

Research Interests/SpecializationVolcanics, Geochemistry & Isotope Chemistry, Sedimentology
Date of Joining CSIR : 2015-03-05
Date of Joining Present Post : 2022-03-05
Date of Retirement : 2043-06-30
Work Domain Scientific
Area of WorkIgneous Petrology and Geochemistry, Ocean Crust formation
Number of Ph.D. students supervised (Ongoing & Completed): 4
No of student(s) trained through Internship/Project Work/Dissertation :10
Reviewer:
Gondwana Research, Lithos, Precambrian Research, Geological Magazine, Geoscience Frontiers, Journal of Asian Earth Sciences, Canadian Journal of Earth Sciences, Geological Journal,Journal of Earth System Sciences, Journal of Applied Geochemistry and others.
Cruise Experiences:
• Participated in two different expeditions in Bay of Bengal
• Participated in IODP-345 expedition in Pacific Ocean
• Participated as Chief Scientist in SSD-048 and SSD-071 expeditions in Central Indian Ocean
• Total more than 200 days onboard experiences
Presentations:
Presented several number of papers in International and National seminars and symposiums
Abroad Academic Visit:
Thailand, Singapore, USA, Costa Rica and Panama
Project involved:
a. Principal Investigator: Polymetallic nodules (Survey and Exploration) (PMN-S&E), Ministry of Earth Sciences, New Delhi (Ongoing)
b. Principal Investigator: Project titled “Geochemical studies of volcanic rocks from Andaman arc-back arc system: Implications on geodynamic evolution of Andaman basin”, SERB, Department of Science & Technology, since 2019 (Ongoing)
c. Co-Principal Investigator: Tectonic and magmatic processes along the slow-spreading mid-oceanic ridges and subduction zone in the Indian Ocean (TeaM-RiSe), CSIR, since 2020 (ongoing)
d. Principal Investigator: INSA-DST Inspire Faculty Project (2014-2019), DST, New Delhi (Completed)
e. Principal Investigator: CSIR-Senior Research Fellow Project (2010-2012), CSIR, New Delhi (Completed)
f. Principal Investigator: CSIR- Research Associate Project (2013-2014), CSIR, New Delhi (Completed)
Publications:
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Saha, A. , Hazra, A., Santosh, M., Ganguly, S., Li, S.S. and Manikyamba C. 2021. Episodic recycling of ancient metasomatized continental lithosphere: Evidence from lower oceanic crust of the Central Indian Ridge. Lithos (Accepted)
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Hazra, A., Saha, A., Verencar, A., Satyanarayanan, M., Ganguly, S. and Mahender, K. 2021. Refertilization of mantle peridotites from the Central Indian Ridge: Response to a geodynamic transition. Lithosphere. https://doi.org/10.2113/2021/9706924
Student First author -
Verencar, A., Saha, A., Ganguly, S. and Manikyamba, C. 2021. Tectono-magmatic evolution of Tethyan oceanic lithosphere in supra subduction zone forearc regime: Geochemical fingerprints from crust-mantle sections of Naga Hills Ophiolite, Geoscience Frontiers, v. 12,101096
Student First author -
Sensarma, S., Saha, A. and Hazra, A. 2021. Implications of REE incorporation and sediment influence on the origin and growth of ferromanganese nodules from Central Indian Ocean Basin. Geoscience Frontiers, v. 12,101123
Student First author -
Saha A., 2021. Geochemical Heterogeneity of Indian Ocean MOR Mantle. Journal of the Geological Society of India, DOI: 10.1007/s12594-021-1702-6
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Manikyamba, C., Ganguly, S., ..... and Saha, A. 2021. Tectonic juxtaposition of plume and subduction derived magmatic sequences in the Bababudan greenstone terrane, western Dharwar Craton, India: Constraining crustal accretion processes in a Neoarchean subduction-collision orogeny. Precambrian Research, v. 355, 106097.
