Abstract
We report a new occurrence of sapphirine-spinel-corundum bearing granulites enclosed in granitic gneisses near Jagtiyal in the Eastern Dharwar Craton (EDC). These granulites are very important in deciphering the prehistory of the thermal peak of metamorphism due to the presence of refractory phases. The appearance of sapphirine is related to the following reactions: (a) Spl1 + Crd1 = Spr1 (2:2:1) (b) Phl (in Bt1) + Crn1 = East (in Bt2) + Spr2 (7:9:3) + Crd2 (c) Bt2 + Crd1 + Crn1 = Spr2 (7:9:3) + Kfs + H2O (d) Crd1 + Spl1 + Crn1 = Spr2 (7:9:3). The P-T evolution of these sapphirine granulites has been constrained through the use of THERMOCALC program. Temperature of formation of sapphirine-spinel assemblages is high, around 800 °C, and pressure ranges from 5–7 kbars, suggesting that sapphirine formation took place during decompression stage.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Drury, S.A. (1984) A Proterozoic intercratonic basin, dyke swarms and thermal evolution of south India. Jour. Geol. Soc. India, v.25, pp.437–444.
Friend, C.R.L., Janardhan, A. S. and Swamy, N.S.C. (1993) A retrogressive sapphirine-cordierite-talc paragenesis in a spinel-orthopyroxenite from Southern Karnataka, India. Min. Mag. v.57, pp.273–288.
Holland, T.J.B. and Powell, R. (1998) An internally consistent thermodynamic data set for phases of petrological interest. Jour. Metamorph. Geol., v.16, pp.309–343.
Kelsey, D.E., Clark, C., Hand, M. and Collins, A.S. (2006) Comment on “First report of garnet-corundum rocks from southern India: implications for prograde high-pressure (eclogite-facies?) metamorphism”. Earth Planet. Sci. Lett., v.249(3–4), pp.529–534.
Kelsey, D.E. (2008) On ultrahigh temperature metamorphism. Gondwana Res., v.13, pp.1–29.
Kretz, R. (1983) Symbols for rock-forming minerals. Am. Mineral., v.68, pp.277–279.
Lal, R.K., Ackermand, D., Seifert, F. and Haldar, S.K. (1978) Chemographic re1ationshps in sapphirine-bearing rocks from Sonapahar, Assam, India. Contrib. Mineral. Petrol., v.67, pp.169–187.
Meert, J. G., Pandit, M. K., Pradhan, V. R., Banks, J., Sirianni, R., Stroud, M., Newstead, B. and Gifford, J. (2010) Precambrian crustal evolution of Peninsular India: A 3.0 billion year odyssey. Jour. Asian Earth Sci., v.39, pp.483–515.
Mukhopadhyay, D. and Basak, K. (2009) The Eastern Ghats Belt-A polycyclic granulite terrain. Jour. Geol. Soc. India, v.73, pp.489–518.
Murthy, N.G.K. (1995) Proterozoic mafic dykes in southern peninsular India: A review. Mem. Geol. Soc. India, No.33, pp.91–98.
Patel, S.C., Ravi, S., Kumar, Anil and Pati, J.K. (2010) Sapphirine bearing Mg-Al xenolith in Proterozoic kimberlite from Dharwar craton South India. Curr. Sci., v.98, pp.547–550.
Powell, R and Holland, T.J.B. (1994) Optimal geothermometry and geobarometry. Am. Mineral., v.79, pp.120–133.
Prakash, D. and Sharma, I.N. (2008) Reaction textures and metamorphic evolution of Quartz-free Granulites from Namlekonda (Karimnagar), Andhra Pradesh, India. Int. Geol. Rev., v.50, pp.1008–1021.
Prakash, D. and Sharma, I.N. (2011) Metamorphic Evolution of Karimnagar Granulite Terrane, Eastern Dharwar Craton, South India. Geol. Mag., v.48, pp.112–132.
Santosh, M. and Sajeev, K. (2006) Anticlockwise evolution of ultrahightemperature granulites within continental collision zone in southern India. Lithos, v.92, pp.447–64.
Sarbajna, C., Bose, S., Rajagopalan, V., Das, K., Som, A., Paul, A. K., Shivkumar, K., Umamaheswar, K. and Chaki, A. (2013) U-Cr-rich high Mg-Al granulites from Karimnagar Granulite Belt, India: implications for Neoarchean-Paleoproterozoic events in southern India. Mineral. Petrol. (In press).
Sarvothaman, H. (1984) Occurrences of sapphirine-bearing rocks near Jagtiyal, Karimnagar district, A. P. Quart. Jour. Geol. Mineral. Met. Soc. India, v.56, pp.202–207.
Sharma, I.N., Lal, R.K. and Mohan, A. (2003) Chemographic relationship and metamorphic evolution of orthopyroxene or sillimanite-bearing garnet-cordierite gneisses and sapphirine-spinel-corundum granulites from Karimnagar, NE part of the eastern Dharwar craton, India. Mem. Geol. Soc. India, v.52, pp.195–228.
Sharma, I.N. and Prakash, D. (2006) New occurrence of Kornerupinebearing granulites from Karimnagar, A.P. Curr. Sci., v.91, pp.678–683.
Sharma, I.N. and Prakash, D. (2007) Reaction Textures and P-T Conditions of Opx-Crd Gneisses from Karimnagar, Andhra Pradesh, India. Mineral. Petrol., v.90, pp.175–197.
Sharma, I. N. and Prakash, D. (2008) A New Occurrence of Sapphirinebearing granulite from Podur, A.P. Mineral. Petrol., v.92, pp.415–425.
Sharma, R.S. (2009) Cratons and fold belts of India. Lecture Notes in Earth Sciences, 127, p.304.
Srikarni, C., Limaye, M.A. and Janardhan, A.S. (2004) Saphhirine bearing granulites from Abu-Balaram area, Gujarat State: implications for India-Madagascar Connection. Gond. Res., v.7, pp.1214–1218.
Vansutre, S. and Hari, K.R. (2010) Granulite belts of Central India with special reference to the Bhopalpatnam Granulite Belt: Significance in crustal evolution and implications for Columbia supercontinent. Jour. Asian Earth Sci., v.39, pp.794–803.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Prakash, D., Chandra Singh, P. & Hokada, T. A new occurrence of sapphirine-spinel-corundum-bearing granulite from NE of Jagtiyal, Eastern Dharwar Craton, Andhra Pradesh. J Geol Soc India 82, 5–8 (2013). https://doi.org/10.1007/s12594-013-0115-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12594-013-0115-6