Geochemistry of Dalma Metavolcanic Suite from Proterozoic Singhbhum Mobile Belt, Eastern India: Implications for Petrogenesis and Tectonic Setting
Authors
-
Department of Geology, Aligarh Muslim University, Aligarh - 202 002
Shabber H. Alvi -
Department of Geology, Satellite Campus Leh, University of Kashmir - 194 101
Akhtar R. Mir
-
Department of Earth Sciences, University of Kashmir, Srinagar - 190 006
Irfan M. Bhat
Keywords:
No Keywords.Abstract
The Dalma metavolcanic belt is composed of ultramafics at the base, tuffs on top and basalts in-between. It extends for about 200kms east-west in the middle of the Proterozoic Singhbhum Mobile Belt. Ultramafics are chiefly composed of actinolite, hornblende, relic pyroxene and olivine. The main mineral constituents of basalts are actinolite, hornblende, chlorite, epidote, clinozoisite and plagioclase whereas; tuffs are composed of xenocrysts of biotite, quartz, k-feldspar, plagioclase and iron oxides. Ultramafic samples have high MgO (> 21 wt.%) and low SiO2 (> 42 wt.%), Al2O3 (< 10 wt.%) and Na2O+K2O (< 1 wt.%). CaO shows large variation in these samples from 3.91 to 7.77 wt. %. In studied basalt samples SiO2, TiO2, Al2O3, MgO and alkalis (Na2O+K2O) show variation like (45.7-48.3 wt.%), (0.64-0.97 wt.%), (9.3-13.9 wt.%), (8.5-13.6 wt.%) and (0.95-4.64 wt.%) respectively. In studied tuffs the SiO2, TiO2, Al2O3, MgO and alkalis show variation from (48.9-49.8 wt.%), (0.7-0.8 wt.%), (13.6-13.9 wt.%), (8.4-9.1 wt.%) and (2.39-2.85 wt.%) respectively. In general, studied samples show light rare earth element depleted patterns and flat patterns for heavy rare earth elements similar to MORBs on chondrite normalized REE diagrams. The overall enrichment of LILEs (e.g., Rb, K and Th) and depletion of HFSEs (e.g., Nb-Ta trough) on primitive mantle normalized multi-element diagrams are similar to subduction zone or islamd arc basalts. Ratios like Ti/Y, Ti/Zr, Zr/Nb and Ti/V are also similar to those found in arc related volcanic suites. Sm/Yb vs La/Sm diagram indicates generation of melts from the spinel lherzolite mantle source. On tectonic setting discrimination diagrams like Zr vs Zr/Y, Zr vs. Ti and Ti vs. V majority of studied samples clearly show island arc tectonic affinity.Downloads
Issue
Section
Downloads
Published
How to Cite
References
Arndt, N.T. (1994) Archean komatiites. Developments in Precambrian Geology, v.11, pp.11-44.
Balaram, V., Manikyamba, C., Ramesh, S.L. and Saxena, V.K. (1990) Determination of rare earth elements in Japanese rock standards by inductively coupled plasma-mass-spectrometry. Atomic Spectrometry, v.11, pp.19-23.
Banerjee, P.K. (1982) Stratigraphy, petrology and geochemistry of some Precambrian basic volcanic and associated rocks of Singhbhum district Bihar and Mayurbhanj and Koenjhar districts, Orissa. Mem. Geol. Surv. India, v.111, 58p.
Bezard, R., Hebert, R., Wang, C., Dostal, J., Dai, J. and Zhong, H. (2011) Petrology and geochemistry of the Xiugugabu ophiolitic massif western Yarlung Zangbo Suture Zone, Tibet. Lithos, v.125, pp.347-367.
Bhattacharyya, D.S., Gupta, D. and Sarkar, A.N. (1980) Tectonic environment and chemical affinity of Precambrian basalt from Singhbhum, eastern India. Krystalinikum, v.15, pp.144-155.
Bhattacharya, D.S. and Sanyal, P. (1988) The Singhbhum orogen - its structure and stratigraphy. In: Mukhopadhyay, D. (Eds.), Precambrian of the Eastern Indian Shield. Memoir Geological Society of India, 8, pp. 85-111.
Bose, M.K (1994) Sedimentation pattern and tectonic evolution of the Proterozoic Singhbhum basin in the eastern Indian shield. Tectonophysics, v.231, pp.325-346.
