Dr. Sourabh Bhattacharya

My research focuses on the intricate world of granite-affiliated metallogenic processes, which pave the path to the economic crustal enrichment of metals such as Cu, Au, W, Sn, U, and others. In particular, I explore the physico-chemical signals for metal (Au, Cu, W, Sn etc.) fertility through various stages of granite evolution and tie up these records with crustal evolution. The main thrust is addressing the factors that promote metal endowment through the course of melt extraction, its evolution and subsequent hydrothermal degassing of magma. I employ a spectrum of methodologies, including, but not limited to, petrological phase equilibria modelling, mineral-chemical analysis, fluid inclusion heating-freezing experiments, and stable isotope measurements.

RESEARCH, TEACHING, or OTHER INTERESTS

Economic Geology, Geochemistry and Petrology, Geology

Scopus Publications

Records of fluid-rock interactions in the Degana tungsten deposit, India: Inferences from mineral paragenesis, whole-rock and mineral chemistry, and fluid inclusions
Jitendra Kumar Roy and Sourabh Bhattacharya
Elsevier BV



Clue on ocean redox condition from trace element and rare earth element (REE) composition of iron formation and carbonate rocks from the late paleoproterozoic morar formation, Gwalior group, central India
Pritam P. PAUL, Partha Pratim CHAKRABORTY, Fumito SHIRAISHI, Kaushik DAS, Atsushi KAMEI, and Sourabh BHATTACHARYA
Japan Association of Mineralogical Sciences
Trace element and rare earth element (REE) composition of iron formation and carbonate rocks from the Morar Formation, Gwalior Group, central India provides valuable information on the redox condition of late Paleoproterozoic Ocean. Facies types of iron formation suggest deposition in various oceanic environments ranging from shoreface – beach to subtidal shelf settings, whereas carbonates belong to shallow and deep subtidal settings. La/Nd values between 0.57 and 25, MREE enrichment and small negative (0.69) to positive (1.46) Ce anomaly in iron formation suggest a strati fi ed character for the Gwalior Sea with development of shallow transitional redoxcline. Whereas deep sea is interpreted as near anoxic and ferruginous, the shallow sea was not very high in dissolved oxygen (DO 2 ) either. A suboxic to mild oxic shallow sea condition (DO 2 ≥ 0.2 µM) is interpreted allowing Mn (II) oxidation and Ce sequestration. Carbonates, however, do not register any geochemical signature of redoxcline possibly because of the depositional setting either close to or below the redoxcline.


Dissecting through the metallogenic potentials of precambrian granitoids: Case studies from the bastar and eastern dharwar cratons, india
Dinesh Pandit, Sourabh Bhattacharya, and Mruganka K. Panigrahi
Geological Society of London
Abstract The Malanjkhand granodiorite in the Bastar Craton hosts a major copper (+ molybdenum) deposit. It represents a Precambrian granite–ore system lacking in key morphological features of porphyry-type deposits but is comparable as a chemical package with a distinct mode of evolution of the magmatic-hydrothermal system. Mineral chemistry of biotite and apatite along with bulk geochemical data constrain critical parameters such as initial water and halogen contents of the magma. Evolution of the magmatic-hydrothermal fluid has been envisaged with available thermobarometric data. A quantitative ore genetic model in terms of efficiency of removal of metals and resultant mineralization in terms of quantity of metals has been attempted for the Malanjkhand deposit. The Eastern Dharwar Craton witnessed prolific granitic activities in multiple phases during the Late Archean and are spatially close to auriferous schist belts. Against a widely held view of a single metamorphogenic origin of metal and ore fluid, a granite–gold connection can be visualized for the auriferous schist belts of the Eastern Dharwar Craton through comparison of fluid characteristics in the granitoid and ore regimes and mineral chemical constraints. Although a quantitative genetic link between the granitoid and gold would need more data, a magmatic component of the ore fluid could be established based on the available information.