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Saha A., Sensarma S., Hazra, A., Ganguly, S., Peketi, A., Doley, B. and Mudholkar, A.V., 2020. Imprints of ancient…Northwest Indian Ocean. Gondwana Research, v. 86, pp.60-82
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Saha A., Mudholkar, A. V., Kamesh Raju and K. A.,2020. Magma genesis…. slab-mantle interaction. Episode, v.43, pp.323-334
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Saha A., D’Mello, N.G., Sensarma, S., Mudholkar, A. V., Kamesh Raju, K. A., and Doley, B.,2019 Geochemical characteristics …..north-eastern Indian Ocean, Geological Journal, https://doi.org/10.1002/gj.3506
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Saha A., Santosh,M., Ganguly, S., Manikyamba, C., Ray J. and Dutta, J., 2018 Geochemical cycling.....mantle wedge. Geoscience Frontiers, v.9, 2018, pp. 1755-1775
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Saha, A., Mudholkar, A. V., Kamesh Raju, K. A., Doley, B., and Sensarma, S., 2018. Geochemical characteristics … back-arc spreading centres. Geological Journal, https://doi.org/10.1002/gj.3345
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Ghose, N.C. and Saha, A., 2018. Vestiges of older greenstone … rifted cratonic margin. Geological Journal, https://doi.org/10.1002/g j.3271.
Corresponding author -
Saha A., Ganguly S., Ray J., Koeberl C., Thoni M., Sarbajna C., Sawant S.S., 2017. Petrogenetic evolution …. lithospheric mantle. Gondwana Research v.48, 2017, pp. 237-256
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Saha A., Manikyamba C., Santosh M., Ganguly S., Khelen A.C. and Subramanyam K.S.V., 2015. Platinum Group Elements (PGE) geochemistry of…… mantle melting processes. Journal of Asian Earth Sciences, v.105, pp. 300-319
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Shen, X.M., Zhang, H.X.,Saha, A. and Ma,.L., 2017. Zircon U–Pb geochronology ….. late Paleozoic ophiolites. Geological Journal, v.53, pp. 1886-1905
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Manikyamba C., Said, N., Santosh M., Saha, A., Ganguly S., Khelen A.C. and Subramanyam K.S.V., 2018. U enrichment and Th/U fractionation in Archean boninites: ………juvenile subduction zones. Journal of Asian Earth Sciences, v. 157, pp.157-167
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Manikyamba C., ..Rambabu S., Li T., Saha A., Khelen A.C., Ganguly S., Singh D., Subba Rao D.V.,2016. Zircon U-Pb geochronology…….Neoarchean-Paleoproterozoic crustal growth. Gondwana Research v.38, pp. 313-333
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Ganguly S., Manikyamba C., Saha A., Lingadevaru M., Santosh M., Rambabu S., Khelen A.C., Purushotham D. and Linga D., 2015. Geochemical characteristics ………in diverse tectonic settings. Ore Geology Reviews, v. 73, pp.59-82
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Manikyamba C., Ray J., Ganguly S., Singh M. R., Santosh M., Saha, A., and Satyanarayanan M., 2015. Boninitic metavolcanic rocks …… Archean subduction processes. Precambrian Research v.271, pp. 138-159
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Singh M.R., Manikyamba C., Ray, J., Ganguly S., Santosh M., Saha A., Rambabu S. and Sawant S.S., 2015. Major, trace and platinum group element ……. sulphur saturation history. Ore Geology Reviews, v. 71, pp.1263-1289
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Manikyamba C., Ganguly S., Santosh M., Saha A., Chatterjee A. and Khelen A.C., 2015. Neoarchean arc-juvenile Kadiri greenstone belt. Precambrian Research, v.258, pp. 1-23.
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Manikyamba C., Ganguly S., Santosh M., Saha A. and Lakshminarayana G., 2014. Geochemistry and petrogenesis ……… Godavari Basin, India. Geoscience Frontiers, v.6, pp. 437-451.
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Hazra S., Ray J., Manikyamba C., Saha A. and Sawant, S.S., 2015. Geochemistry of PGE in mafic rocks ……NE India. Journal of Earth System Science, v. 124, pp. 459-475.
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Manikyamba C., Ganguly S., Santosh M., Singh M. R. and Saha A., 2014. Arc-nascent back arc
…………DharwarCraton, India. Geological Journal. v. 50,pp. 651-669. -
Manikyamba C., Saha A., Santosh M., Ganguly S., Singh M. R., Subba Rao D.V. and M. Lingadevaru, 2014. Neoarchean felsic …….. active continental margin. Precambrian Research, v. 252, pp. 1-21.
