total cost: Rs. 7.5 lakhs. Duration: Feb. 2002 to January 2006.
 * 4) "Decadal scale variability in the Indian Ocean summer monsoon during the Holocene" Department of Science and Technology, New Delhi. Total Cost 19.5 Lakhs. Duration: March 2004 to February 2007.
 * 5) "Evolution of the Indian Monsoon system during the Neogene - Suborbital to Orbital changes" Department of Science and Technology, New Delhi. Total Cost 19 Lakhs. Duration: September 2008 to August 2011.
 * 6) Monsoon driven changes as preserved in marine sediments off Gujarat and Konkan coasts during the past 20 Kyr. Ministry of Earth Sciences, New Delhi. Total cost Rs. 42.00 Lakhs. Duration: June 2010-May 2013.
 * 7) The Indian Continental Shelf as a potential source of Phosphate (A proposal to carry out mineral potential mapping by using Remote Sensing, GIS and geochemical signals). Ministry of Earth Sciences, New Delhi. Total cost Rs. 92.00 Lakhs. Duration: August 2010-July 2013.

International Publications

 * Tiwari, S.K., Rai, S.K., Bartarya, S.K., Gupta, A.K., and Negi, M., 2016. Stable isotopes (δ13CDIC, δD, δ18O) and geochemical characteristics of geothermal springs of Ladakh and Himachal (India): Evidence for CO2 discharge in northwest Himalaya. Geothermics, v. 64, p. 314-330.
 * Ahluwalia,R.S.,Rai, S.P., Gupta, A.K., Dobhal, D.P., Tiwari, R.K., Garg, P.K. and Kesharwani, K., 2016. Towards the understanding of the flash flood through isotope approach in Kedarnath valley in June 2013, Central Himalaya, India. Natural Hazards, v. 82, p. 321-332.
 * Acharya, S.S., Panigrahi, M.K., Kurian, J., Gupta, A.K., Tripathy, S., 2016. Speciation of phosphorus in the continental shelf sediments in theEastern Arabian Sea. Continental Shelf Research, v. 115, p. 65-75.
 * RakeshBhambri, Mehta, M., Dobhal, D.P., Gupta, A.K., BhanuPratap, Kesarwani, K., Verma, A., 2016. Devastation in the Kedarnath (Mandakini) Valley, Garhwal Himalaya, during 16–17 June 2013: a remote sensing and ground-based assessment. Natural Hazards, 80 (3), 1801–1822 (DOI 10.1007/s11069-015-2033-y).
 * Rawat, S., Gupta, A.K., Srivastava, P., Sangode, S.J., Nainwal, H.C., 2015. A 13,000 year record of environmental magnetic variations in the lake and peat deposits from the Chandra valley, Lahaul: Implications to Holocene monsoonal variability in the NW Himalaya. Palaeogeography, Palaeoclimatology, Palaeoecology, doi: 10.1016/j.palaeo.2015.08.044.
 * Gupta, A.K., Yuvaraja, A., Prakasam, M., Clemens, S.C. and Velu, A., 2015. Evolution of the South Asian monsoon wind system since the late Middle Miocene. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 438, p. 160-167.
 * Dutt, S., Gupta, A.K., Clemens, S.C., Cheng, H. Singh, R.K., Kathayat, G., and Edwards, R.L., 2015. Abrupt changes in Indian Summer Monsoon strength during 33,800 to 5500 years B.P. Geophysical Research Letters, DOI: 10.1002/2015GL064015.
 * Acharya, S.S., Panigrahi, M.K., Gupta, A.K., Tripathy, S., 2015. Response of trace metal redox proxies in continental shelf environment: Eastern Arabian Sea scenario. Continental Shelf Research, v. 106, p. 70-84.
 * Singh, D.S., Gupta, A.K., Sangode, S.J., Clemens, S.C., Prakasam, M., Srivastava, P. Prajapati, S.K., 2015. Multiproxy record of monsoon variability from the Ganga plain during 400-1200 A.D. Quaternary International, online
 * Rawat. S., Gupta, A.K., Sangode, S.J., Srivastava, P., and Nainwal, H.C., 2015. Late Pleistocene – Holocene vegetation and Indian summer monsoon record from the Lahaul, Northwest Himalaya, India. Quaternary Science Reviews, v. 114, p. 167-181.
 * Yuvaraja, A., Gupta, A.K., and Panigrahi, M.K., 2014. Species diversity variations in Neogene deep-sea benthic foraminifera at ODP Hole 730A, western Arabian Sea. Journal of Earth System Science, v. 123 (7), p. 1671-1680.
 * Yuvaraja, A., Gupta, A.K., and Panigrahi, M.K., 2014. Species diversity variations in Neogene deep-sea benthic foraminifera at ODP Hole 730A, western Arabian Sea. Journal of Earth System Science, v. 123 (7), p. 1671-1680.
 * Mehta, M., Dobhal, D.P., Pratap, B., Zahid, M., Gupta, A. K., and Srivastava, P., 2014. Late Quaternary glacial advances in the Tons River Valley, Garhwal Himalaya, India and regional synchronicity. The Holocene, v. 24 (10), 1336-1350.
 * Bhaumik, A.K., Gupta, A.K.,, Ray, S., 2014. Surface and deep-water variability at the Blake Ridge, NWAtlantic during the Plio-Pleistocene is linked to the closing of the Central American Seaway. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 399, p. 345-351.
 * Sarkar, S. and Gupta, A.K.,, 2014. Late Quaternary productivity changes in the equatorial Indian Ocean (ODP Hole 716A). Palaeogeography, Palaeoclimatology, Palaeoecology, v. 397, p. 7-19.
 * Srivastava, P., Kumar, A., Mishra, A., Meena, N.K., Tripathi, J.K., Sundriyal, Y.P., Agnihotri, R., Gupta, A.K.,, 2013. Early Holocene monsoonal fluctuations in the Garhwal higher Himalaya as inferred from multi-proxy data from the Malaripaleolake. Quaternary Research, v. 80, p. 447-458.