Bose, M.K. and Chakraborti, M.K. (1981) Fossil marginal basin from the Indian shield: A model for the evolution of the Singhbhum Precambrian belt, Eastern India. Geologische Rundschau, v.70, pp.504-518.
Bose, M.K., Chakraborti, M.K. and Saunders, A.D. (1989) Petrochemistry of the lavas from Proterozoic Dalma volcanic belt, Singhbhum, eastern India. Geologische Rundschau, v.78, pp.633-648.
Brenan, J.M., Shaw, H.F., Phinney, D.L., Ryerson, F.J. (1994) Rutile-aqueous fluid partitioning of Nb, Ta, Hf, Zr, U and Th: implications for high field strength element depletion in island arc-arc basalt. Earth Planet. Sci. Lett., v.128, pp.327-339.
Chakraborti, M.K and Bose, M.K. (1985) Evaluation of the tectonic setting of Precambrian Dalma volcanic belt, eastern India, using major and trace element characters. Precambrian Res., v.28, pp.253-268.
Davies, J.F., Grant, R.W.E. and Whitehead, R.E.S. (1979) Immobile trace elements and Archean volcanic stratigraphy in the Timmins mining area, Ontario. Canadian Jour. Earth Sci., v.16, pp.305-311.
Frey, F.A. (1979) Trace element geochemistry: applications to the igneous petrogenesis of terrestrial rocks. Rev. Geophys., v.17, pp.803-823.
Gupta, A., Basu, A. and Ghosh, P.K. (1980) The Proterozoic ultramafic and mafic lavas and tuffs of the Dalma greenstone belt, Singhbhum, Eastern India. Canadian Jour. Earth Sci., v.17, pp.210-231.
Holm, P.E. (1985) The geochemical fingerprints of different tectonomagmatic environments using hygromagmatophile element abundances of tholeiitic basalts and basaltic andesites. Chemical Geol., v.51, pp.303-23.
Iyengar, S.V.P. and Murthy, Y.G.K. (1982) The evolution of the ArchaeanProterozoic crust in parts of Bihar and Orissa, eastern India. Rec. Geol. Surv. India, v.112, pp.1-5.
Leat, P.T., Pearce, J.A., Barker, P.F., Millar, I.L., Barry, T.L. and Larter, R.D. (2004) Magma genesis and mantle flow at a subducting slab edge: the South Sandwich arc-basin system. Earth Planet. Sci. Lett., v.227, pp.17-35.
Le Bas, M.J. (2000) IUGS reclassification of the high-Mg and picritic volcanic rocks. Jour. Petrol., 41, pp.1467-470.
Mazumder, R. (2005) Proterozoic sedimentation and volcanism in the Singhbhum crustal province, India and their implications. Sedimentary Geol., v.176, pp.167-193.
Mahadevan, T.M. (2002) Geology of Bihar and Jharkhand. Geological Society of India, Bangalore, 563p.
Mir, A.R., Balaram, V. and Alvi, S.H. (2010) Geochemistry of mafic dikes in the Singhbhum Orissa craton: implications for subduction-related metasomatism of the mantle beneath the eastern Indian craton. Internat. Geol. Rev., v.52(1), pp.79-94.
Mir, A.R., Balaram, V. and Alvi, S.H. (2011) Geochemistry of the mafic dykes in parts of the Singhbhum granitoid complex: petrogenesis and tectonic setting. Arabian Jour. Geosci., v.4, pp.933-943.
Misra, S. (2006) Precambrian chronostratigraphic growth of Singhbhum-Orissa Craton, Eastern Indian Shield: An alternative model. Jour. Geol. Soc. India, v.67, pp.356-378.
Moorbath, S., Taylor, P.N. and Jones, N.W. (1986) Dating the oldest terrestrial rocks - facts and fiction. Chemical Geol., v.57, pp.63-86.
Mullen, E.D. (1983) MnO/TiO2/P2O5: a minor element discriminant for basaltic rocks of oceanic environments and its implications for petrogenesis. Earth Planet. Sci. Lett., v.62, pp.53-62.
Naha, K. and Ghosh, S.K. (1960) Archaean palaeogeography of E. and N. Singhbhum. Geol. Magz., v.97, pp.436-439.
Pearce, J.A. (2008) Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust. Lithos, v.100, pp.14-48.
Pearce, J.A. and Cann, J.R. (1973) Tectonic setting of the basic volcanic rocks determined using trace element analysis. Earth Planet. Sci. Lett., v.19, pp.290-300.