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Manikyamba C., Saha A., Ganguly S., Santosh M., Lingadevaru, M. and Singh M. R. 2014. Sediment- infill ………. an active continental margin. Journal of Asian Earth Sciences, v.96, pp.269-278.
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Gillis K.M., Snow J.E.,….,Saha, A. and Wintsch, R.P., 2014. Primitive Layered Gabbros from Fast- Spreading Lower Oceanic C rust. Nature, v.505 (7482), pp.204-207.
Equal contribution paper -
Manikyamba C., Ganguly S., Saha A., Santosh M., Singh M. R. and Subba Rao D.V., 2014. Continental lithospheric ……… Dharwar Craton, India. Journal of Asian Earth Sciences, v.95,pp.65-80.
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Ganguly S., Ray J., Koeberl C., Saha A., Thoni M. and Balaram V., 2014. Geochemistry and petrogenesis ……. Deccan Volcanic Province. Journal of Asian Earth Sciences, v. 91, pp. 174-193.
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Manikyamba C. and Saha A. 2014. PGE geochemistry Dharwar craton, India. Journal of Geological Society of India, Special Publication 2, pp. 162-174.
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Chaudhuri S., Ray J., Koeberl C., Thoni M., Dutta R., Saha A. and Banerjee M., 2014. Petrology and geochemistry ……. Northeastern India. Geological Journal, v. 49, pp.111-128.
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Gillis K.M., Snow J.E., ….,Saha A. and Wintsch, R.P., 2014. Exploring the plutonic crust at a fast- spreading ridge: new drilling at Hess Deep (Primliminary report). Proc. IODP volDOI:10.2204/iodp.pr.345.2014. Equal contribution paper
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Ray J., Saha A., Koeberl C., Thoni M., Ganguly S. and Hazra S., 2013. Geochemistry and Petrogenesis……..Northeastern India. Precambrian Research, v. 230, pp.119-137.
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Manikyamba C., Kerrich R., Polat A. and Saha A., 2013. Geochemistry of two..Archean mantle plumes. Lithos, v. 177, pp.120-135.
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Bhattacharyya N., Ray J., Ganguly S., and Saha A., 2012. Mineral Chemical Indian Shield. Journal of Geological Society of India, v.80, pp.481-492.
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Saha A., Ray J., Ganguly S., and Chatterjee N., 2011. Occurrence of Melanite Northeastern
India. Current Science, v. 101, pp. 95-100. -
Ray J., Saha A., Ganguly S., Balaram V., Keshav Krishna A. and Hazra S., 2011. Geochemistry and Petrogenesis ……….. Northeastern India. Journal of Earth System Science, v. 120, pp. 459-473.
Corresponding author -
Saha A., Ray J., Ganguly S., Koeberl C. and Thoni M., 2010. Tracking Kerguelen Plume Sr-Nd isotope systematics, Bulletin of Geological Society of America, v. 42, no. 5, p. 647.
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Saha A., Ganguly S., Ray J. and Chatterjee N., 2010. Evaluation of phase chemistry Northeastern India. Journal of Earth System Science, v. 119, pp. 675-699.
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Saha A., Ganguly S., Ray J. and Dhang A., 2010. Vanadium Bearing ……North Eastern India. Journal of Geological Society of India, v.76, pp.26-32.
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Saha A., Dhang A., Ray J., Chakraborty S. and Moecher D., 2010. Complete Preservation Journal of Earth System Science, v. 119, pp. 365-381.
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Hazra S., Ray J. and Saha A. 2008. Mineral-Chemical North Eastern India. Journal of Geological Society of India, v.72, pp.679-690.
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Maity B.K., Ray J., Chattopadhyay B., Sengupta S., Nandy S. and Saha A., 2008. Contrasting Petrological ….Mineral Chemistry. In Srivastava R. K., Ch. Sivaji and Chalapathi Rao N. V. (eds.), Indian Dykes (Narosa Publishers), pp.447-470.