 * Gupta, A.K.,, Mohan, K., Das, M., and Singh, R.K., 2013. Solar forcing of the Indian summer monsoon variability during the Allerød period. Scientific Reports, v. 3, 2753; DOI:10.1038/srep02753 (Nature Publishing House).
 * Verma, S., Gupta, A.K.,, Singh, R.K., 2013. Variations in deep-sea benthic foraminifera at ODP Hole 756B, southeastern Indian Ocean: Evidence for changes in deep ocean circulation. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 376, p. 172-183, doi: 10.1016/j. palaeo.2013.02.034.
 * Singh, R.K., Gupta, A.K., and Das, M., 2012. Paleoceanographic significance of deep-sea benthic foraminiferal species diversity at southeastern Indian Ocean Hole 752A during the Neogene. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 361-362, p. 94-103, http://dx.doi.org/10.1016/ j.palaeo.2012.08.008.
 * Mohan, K. Gupta, A.K.,, and Bhaumik, A.K. 2011. Late Neogene deep - sea benthic foraminifera from the Blake Ridge, NW Atlantic Ocean. Journal of Micropaleontology, v. 30, p. 33-74
 * Bhaumik, A.K., Gupta, A.K., and Thomas, E., 2011. Paleoceanographic changes and gas hydrate destabilization in the Blake Outer Ridge, NW Atlantic during the late Neogene. Palaeogeography, Palaeoclimatology, Palaeoecology, v.302, p. 435-451.
 * Gupta, A.K., Mohan, K., Sarkar, S., Clemens, S.C., Ravindra, R. and Uttam, R.K., 2011. East –West similarities and differences in the surface and deep northern Arabian Sea records during the past 21 Kyrs. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 301, p. 75-85.
 * Singh, R.K. and Gupta, A.K.,, 2010. Deep-sea benthic foraminiferal changes in the eastern Indian Ocean (ODP Hole 757B): Their links to deep Indonesian (Pacific) flow and high latitude glaciation during the Neogene. Episodes, v. 33, p. 74-82.
 * Gupta, A.K.,, Sarkar, S., De, S., Clemens, S.C. and Velu, A., 2010. Mid-Brunhes Strengthening of the Indian Ocean Dipole caused increased equatorial East African and decreased Australasian rainfall. Geophysical Research Letters, 37, L06706, doi:10.1029/2009GL042225.
 * De, S. and Gupta, A.K.,, 2010. Deep-sea faunal provinces and their inferred environments in the Indian Ocean based on distribution of recent benthic foraminifera. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 291, p. 429-442.
 * Anderson, D.M., Baulcomb, C.K., DuVivier, A.K., Gupta, A.K.,, 2010. Indian summer monsoon during the last two millennia. Journal of Quaternary Science, DOI: 10.1002/jqs.1369.
 * Hayward, B.W., Sabaa, A.T., Thomas, E., Kawagata, S., Nomura, R., Schröder-Adams, C., Gupta, A.K.,, and Johnson, K., 2010. Cenozoic Record of elongate, cylindrical, deep-sea benthic foraminifera in the Indian Ocean (ODP Sites 722, 738, 744, 758 and 763). Journal of Foraminiferal Research, v. 40, p. 113-133.
 * Sarkar, S., De, S., and Gupta, A.K.,, 2009. Late Quaternary benthic foraminifera from Ocean Drilling Program Hole 716A, Maldives Ridge, southeastern Arabian Sea. Micropaleontology, v. 55, no. 1, p. 23-48.
 * Karas, C., Nürnberg, D., Gupta, A.K.,, Tiedemann, Ralf, Mohan, K., and Bickert, T., 2009. Mid-Pliocenc climate change amplified by a switch in Indonesian subsurface throughflow. Nature Geoscience, v. 2, no. 6, p. 434-438.
 * Gupta, A. K., Das, M., Clemens, S. C. and Mukherjee, B., 2008. Benthic foraminiferal faunal and isotopic changes as recorded in Holocene sediments of the northwest Indian Ocean. Paleoceanography, v. 23, PA2214, doi:10.1029/2007PA001546.
 * Gupta, A.K.,,Sundar Raj, M., Mohan K., and De, S., 2008. A major change in monsoon-driven productivity in the tropical Indian Ocean during ca 1.2-0.9 Myr: Foraminiferal faunal and stable isotope data. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 261, p. 234-245.
 * Sarkar, S. and Gupta A.K., 2008. Five new species of benthic foraminifera from upper Pleistocene sequence in ODP Hole 716A, Maldives Ridge, equatorial Indian Ocean. Micropaleontology, v. 54, p. 176-184.
 * Gupta, A.K.,, Sarkar, S., and Mukherjee, B., 2006. Deep-sea paleoceanographic changes at DSDP Site 238, Central Indian Ocean Basin during the past 1.9 Myr: Benthic foraminiferal proxies. Marine Micropaleontology, v. 60, p. 157-166.
 * Kawagata, S., Hayward, B.W., and Gupta, A.K.,, 2006. Benthic foraminiferal extinctions linked to late Pliocene-Pleistocene deep-sea circulation changes in the northern Indian Ocean (ODP Sites 722 and 758). Marine Micropaleontology, v. 58, p. 219-242.
 * Gupta, A.K.,, Das, M., and Bhaskar, K., 2006. South Equatorial Current (SEC) driven changes at DSDP Site 237, Central Indian Ocean during the Plio-Pleistocene: Benthic foraminiferal faunal and isotope data. Journal of Asian Earth Sciences, v. 28, p. 276-290.
 * Singh, R.K. and Gupta, A.K.,, 2005. Systematic decline in benthic foraminiferal species diversity linked to productivity increases over the last 26 Ma in the Indian Ocean. Journal of Foraminiferal Research, v. 35, no. 3, p. 219-227.