Pearce, J.A. and Gale, G.H. (1977) Identification of ore deposition environment from the trace element geochemistry of associated igneous host rocks. In: Volcanic Processes in Ore Genesis. Spec. Publ., Geol. Soc. London, no.7, pp.14-24.
Pearce, J.A. and Norry, M.J. (1979) Petrogenetic implications of Ti, Zr, Y and Nb variations in volcanic rocks. Contrib. Mineral. Petrol., v.69, pp.33-47.
Pearce, J.A. and Peate, D.W. (1995) Tectonic implications of the composition of volcanic arc magmas. Annual Rev Earth Planet. Sci. Lett., v.23, pp.251-285.
Radhakrishna, B.P. (1989) Suspect tectono-stratigraphic terrains elements in Indian subcontinent. Jour. Geol. Soc. India, v.34, pp.1-24.
Ray, S.L., Sarkar, S.S., Saha, A.K. and Sarkar, S.N. (1991) REE distribution in the early Archaean amphibolites of the Singhbhum-Orissa Iron Ore craton, eastern India. Indian Minerals, v.45, pp.19-32.
Roy, A., Sarkar, A., Jeyakumar, S., Aggrawal, S. K. and Ebihara, M. (2002) Mid-Proterozoic plume-related thermal event in Eastern Indian craton: evidence from trace elements, REE geochemistry and Sr-Nd isotope systematics of basic-ultrabasic intrusives from Dalma Volcanic Belt. Gondwana Res., v.5, pp.133-146
Saha, A.K. (1994) Crustal evolution of Singhbhum- north Orissa, eastern India. Mem. Geol. Surv. India, v.27, 341p.
Sarkar, A.N. (1982a) Structral and petrological evolution of the Precambrian rocks in western Singhbhum. Mem. Geol. Surv. India, v.113, 97p.
Sarkar, A.N. (1982b) Precambrian tectonic evolution of eastern India: A model of converging microplates. Tectonophysics, v.86, pp.363-397.
Sarkar, S.N. and Saha, A.K. (1963) On the occurrence of two intersecting orogenic belts in Singhbhum and adjacent areas. Geol. Magz., v.100, pp.69-92.
Sarkar, S.N. and Saha, A.K. (1977) The present status of the Precambrian stratigraphy, tectonics and geochronology of Singhbhum-Keonjhar Mayurbhanj region, Eastern India. Indian Jour. Earth Sci., pp.37-65.
Sengupta, S., Paul, D.K., De Laeter, J.R., McNaughton, N.J., Bandyopadhyay, P.K. and De Smeth, J.B. (1991) Mid-Archaean evolution of the eastern Indian craton: geochemical and isotopic evidence from the Bonai pluton. Precambrian Res., v.49, pp.23-37.
Sengupta, S., Sarkar, G., Ghosh-Roy A.K., Bhaduri, S.K., Gupta S.N. and Mandal, A. (2000) Geochemistry and Rb-Sr Geochronology of acid tuffs from the northern fringe of the Singhbhum craton and their significance in the Precambrian evolution. Indian Mineral., v.54, pp.43-56.
Shervias, J.W. (1982) Ti-V plots and the petrogenesis of modern and ophiolitic lavas. Earth Planet. Sci. Lett., v.59, pp.101-118.
Singh S.P., Sinha, P.K., Sharan, R.R. and Sesha Sai, V.V. (2001) Petrology and geochemistry of the acid agglomerates, Dorea, Singhbhum, Jharkhand. PCEM, Patna Chapter Seminar Volume (Ed. S.P. Singh), pp.235-241.
Sun, S.S. and McDonough, W.F. (1989) Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In: Saunders, A.D., Norry, M.J. (Eds.), Magmatism in the Ocean Basins. Geol. Soc. London Spec. Publi., v.42, pp.313-345.
Taylor, S.R. and Mclennan, S.M. (1985) The continental crust: Its composition and evolution, Blackwell Scientific Publisher, Oxford, 312p.
Verma, R.K., Mukhopadhaya, M., Roy, S.K. and Singh, R.P.R. (1978) An analysis of gravity fields over northern Singhbhum. Tectonophysics, v.44, pp.41-63.
Winchester, J.A. and Floyd, P.A. (1977) Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chemical Geol., v.20, pp.325-343.
Woodhead, J., Eggins, S. and Johnson, R. (1998) Magma genesis in the New Britain island arc: further insights into melting and mass transfer processes. Jour. Petrol., v.39, pp.1641-1668.