Origin of granodiorite hosted Neoarchaean orogenic gold ore deposits: Stable isotopic and geochemical constraints with example from the Dharwar craton, southern India
M. Kesarwani, S. Sarangi, R. Srinivasan, B.G. George, S.K Singh, S. Bhattacharya, and V.N. Vasudev
Elsevier BV



Volatiles associated with granitoid intrusives around orogenic gold deposits in Ramagiri and Penakacherla regions of Eastern Dharwar Craton, South India
Sourabh Bhattacharya and Mruganka K. Panigrahi
Springer Science and Business Media LLC



Isotope (C and O) composition of auriferous quartz carbonate veins, central lode system, Gadag Gold Field, Dharwar Craton, India: Implications to source of ore fluids
S.K. Swain, S. Sarangi, R. Srinivasan, A. Sarkar, S. Bhattacharya, S.C. Patel, R.M. Pasayat, and R.H. Sawkar
Elsevier BV



Geochronological study of metasediments and carbon isotopes in associated graphites from the Sargur area, Dharwar craton: Constraints on the age and nature of the protoliths
B. Maibam, P. Sanyal, and S. Bhattacharya
Springer Science and Business Media LLC



Source of ore fluid in lode gold deposits of Eastern Dharwar craton: An intricate issue




Oxygen isotope ratio of quartz veins from the auriferous Ramagiri-Penakacherla schist belt and surrounding granitoids in the Eastern Dharwar craton: A case for a possible link between gold mineralization and granite magmatism
Sourabh Bhattacharya, M.K. Panigrahi, H.K. Sachan, and Aditya Kharya
Elsevier BV



Mineral thermobarometry and fluid inclusion studies on the Closepet granite, Eastern Dharwar Craton, south India: Implications to emplacement and evolution of late-stage fluid
Sourabh Bhattacharya, Mruganka K. Panigrahi, and M. Jayananda
Elsevier BV



Heterogeneity in fluid characteristics in the Ramagiri-Penakacherla sector of the Eastern Dharwar Craton: Implications to gold metallogeny
S. Bhattacharya and M.K. Panigrahi
GeoScienceWorld
Abstract The auriferous Penakacherla–Ramagiri schist belt is a part of the granite-greenstone terrain of the Eastern Dharwar Craton. It is surrounded by gneissose basement and has a close spatial association with the younger granitoid units. Fluid inclusion assemblages studied from quartz veins in schists, quartz veins in granites and matrix quartz in granite indicate heterogeneity in fluid characteristics with methane-poor aqueous-carbonic, methane-rich carbonic, low salinity aqueous and high salinity aqueous fluids. Coexisting aqueous and carbonic inclusions do not seem to be the product of phase separation of a parent aqueous-carbonic fluid on all instances. This is corroborated by the fact that the pure carbonic fluid is richer in methane than the carbonic component of the aqueous-carbonic inclusions. This warrants a separate source of carbonic fluid during deposition of the gold-quartz ± sulfide veins. A high salinity component in the fluid in the schist belt is unlikely to be contributed by metamorphism of the host volcanic units rather it is comparable to the high salinity fluid present in the closely associated granites. Thus it may be surmised that the heterogeneous fluid characteristics in the auriferous Penakacherla–Ramagiri schist belt raises the possibility of fluid derivation from diverse sources, including the granitoids, rather than from a single metamorphogenic source.


Linkage of paraglacial processes from last glacial to recent inferred from Spituk sequence, Leh valley, Ladakh Himalaya
Dhananjay A. Sant, Sudesh K. Wadhawan, Rajinder K. Ganjoo, Nathani Basavaiah, Prabhin Sukumaran, and Sourabh Bhattacharya
Springer Science and Business Media LLC



Morphostratigraphy and palaeoclimate appraisal of the Leh valley, Ladakh Himalayas, India
Dhananjay A. Sant, Sudesh K. Wadhawan, Rajinder K. Ganjoo, Nathani Basavaiah, Prabhin Sukumaran, and Sourabh Bhattacharya
Springer Science and Business Media LLC