 * Gupta, A.K.,, Das, M., and Anderson, D.M., 2005. Solar Influence on the Indian summer monsoon during the Holocene. Geophysical Research Letters, v. 32, L17703, doi:10.1029/2005 GL022685.
 * Pandey, D.N., Chaubey, A.C., Gupta, A.K.,, and Vardhan, H., 2005. Mine Spoil Restoration: A Strategy Combining Rainwater Harvesting and Adaptation to Random Recurrence of Droughts in Rajasthan. International Forestry Review, v. 7, p. 241-249.
 * Singh, R.K. and Gupta, A.K.,, 2004. Late Oligocene-Miocene evolution of the southeastern Indian Ocean: Results from deep-sea Benthic foraminifera (ODP Site 757). Marine Micropaleontology, v. 51, p. 153-170.
 * Gupta, A.K.,, Singh, R.K., Thomas, E. and Joseph, S., 2004. Indian Ocean high-productivity Event (10-8 Ma): Linked to Global Cooling or to the Initiation of the Indian Monsoons? Geology, v. 32, p. 753-756.
 * Gupta, A.K., and Thomas, E., 2003. Initiation of Northern Hemisphere Glaciation and strengthening of the northeast Indian Monsoon: Ocean Drilling Program Site 758, eastern equatorial Indian Ocean. Geology, v. 31, p. 47-50.
 * Gupta, A.K.,, Anderson, D.M., and Overpeck, J.T., 2003. Abrupt Changes in the Holocene Asian southwest monsoon and their links to the North Atlantic Ocean. Nature, v. 421, p. 354-357.
 * Gupta, A.K.,, Joseph, S., and Thomas, E., 2001. Species Diversity of Miocene deep-sea benthic foraminifera and watermass stratification in the northeastern Indian Ocean. Micropaleontology, v. 47, p. 111-124.
 * Gupta, A.K.,,Dhingra, H., Melice, J.-C., and Anderson, D.M., 2001. Earth’s eccentricity cycles and Indian Summer Monsoon variability over the past 2 million years: Evidence from deep-sea benthic foraminifer. Geophysical Research Letters, v. 28, p. 4131-4134.
 * Joseph, S., and Gupta, A.K.,, 1999. New species of benthic foraminifera from ODP Sites 757B and 758A, northeastern Indian Ocean. Micropaleontology, v. 45, p. 221-224
 * Gupta, A.K.,, 1999. Latest Pliocene through Holocene paleoceanography of the eastern Indian Ocean: benthic foraminiferal evidence. Marine Geology. v. 161, p. 63-73.
 * Gupta, A.K.,, and Thomas, E., 1999. Latest Miocene-Pleistocene productivity and deep-sea ventilation in the northwestern Indian Ocean (Deep Sea Drilling Project Site 219). Paleoceanography, v. 13, p. 62-73.
 * Gupta, A.K.,, 1997. Paleoceanographic and Paleoclimatic history of the Somali Basin during the Pliocene-Pleistocene: Multivariate analyses of Benthic Foraminifera from DSDP site 241 (Leg 25). Journal of Foraminiferal Research, v. 27, p. 196-208.
 * Gupta, A.K.,, 1994. Taxonomy and bathymetric distribution of Holocene deep-sea benthic foraminifera in the Indian Ocean and the Red Sea. Micropaleontology, v. 40, p. 351-367.
 * Gupta, A.K.,, 1993. Biostratigraphic vs. paleoceanographic importance of Stilostomellalepidula (Schwager) in the Indian Ocean. Micropaleontology, v. 39, p.47-51.
 * Gupta, A.K., and SenGupta,B.K., 1993. Heronallenellaboltovskoyi and Planulinoidessrinivasani, new species of benthic foraminifera from the Indian Ocean. Journal of Paleontology, v. 67, p.902-905.
 * Gupta, A.K., and Srinivasan, M.S., 1992. Uvigerinaproboscidea abundances and paleoceanography of the northern Indian Ocean DSDP site 214 during the Late Neogene. Marine Micropaleontology, v. 19, p.355-367.
 * Gupta, A.K., and Srinivasan, M.S., 1990. Response of northern Indian Ocean deep-sea benthic foraminifera to global climates during Pliocene-Pleistocene. Marine Micropaleontology, v. 16, p. 77-91.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.
 * Karas, C., Nürnberg, D., Gupta, A.K.,, Tiedemann, Ralf, Mohan, K., and Bickert, T., 2009. Mid-Pliocenc climate change amplified by a switch in Indonesian subsurface throughflow. Nature Geoscience, v. 2, no. 6, p. 434-438.
 * Gupta, A. K., Das, M., Clemens, S. C. and Mukherjee, B., 2008. Benthic foraminiferal faunal and isotopic changes as recorded in Holocene sediments of the northwest Indian Ocean. Paleoceanography, v. 23, PA2214, doi:10.1029/2007PA001546.
 * Gupta, A.K.,,Sundar Raj, M., Mohan K., and De, S., 2008. A major change in monsoon-driven productivity in the tropical Indian Ocean during ca 1.2-0.9 Myr: Foraminiferal faunal and stable isotope data. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 261, p. 234-245.
 * Sarkar, S. and Gupta A.K., 2008. Five new species of benthic foraminifera from upper Pleistocene sequence in ODP Hole 716A, Maldives Ridge, equatorial Indian Ocean. Micropaleontology, v. 54, p. 176-184.
 * Gupta, A.K.,, Sarkar, S., and Mukherjee, B., 2006. Deep-sea paleoceanographic changes at DSDP Site 238, Central Indian Ocean Basin during the past 1.9 Myr: Benthic foraminiferal proxies. Marine Micropaleontology, v. 60, p. 157-166.
 * Kawagata, S., Hayward, B.W., and Gupta, A.K.,, 2006. Benthic foraminiferal extinctions linked to late Pliocene-Pleistocene deep-sea circulation changes in the northern Indian Ocean (ODP Sites 722 and 758). Marine Micropaleontology, v. 58, p. 219-242.
