Abstract
Origin and evolutionary history of the Cuddapah Basin in SE India has remained a subject of considerable speculation whether it was evolved through vertical tectonic movements, extentional stretching or even cometary impact. Based on detailed seismic and other geophysical studies (Gravity, magnetotelluric and heat flow), we have delineated signatures of a possible deep seated mantle plume below southwestern part of the Cuddapah Basin, which may have been responsible for the 1.1 Ga kimberlitic magmatism in the eastern part of the Dharwar craton (EDC). The thermal anomaly associated with this mantle plume appears to have resulted into 15–20 km thick magmatic underplating (Vp: 7.10–7.30 km/s; density 3.07–3.16 g/cm3) below the Parnapalle region of the southwestern Cuddapah Basin, which also coincides with the high gravity and high conductivity anomaly. The massive underplating led to thickening of the crust to about 40–44 km below southwestern part of the Cuddapah Basin, compared to about 34± 2 km in the surrounding regions of EDC, indicating thermal restructuring of the crust / mantle boundary. This plume, which was apparently active in an area of about 500 km radius, may have also affected the Closepet granitic region, which is ∼100 km west of Cuddapah Basin.
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Anil Kumar, Heaman Larry, M. and Manikyamba, C. (2007) Neoproterozoic kimberlites in south India: a possible link to 1.1 Ga global magmatism. Precambrian Res., v.154, pp.192–204.
Cerveny, V., Molotkov, I. and Psencik, I. (1977) Ray Method in Seismology. Univ. of Karlova, Prague, Czechoslovakia, 214p.
Dwivedy, K.K. (1995) Economic aspects of the Cuddapah Basin with special reference to Uranium-An overview. Jour. Geol. Soc. India, pp.116–138.
Gass, I.G., Chapman, D.S., Pollack, H.N. and Thorpe, R.S. (1978) Geological and geophysical parameters of mid-plate volcanism. Phil. Trans. Roy. Soc. London, v.A288, pp.581–597.
Gupta, M.L., Sharma, S.R. and Sundar, A. (1991) Heat flow and heat generation in the Archaean Dharwar cratons and implications for the southern Indian Shield geotherm and lithospheric thickness. Tectonophysics, v. 194, pp. 107–122.
Jayananda, M., Moyen, J.F., Martin, H., Peucat, J.J., Auvray, B. and Mahabaleswar, B. (2000) Late Archaean (2550-2520 Ma) juvenile magmatism in the Eastern Dharwar craton, southern India: constraints from geochronology, Nd-Sr isotopes and whole rock geochemistry. Precambrian Res., v.99, pp.225–254.
Kaila, K.L., Roy Chowdhury, K., Reddy, P.R., Krishna, V.G., Hari Narain, Subbotin, S.I., Sollogub, V.B., Chekunov, A.V., Kharetchko, G.E., Lazarenko, M.A. and Ilchenko, T.V. (1979) Crustal structure along Kavali-Udipi profile in the Indian peninsular shield from deep seismic sounding. Jour. Geol. Soc. India, v.20, pp.307–333.
Kumar, P., Yuan, X., RAVI Kumar, M., Kind, R., Li, X. and Chadha, R.K. (2007) The rapid drift of the Indian tectonic plate. Nature, v.449, pp.894–897, doi:10.1038/nature06214.
Liu, L. and Zoback, M.D. (1997) Lithospheric strength and intraplate seismicity in the New Madrid seismic zone. Tectonics, v.16, pp.585–595.
Mall, D. M., Pandey, O. P., Chandrakala, K. and Reddy, P. R. (2008) Imprints of a Proterozoic tectonothermal anomaly below the 1.1 Ga kimberlitic province of Southwest Cuddapah basin, Dharwar craton (Southern India). Geophys. Jour. Int., v.172, pp.422–438.
Manglik, A. (2006) Mantle heat-flow and thermal structure of the northern block of southern granulite terrain, India. Jour.Geodynamics, v.41, pp.510–519.
Naganjaneyulu, K. and Harinarayana, T. (2004) Deep crustal electrical signatures of Eastern Dharwar Craton, India. Gondwana Res., v.7, no.4, pp.951–960.