 * Gupta, A.K.,, Das, M., and Bhaskar, K., 2006. South Equatorial Current (SEC) driven changes at DSDP Site 237, Central Indian Ocean during the Plio-Pleistocene: Benthic foraminiferal faunal and isotope data. Journal of Asian Earth Sciences, v. 28, p. 276-290.
 * Singh, R.K. and Gupta, A.K.,, 2005. Systematic decline in benthic foraminiferal species diversity linked to productivity increases over the last 26 Ma in the Indian Ocean. Journal of Foraminiferal Research, v. 35, no. 3, p. 219-227.
 * Gupta, A.K.,, Das, M., and Anderson, D.M., 2005. Solar Influence on the Indian summer monsoon during the Holocene. Geophysical Research Letters, v. 32, L17703, doi:10.1029/2005 GL022685.
 * Pandey, D.N., Chaubey, A.C., Gupta, A.K.,, and Vardhan, H., 2005. Mine Spoil Restoration: A Strategy Combining Rainwater Harvesting and Adaptation to Random Recurrence of Droughts in Rajasthan. International Forestry Review, v. 7, p. 241-249.
 * Singh, R.K. and Gupta, A.K.,, 2004. Late Oligocene-Miocene evolution of the southeastern Indian Ocean: Results from deep-sea Benthic foraminifera (ODP Site 757). Marine Micropaleontology, v. 51, p. 153-170.
 * Gupta, A.K.,, Singh, R.K., Thomas, E. and Joseph, S., 2004. Indian Ocean high-productivity Event (10-8 Ma): Linked to Global Cooling or to the Initiation of the Indian Monsoons? Geology, v. 32, p. 753-756.
 * Gupta, A.K., and Thomas, E., 2003. Initiation of Northern Hemisphere Glaciation and strengthening of the northeast Indian Monsoon: Ocean Drilling Program Site 758, eastern equatorial Indian Ocean. Geology, v. 31, p. 47-50.
 * Gupta, A.K.,, Anderson, D.M., and Overpeck, J.T., 2003. Abrupt Changes in the Holocene Asian southwest monsoon and their links to the North Atlantic Ocean. Nature, v. 421, p. 354-357.
 * Gupta, A.K.,, Joseph, S., and Thomas, E., 2001. Species Diversity of Miocene deep-sea benthic foraminifera and watermass stratification in the northeastern Indian Ocean. Micropaleontology, v. 47, p. 111-124.
 * Gupta, A.K.,,Dhingra, H., Melice, J.-C., and Anderson, D.M., 2001. Earth’s eccentricity cycles and Indian Summer Monsoon variability over the past 2 million years: Evidence from deep-sea benthic foraminifer. Geophysical Research Letters, v. 28, p. 4131-4134.
 * Joseph, S., and Gupta, A.K.,, 1999. New species of benthic foraminifera from ODP Sites 757B and 758A, northeastern Indian Ocean. Micropaleontology, v. 45, p. 221-224
 * Gupta, A.K.,, 1999. Latest Pliocene through Holocene paleoceanography of the eastern Indian Ocean: benthic foraminiferal evidence. Marine Geology. v. 161, p. 63-73.
 * Gupta, A.K.,, and Thomas, E., 1999. Latest Miocene-Pleistocene productivity and deep-sea ventilation in the northwestern Indian Ocean (Deep Sea Drilling Project Site 219). Paleoceanography, v. 13, p. 62-73.
 * Gupta, A.K.,, 1997. Paleoceanographic and Paleoclimatic history of the Somali Basin during the Pliocene-Pleistocene: Multivariate analyses of Benthic Foraminifera from DSDP site 241 (Leg 25). Journal of Foraminiferal Research, v. 27, p. 196-208.
 * Gupta, A.K.,, 1994. Taxonomy and bathymetric distribution of Holocene deep-sea benthic foraminifera in the Indian Ocean and the Red Sea. Micropaleontology, v. 40, p. 351-367.
 * Gupta, A.K.,, 1993. Biostratigraphic vs. paleoceanographic importance of Stilostomellalepidula (Schwager) in the Indian Ocean. Micropaleontology, v. 39, p.47-51.
 * Gupta, A.K., and SenGupta,B.K., 1993. Heronallenellaboltovskoyi and Planulinoidessrinivasani, new species of benthic foraminifera from the Indian Ocean. Journal of Paleontology, v. 67, p.902-905.
 * Gupta, A.K., and Srinivasan, M.S., 1992. Uvigerinaproboscidea abundances and paleoceanography of the northern Indian Ocean DSDP site 214 during the Late Neogene. Marine Micropaleontology, v. 19, p.355-367.
 * Gupta, A.K., and Srinivasan, M.S., 1990. Response of northern Indian Ocean deep-sea benthic foraminifera to global climates during Pliocene-Pleistocene. Marine Micropaleontology, v. 16, p. 77-91.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.
 * Gupta, A.K.,, Joseph, S., and Thomas, E., 2001. Species Diversity of Miocene deep-sea benthic foraminifera and watermass stratification in the northeastern Indian Ocean. Micropaleontology, v. 47, p. 111-124.
 * Gupta, A.K.,,Dhingra, H., Melice, J.-C., and Anderson, D.M., 2001. Earth’s eccentricity cycles and Indian Summer Monsoon variability over the past 2 million years: Evidence from deep-sea benthic foraminifer. Geophysical Research Letters, v. 28, p. 4131-4134.
 * Joseph, S., and Gupta, A.K.,, 1999. New species of benthic foraminifera from ODP Sites 757B and 758A, northeastern Indian Ocean. Micropaleontology, v. 45, p. 221-224
 * Gupta, A.K.,, 1999. Latest Pliocene through Holocene paleoceanography of the eastern Indian Ocean: benthic foraminiferal evidence. Marine Geology. v. 161, p. 63-73.
 * Gupta, A.K.,, and Thomas, E., 1999. Latest Miocene-Pleistocene productivity and deep-sea ventilation in the northwestern Indian Ocean (Deep Sea Drilling Project Site 219). Paleoceanography, v. 13, p. 62-73.
 * Gupta, A.K.,, 1997. Paleoceanographic and Paleoclimatic history of the Somali Basin during the Pliocene-Pleistocene: Multivariate analyses of Benthic Foraminifera from DSDP site 241 (Leg 25). Journal of Foraminiferal Research, v. 27, p. 196-208.
 * Gupta, A.K.,, 1994. Taxonomy and bathymetric distribution of Holocene deep-sea benthic foraminifera in the Indian Ocean and the Red Sea. Micropaleontology, v. 40, p. 351-367.
 * Gupta, A.K.,, 1993. Biostratigraphic vs. paleoceanographic importance of Stilostomellalepidula (Schwager) in the Indian Ocean. Micropaleontology, v. 39, p.47-51.
 * Gupta, A.K., and SenGupta,B.K., 1993. Heronallenellaboltovskoyi and Planulinoidessrinivasani, new species of benthic foraminifera from the Indian Ocean. Journal of Paleontology, v. 67, p.902-905.
 * Gupta, A.K., and Srinivasan, M.S., 1992. Uvigerinaproboscidea abundances and paleoceanography of the northern Indian Ocean DSDP site 214 during the Late Neogene. Marine Micropaleontology, v. 19, p.355-367.
 * Gupta, A.K., and Srinivasan, M.S., 1990. Response of northern Indian Ocean deep-sea benthic foraminifera to global climates during Pliocene-Pleistocene. Marine Micropaleontology, v. 16, p. 77-91.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.
 * Gupta, A.K.,, 1994. Taxonomy and bathymetric distribution of Holocene deep-sea benthic foraminifera in the Indian Ocean and the Red Sea. Micropaleontology, v. 40, p. 351-367.
 * Gupta, A.K.,, 1993. Biostratigraphic vs. paleoceanographic importance of Stilostomellalepidula (Schwager) in the Indian Ocean. Micropaleontology, v. 39, p.47-51.
 * Gupta, A.K., and SenGupta,B.K., 1993. Heronallenellaboltovskoyi and Planulinoidessrinivasani, new species of benthic foraminifera from the Indian Ocean. Journal of Paleontology, v. 67, p.902-905.
 * Gupta, A.K., and Srinivasan, M.S., 1992. Uvigerinaproboscidea abundances and paleoceanography of the northern Indian Ocean DSDP site 214 during the Late Neogene. Marine Micropaleontology, v. 19, p.355-367.
 * Gupta, A.K., and Srinivasan, M.S., 1990. Response of northern Indian Ocean deep-sea benthic foraminifera to global climates during Pliocene-Pleistocene. Marine Micropaleontology, v. 16, p. 77-91.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.
 * Gupta, A.K., and Srinivasan, M.S., 1992. Uvigerinaproboscidea abundances and paleoceanography of the northern Indian Ocean DSDP site 214 during the Late Neogene. Marine Micropaleontology, v. 19, p.355-367.
 * Gupta, A.K., and Srinivasan, M.S., 1990. Response of northern Indian Ocean deep-sea benthic foraminifera to global climates during Pliocene-Pleistocene. Marine Micropaleontology, v. 16, p. 77-91.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.
 * Gupta, A.K., and Srinivasan, M.S., 1990. A new benthic foraminifer Favocassidulinaindica from the Indian Ocean. Micropaleontology, v. 36, p. 173-176.

Short Research Papers

 * Gupta, A.K.,, Anderson, D.M., and Overpeck, J.T., 2004. Abrupt changes in the Indian summer monsoon and their impact on climate and human societies in South Asia during the last 10,000 years. IPCC Expert Meeting on the Science to address UNFCCC Article 2 including Key Vulnerabilities, Buenos Aires, Argentina, May 18-20, 2004, Expert Meeting - Short Report, p. 50-51.

National Publications

 * Agrawal, S., Srivastava, P., Sonam, Meena, N.K., Rai, S. K., Bhushan, R., Misra, D.K., and A.K. Gupta, 2015. Stable (δ13C and δ15N) isotopes and Magnetic Susceptibility record of late Holocene climate change from a lake profile of the northeast Himalaya. Journal of the Geological Society of India, v. 86, p. 696-705.
 * Asthana, A.K.L., Gupta, A.K., Luirei, K., Bartarya, S.K., Rai, S.K., Tiwari, S.K., 2015. A Quantitative Analysis of the Ramganga Drainage Basin and Structural control on drainage pattern in the fault zones, Uttarakhand. Journal Geological Society of India, v. 86, p. 9-22.
 * Rai, S.K., Tiwari, S.K., Kharya, A., Negi, M., and Gupta, A.K., 2015. A Laser based fluorination (BrF5) system for the extraction of Oxygen (O2) from silicate rocks of Himalaya and δ18O measurements: method establishment and implications. MAPAN-Journal of Metrology Society of India, DOI 10.1007/s12647-015-0141-5, p. 221-230.
 * Rai, S.K., Tiwari, S.K., Bartarya, S.K., Gupta, A.K., 2015. Research on geothermal systems in the Northwest Himalaya. Current Science, v. 108, no. 9, p. 1597-1599.
 * Agrawal, S., Srivastava, P., Sonam, Meena, N.K., Rai, S. K., Bhushan, R., Misra, D.K., and A.K. Gupta, 2015. Stable (δ13C and δ15N) isotopes and Magnetic Susceptibility record of late Holocene climate change from a lake profile of the northeast Himalaya. Journal of the Geological Society of India, In press.