Negi, J.G., Pandey, O.P. and Agrawal, P.K. (1986) Supermobility of hot Indian lithosphere. Tectonophysics, v.135, pp.147–156.
Pandey, O.P. and Agrawal, P.K. (1999).Lithosphric mantle deformation beneath the Indian cratons. Jour. Geol., v.107, pp.683–692.
Pandey, O.P., Chandrakala, K., Parthasarathy, G., Reddy, P.R. and KOTI Reddy, G. (2009) Upwarped high velocity mafic crust, subsurface tectonics and causes of intraplate Latur-Killari (M 6.2) and Koyna (M 6.3) earthquakes, India — A comparative study. Jour. Asian Earth Sci., v.34, pp.781–795.
Pirajno Franco (2007) Mantle plumes, associated intraplate tectono-magmatic processes and ore systems. Episodes, v.30, no.1, pp.1–19.
Polet, J. and Anderson, D.L. (1995) Depth extent of cratons as inferred from tomographic studies. Geology, v.23. pp.205–208.
Radhakrishna, T., Krishnendu, N.R. and Balasubramonian, G. (2007) Mafic dyke magmatism around the Cuddapah Basin: age constraints, petrological characteristics and geochemical inference for a possible magma chamber on the southwestern margin of the basin. Jour. Geol. Soc. India, v.70, pp.194–206.
Ray, L., Kumar, P.S, Reddy, G.K., Roy, S., Rao, G.V., Srinivasan, R. and Rao, R.U.M. (2003) High mantle heat flow in a Precambrian granulite province: Evidence from southern India. Jour. Geophys. Res., v.108, No.B2, 2084, doi:10.1029/2001JB000688.
Reddy, P.R., Chandrakala, K. and Sridhar, A.R. (2000) Crustal velocity structure of the Dharwar craton, India. Jour. Geol. Soc. India, v.55, pp.381–386.
Reddy P.R., Chandrakala., K., Prasad, A.S.S.S.R.S. and Rama Rao, CH. (2004). Lateral and vertical crustal velocity and density variations in the Southwestern Cuddapah Basin and adjoining Eastern Dharwar Craton. Curr. Sci., v.87, pp.1607–1614.
Roy, S. and Rao, R.U.M. (1999) Geothermal investigations in the 1993 Latur earthquake area, Deccan volcanic province, India. Tectonophysics, v.306, pp.237–252.
Roy, S. and Rao, R.U.M. (2000) Heat flow in the Indian shield. Jour. Geophys. Res., v.105, pp.25,587–25,604.
Roy, S. and Rao, R.U.M. (2003) Towards a crustal thermal model for the Archean-Dharwar craton, Southern India. Phys. Chem. Earth, v.28, pp.361–373.
Roy, S., Ray, L., Bhattacharya, A. and Srinivasan, R. (2008) Heat flow and crustal thermal structure in the Late Archaean Closepet granite batholith, south India. Int. Jour. Earth Sci., v.97, pp.245–256, doi: 10.1007/s00531-007-0239-2.
Sarkar, D., Chandrakala, K., Padmavathi Devi, P., Sridhar, A.R., Sain, K. and Reddy, P.R. (2001) Crustal velocity structure of western Dharwar Craton, South India. Jour. Geodynamics, v.31, pp.227–241.
Singh, A.P., Mishra, D.C., Gupta, S.B. and Rao, M.R.K.P. (2004) Crustal structure and domain tectonics of the Dharwar Craton (India):insight from new gravity data. Jour. Asian Earth Sci., v.23, pp.141–152.
Zelt, C.A. and Ellis, R.M. (1988) Practical and efficient ray tracing in two dimensional media for rapid travel time and amplitude forward modeling, Can. Jour. Explor. Geophys., v.24, pp.16–31.
Zelt, C.A. and Smith, R.B. (1992) Seismic traveltime inversion for 2-D crustal velocity structure, Geophys. Jour. Int., v.108, pp.16–34.
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Chandrakala, K., Pandey, O.P., Mall, D.M. et al. Seismic signatures of a proterozoic thermal plume below southwestern part of the Cuddapah Basin, Dharwar craton. J Geol Soc India 76, 565–572 (2010). https://doi.org/10.1007/s12594-010-0117-6
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DOI: https://doi.org/10.1007/s12594-010-0117-6