 * Khandelwal, D.D., Gupta, A.K., and Chauhan, V., 2015. Observations of rainfall in Garhwal Himalaya, India during 2008–2013 and its correlation with TRMM data. Current Science, v. 108, p. 1146-1151.
 * Tiwari, S.K., Singh, R.K., Singh, J., Gupta, A.K., Bartarya, S.K., Rai, S.K., 2015. Impact of limestone mining activities on major ion geochemistry of KremMarkhyrdop water, Meghalaya, India. Himalayan Geology, v. 36 (1), p. 74-80.
 * Singh, R.K. and Gupta, A.K., 2014. Miocene history of Indian monsoon: A review of marine records. Special Publication of the Palaeontological Society of India, no. 5 (28 February, 2014), p. 101-109.
 * Bhaumik, A.K., Gupta, A.K.,, Clemens, S.C., and Mazumder, R., 2014. Functional morphology of Melonisbarleeanum and Hoeglundinaelegans: a proxy for water-mass characteristics. Current Science, vol. 106, no. 8, p. 1133-1140.
 * Dobhal, D.P., Gupta, A.K.,, Mehta, M. and Khandelwal, D.D., 2013. Kedarnath disaster: facts and plausible causes. Current Science, v. 105, no. 2, 171-174.
 * Bhaumik, A.K., Gupta, A., Gupta, A.K.,, Kumar, S., Ray, S and Biswas, S., 2013. Gas hydrates occurrence, destabilization and potential energy resources: A review based on faunal, geochemical and geophysical investigations with special reference to the Blake Ridge, NW Atlantic. Journal of the Palaeontological Society of India, v. 58 (1), p. 39-50.
 * Gupta, A.K.,, Singh, R.K., Verma, S., 2013. Deep-sea palaeoceanographic evolution of the eastern Indian Ocean during the late Oligocene-Pleistocene: species diversity trends in benthic foraminifera. Current Science, v. 104, no. 7, p. 904-910.
 * Patnaik, R., Gupta, A.K.,, Naidu, P.D., Yadav, R.R., Bhattacharyya, A., and Kumar, M., 2012. Indian Monsoon variability at different Time Scales: Marine and Terrestrial Proxy Records. Proceedings of the Indian National Science Academy, v. 78, no. 3, pp. 535-547.
 * Bhaumik, A.K., Gupta, A.K.,,Dey, R. and Clemens, S.C., 2011. Stilostomella: extinction or local disappearance of elongated species? Current Science, v. 101, no. 7, p. 952-958.
 * Mohan, K. and Gupta, A.K.,, 2011. Intense deep convective mixing in the Southeast Arabian Sea linked to strengthening of the NE Indian monsoon during the middle Pliocene (3.4 Ma). Current Science, v. 101, no. 4, p. 543-548.
 * Gupta, A.K.,, 2011. Paleoceanographic evolution of the Indian Ocean during the Neogene. Journal Indian Geological Congress, v. 3 (1), p. 73-85. (Presented as the 4th Prof. P.B. Verma Memorial Lecture of the IGC on April 7, 2011 at Lucknow).
 * Gupta, A.K.,, 2010. Evolution of the Indian monsoon since late Miocene intensification – Marine and land proxy records. Journal of the Palaeontological Society of India, v 55, p. 1-9.
 * Sarkar, S. and Gupta, A.K.,, 2009. Deep-sea paleoceanography of the Maldives Islands (ODP Hole 716A), equatorial Indian Ocean during MIS 12 – 6. Journal of Biosciences, v. 34, p. 749-764.
 * Gupta A.K., Pandey, D.N. and Anderson, D.M., 2009. Monsoon failures and rainwater harvesting. Geography and You, July-August issue, p. 28-32.
 * Bhaumik, A.K., Gupta, A.K.,, Mohan, K., and Singh, R.K., 2008. Disappearance of Stilostomellalepidula (Schwager) across the mid-Pleistocene Transition and its paleoceanographic implication. Current Science, v. 94, p. 758-764.
 * Bhaumik, A.K., Gupta, A.K.,, M. Sundar Raj, Mohan, K., De, S., and and Sarkar, S., 2007. Paleoceanographic evolution of the southeastern Indian Ocean during the Miocene: Evidence from deep-sea benthic foraminifera (DSDP Hole 216A). Indian Journal of Marine Sciences, v. 36, p. 332-341.
 * Gupta, A.K., and Das, M., 2007. Occurrence of the Biogenic Bloom in the oligotrophic southeastern Indian Ocean: Evidence from the late Neogene deep-sea benthic foraminifera (ODP Hole 752A). Journal Geological Society of India, v. 69, p. 331-343
 * Bhaumik, A.K. and Gupta, A.K.,, 2007. Evidence of methane release from Blake Ridge ODP Hole 997A during the Plio-Pleistocene: Benthic foraminifer fauna and total organic carbon. Current Science, v. 92, p. 192-199.
 * Gupta, A.K.,, Anderson, D.M., Pandey, D.N., and Singhvi, A.K., 2006. Adaptation and human migration, and evidence of agriculture coincident with changes in the Indian summer monsoon during the Holocene. Current Science, v. 90, p. 1082-1090.
 * Das, M., Gupta, A.K.,, and Anderson, D.M., 2006. Deep-Sea paleoceanographic and surface productivity changes in the Northwestern Arabian Sea driven by the Indian Southwest monsoon during the Last Millennium. Journal of The Geological Society of India, v. 68, no. 3, p. 387-394.
 * Gupta, A.K., and Anderson, D.M., 2005. Mysteries of the Indian Ocean monsoon system. Journal Geological Society of India, v. 65, p. 54-60.
 * Bhaumik, A.K. and Gupta, A.K.,, 2005. Deep-Sea Benthic Foraminifera from Gas Hydrate- rich zone, Blake Ridge, Northwest Atlantic (ODP Hole 997A). Current Science, v. 88, p. 1969-1973.
 * Gupta, A.K., and Dhingra, H., 2004. Middle Pleistocene Transition (MPT) in the Eastern Indian Ocean: A 2000 kyrPlanktic Faunal and Isotope Record from DSDP Site 214. Journal Geological Society of India, v. 63, no. 1, p. 29-38.
 * Gupta, A.K.,, 2004. Marine gas hydrates: their economic and environmental importance. Current Science, v. 86, no.9, p.1198-1199.
 * Gupta, A.K.,, 2004. Origin of agriculture and domestication of plants and animals linked to early Holocene climate amelioration. Current Science, v. 87, p. 54-59.
 * Singh, R.K., Gupta, A.K., and Das, M., 2004. Monsoon avamiskaBhartiyaUpmahadweep par prabhav. Samudrika, GSI publication, v. 11, p. 14-18.
 * Pandey, D.N., Gupta, A.K., and Anderson, D.M., 2003. Rainwater harvesting as an adaptation to climate change. Current Science, v. 85, no. 1, p. 46-59.
 * Gupta, A.K., and Melice, J.-L., 2003. Orbital forcing of the Plio-Pleistocene Indian monsoons: benthic foraminiferal proxies from ODP Site 758. Current Science, v. 85, no. 2, p. 179-184.
 * Anderson, D.M, Overpeck, J.T., and Gupta, A.K.,, 2002. Increase in the Asian Southwest Monsoon During the Past Four Centuries. Science, v. 297, 5581, 596-599.
 * Gupta A.K., Pandey, D.N. and Anderson, D.M., 2009. Monsoon failures and rainwater harvesting. Geography and You, July-August issue, p. 28-32.
 * Bhaumik, A.K., Gupta, A.K.,, Mohan, K., and Singh, R.K., 2008. Disappearance of Stilostomellalepidula (Schwager) across the mid-Pleistocene Transition and its paleoceanographic implication. Current Science, v. 94, p. 758-764.
 * Bhaumik, A.K., Gupta, A.K.,, M. Sundar Raj, Mohan, K., De, S., and and Sarkar, S., 2007. Paleoceanographic evolution of the southeastern Indian Ocean during the Miocene: Evidence from deep-sea benthic foraminifera (DSDP Hole 216A). Indian Journal of Marine Sciences, v. 36, p. 332-341.
 * Gupta, A.K., and Das, M., 2007. Occurrence of the Biogenic Bloom in the oligotrophic southeastern Indian Ocean: Evidence from the late Neogene deep-sea benthic foraminifera (ODP Hole 752A). Journal Geological Society of India, v. 69, p. 331-343
 * Bhaumik, A.K. and Gupta, A.K.,, 2007. Evidence of methane release from Blake Ridge ODP Hole 997A during the Plio-Pleistocene: Benthic foraminifer fauna and total organic carbon. Current Science, v. 92, p. 192-199.
 * Gupta, A.K.,, Anderson, D.M., Pandey, D.N., and Singhvi, A.K., 2006. Adaptation and human migration, and evidence of agriculture coincident with changes in the Indian summer monsoon during the Holocene. Current Science, v. 90, p. 1082-1090.
 * Das, M., Gupta, A.K.,, and Anderson, D.M., 2006. Deep-Sea paleoceanographic and surface productivity changes in the Northwestern Arabian Sea driven by the Indian Southwest monsoon during the Last Millennium. Journal of The Geological Society of India, v. 68, no. 3, p. 387-394.
 * Gupta, A.K., and Anderson, D.M., 2005. Mysteries of the Indian Ocean monsoon system. Journal Geological Society of India, v. 65, p. 54-60.
 * Bhaumik, A.K. and Gupta, A.K.,, 2005. Deep-Sea Benthic Foraminifera from Gas Hydrate- rich zone, Blake Ridge, Northwest Atlantic (ODP Hole 997A). Current Science, v. 88, p. 1969-1973.
 * Gupta, A.K., and Dhingra, H., 2004. Middle Pleistocene Transition (MPT) in the Eastern Indian Ocean: A 2000 kyrPlanktic Faunal and Isotope Record from DSDP Site 214. Journal Geological Society of India, v. 63, no. 1, p. 29-38.
 * Gupta, A.K.,, 2004. Marine gas hydrates: their economic and environmental importance. Current Science, v. 86, no.9, p.1198-1199.
 * Gupta, A.K.,, 2004. Origin of agriculture and domestication of plants and animals linked to early Holocene climate amelioration. Current Science, v. 87, p. 54-59.
 * Singh, R.K., Gupta, A.K., and Das, M., 2004. Monsoon avamiskaBhartiyaUpmahadweep par prabhav. Samudrika, GSI publication, v. 11, p. 14-18.
 * Pandey, D.N., Gupta, A.K., and Anderson, D.M., 2003. Rainwater harvesting as an adaptation to climate change. Current Science, v. 85, no. 1, p. 46-59.
 * Gupta, A.K., and Melice, J.-L., 2003. Orbital forcing of the Plio-Pleistocene Indian monsoons: benthic foraminiferal proxies from ODP Site 758. Current Science, v. 85, no. 2, p. 179-184.
 * Anderson, D.M, Overpeck, J.T., and Gupta, A.K.,, 2002. Increase in the Asian Southwest Monsoon During the Past Four Centuries. Science, v. 297, 5581, 596-599.
 * Gupta, A.K., and Dhingra, H., 2004. Middle Pleistocene Transition (MPT) in the Eastern Indian Ocean: A 2000 kyrPlanktic Faunal and Isotope Record from DSDP Site 214. Journal Geological Society of India, v. 63, no. 1, p. 29-38.
 * Gupta, A.K.,, 2004. Marine gas hydrates: their economic and environmental importance. Current Science, v. 86, no.9, p.1198-1199.
 * Gupta, A.K.,, 2004. Origin of agriculture and domestication of plants and animals linked to early Holocene climate amelioration. Current Science, v. 87, p. 54-59.
 * Singh, R.K., Gupta, A.K., and Das, M., 2004. Monsoon avamiskaBhartiyaUpmahadweep par prabhav. Samudrika, GSI publication, v. 11, p. 14-18.
 * Pandey, D.N., Gupta, A.K., and Anderson, D.M., 2003. Rainwater harvesting as an adaptation to climate change. Current Science, v. 85, no. 1, p. 46-59.
 * Gupta, A.K., and Melice, J.-L., 2003. Orbital forcing of the Plio-Pleistocene Indian monsoons: benthic foraminiferal proxies from ODP Site 758. Current Science, v. 85, no. 2, p. 179-184.
 * Anderson, D.M, Overpeck, J.T., and Gupta, A.K.,, 2002. Increase in the Asian Southwest Monsoon During the Past Four Centuries. Science, v. 297, 5581, 596-599.
 * Singh, R.K., Gupta, A.K., and Das, M., 2004. Monsoon avamiskaBhartiyaUpmahadweep par prabhav. Samudrika, GSI publication, v. 11, p. 14-18.
 * Pandey, D.N., Gupta, A.K., and Anderson, D.M., 2003. Rainwater harvesting as an adaptation to climate change. Current Science, v. 85, no. 1, p. 46-59.
 * Gupta, A.K., and Melice, J.-L., 2003. Orbital forcing of the Plio-Pleistocene Indian monsoons: benthic foraminiferal proxies from ODP Site 758. Current Science, v. 85, no. 2, p. 179-184.
 * Anderson, D.M, Overpeck, J.T., and Gupta, A.K.,, 2002. Increase in the Asian Southwest Monsoon During the Past Four Centuries. Science, v. 297, 5581, 596-599.
 * Gupta, A.K., and Melice, J.-L., 2003. Orbital forcing of the Plio-Pleistocene Indian monsoons: benthic foraminiferal proxies from ODP Site 758. Current Science, v. 85, no. 2, p. 179-184.
 * Anderson, D.M, Overpeck, J.T., and Gupta, A.K.,, 2002. Increase in the Asian Southwest Monsoon During the Past Four Centuries. Science, v. 297, 5581, 596-599.
 * Anderson, D.M, Overpeck, J.T., and Gupta, A.K.,, 2002. Increase in the Asian Southwest Monsoon During the Past Four Centuries. Science, v. 297, 5581, 596-599.


 * Das, M., Gupta, A.K.,, Singh, R.K. and Bhaumik, A.K., 2002. Significance of stable isotopes in Paleoclimatology and Paleoceanography – A Review. Indian Journal of Geochemistry, v. 17, p. 13-23.


 * Gupta, A.K.,, Ahmad, S.M., Dayal, A.M., and Gopalan, K, 2000. Is Strontium Isotope record a strict proxy for chemical weathering rates during the late Miocene (Ocean Drilling Program Site 758A)? Current Science, v. 79, p. 899-902.


 * Gupta, A.K.,, and Satapathy, S.K., 2000. Latest Miocene-Pleistocene abyssal benthic foraminifera from west-central Indian Ocean DSDP Site 236: Paleoceanographic and Paleoclimatic inferences. Journal of the Paleontological Society of India, v. 45, p. 33-48.


 * Gupta, A.K.,, 2000. Oxygen and Carbon Isotope values of Holocene Planktic and Benthic Foraminifera from the Indian Ocean DSDP Sites. Indian Journal of Petroleum Geology, v. 9, p. 71-84.
 * Gupta, A.K.,, Roy, A., Naik, P. and Chatterji, S., 1995. Pliocene-Pleistocene benthic foraminifera and abyssal circulation changes at Arabian Sea DSDP sites 220 and 223. Jour. Geol. Soc. India, v. 45, p.209-216.
 * Gupta, A.K.,, 1995. Quantitative analyses of Holocene Deep-sea benthic foraminifera from the Indian Ocean. Indian Journal of Petroleum Geology, v. 4, p.87-98.


 * Gupta, A.K.,, 1994. Holocene deep-sea benthic foraminifera and water masses in the Indian Ocean and the Red Sea. Jour. Geol. Soc. India, v.43, p.691-703.


 * Srinivasan, M.S., Rai, A.K. and Gupta, A.K.,, 1993. Neogene benthic foraminiferal biostratigraphy of the Indian Ocean deep sea sequences. Ind. Jour. Geol., v. 65, p. 246-255.
 * Gupta, A.K.,,1992. Benthic foraminifera and deep-sea water masses in the tropical Indian Ocean. Jour. Geol. Soc. India, v.39, p.475-486.
 * Gupta, A.K., and Srinivasan, M.S., 1992. Deep-sea benthic foraminiferal changes and Terminal Miocene Event at tropical Indian Ocean DSDP site 214. Jour. Geol. Soc. India, v. 40, p. 262-278.
 * Gupta, A.K.,, 1991. Pleistocene benthic foraminifera and deep-sea environments at northern Indian Ocean DSDP site 219. Journal Geological Society of India, v. 37, p. 388-406.
 * Gupta, A.K.,, 1990. Species diversity trends in Modern deep-sea benthic foraminifera at Indian Ocean DSDP sites. Indian Journal of Geology, v. 62, p.166-172.
 * Gupta, A.K., and Srinivasan, M.S., 1990. Quaternary bottom water circulation and benthic foraminiferal changes in the northern Indian Ocean. Indian Journal of Geology, v. 62, p.102-116.
 * Srinivasan, M.S. and Gupta, A.K.,, 1990. Miocene benthic foraminifera and paleoceanography of DSDP sites along the Ninetyeast Ridge, northern Indian Ocean. Journal of the Palaeontological Society of India, v. 35, p.61-72.


 * Gupta, A.K., and Srinivasan, M.S., 1989. Benthic foraminiferal changes across the Oligocene-Miocene boundary at DSDP site 217. Indian Journal of Geology, v. 61, p.148-158.