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Volumn 3, Issue 3, 2000, Pages 293-314

Multistage Metamorphic Evolution of the Trivandrum Granulite Block, Southern India

Author keywords

Geothermal gradient; Metamorphism; Thermobarometry; Trivandrum Granulite Block; Uplift

Indexed keywords

CHARNOCKITE; GEOBAROMETRY; GEOTHERMAL GRADIENT; GRANULITE; METAMORPHISM; POTASH; TECTONIC EVOLUTION;

EID: 0001338123     PISSN: 1342937X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S1342-937X(05)70289-6     Document Type: Article
Times cited : (26)

References (55)
  • 1
    • 0038762551 scopus 로고    scopus 로고
    • The pyroxene granulites of Kunnanpara, Trivandrum Block, Southern India
    • Santosh, M. and Yoshida, M. (Eds.), Gond. Res. Group Mem. No. 3
    • Ajith-Kumar, S., Santosh, M. and Yoshida, M. (1996) The pyroxene granulites of Kunnanpara, Trivandrum Block, Southern India. In: Santosh, M. and Yoshida, M. (Eds.), The Archaean and Proterozoic terrains of Southern India within East Gondwana. Gond. Res. Group Mem. No. 3, pp. 327-332.
    • (1996) The Archaean and Proterozoic Terrains of Southern India Within East Gondwana , pp. 327-332
    • Ajith-Kumar, S.1    Santosh, M.2    Yoshida, M.3
  • 2
    • 0000516146 scopus 로고    scopus 로고
    • The application of single zircon evaporation and model Nd ages to the interpretation of polymetamorphic terrains: An example from the Proterozoic mobile belt of south India
    • Bartlett, J.M., Dougherty-Page, J.S., Harris, N.B.W., Hawkesworth, C.J. and Santosh, M. (1998) The application of single zircon evaporation and model Nd ages to the interpretation of polymetamorphic terrains: an example from the Proterozoic mobile belt of south India. Contrib. Mineral. Petrol., v. 131, pp. 181-195.
    • (1998) Contrib. Mineral. Petrol. , vol.131 , pp. 181-195
    • Bartlett, J.M.1    Dougherty-Page, J.S.2    Harris, N.B.W.3    Hawkesworth, C.J.4    Santosh, M.5
  • 3
    • 0029474294 scopus 로고
    • New isotope constraints on the crustal evolution of South India and Pan-African granulite metamorphism
    • Mem. No. 34
    • Bartlett, J.M., Harris, N.B.W., Hawkesworth, C.J. and Santosh, M. (1995) New isotope constraints on the crustal evolution of South India and Pan-African granulite metamorphism. Geol. Soc. India, Mem. No. 34, pp. 391-397.
    • (1995) Geol. Soc. India , pp. 391-397
    • Bartlett, J.M.1    Harris, N.B.W.2    Hawkesworth, C.J.3    Santosh, M.4
  • 4
    • 0038086015 scopus 로고    scopus 로고
    • Granulite facies spinel-cordierite assemblages from the Kerala Khondalite Belt, Southern India
    • Bindu, R.S. (1997) Granulite facies spinel-cordierite assemblages from the Kerala Khondalite Belt, Southern India. Gond. Res., v. 1, pp. 121-128.
    • (1997) Gond. Res. , vol.1 , pp. 121-128
    • Bindu, R.S.1
  • 5
    • 0038762550 scopus 로고    scopus 로고
    • Dating of zoned monazite grains from south Indian granulites
    • Japan, October 13-14, 1997. Program and Abstract, Natl. Inst. Pol. Res.
    • Bindu, R.S. and Yoshida, M. (1997) Dating of zoned monazite grains from south Indian granulites. International Symposium "Origin and Evolution of Continents" in Tokyo, Japan, October 13-14, 1997. Program and Abstract, Natl. Inst. Pol. Res., p. 10.
    • (1997) International Symposium "Origin and Evolution of Continents" in Tokyo , pp. 10
    • Bindu, R.S.1    Yoshida, M.2
  • 6
    • 0032565267 scopus 로고    scopus 로고
    • Electron microprobe dating of monazites from high-grade gneisses and pegmatites of the Kerala Khondalite Belt, southern India
    • Braun, I., Montel, J.-M. and Nicollet, C. (1998) Electron microprobe dating of monazites from high-grade gneisses and pegmatites of the Kerala Khondalite Belt, southern India. Chem. Geol., v. 146, pp. 65-85.
    • (1998) Chem. Geol. , vol.146 , pp. 65-85
    • Braun, I.1    Montel, J.-M.2    Nicollet, C.3
  • 7
    • 0030434572 scopus 로고    scopus 로고
    • Dehydration-melting phenomena in leptynitic gneisses and the generation of leucogranites: A case study from the Kerala Khondalite Belt, southern India
    • Braun, I., Raith, M. and Ravindra Kumar, G.R. (1996) Dehydration-melting phenomena in leptynitic gneisses and the generation of leucogranites: a case study from the Kerala Khondalite Belt, southern India. J. Petrol., v. 37, pp. 1285-1305.
    • (1996) J. Petrol. , vol.37 , pp. 1285-1305
    • Braun, I.1    Raith, M.2    Ravindra Kumar, G.R.3
  • 9
    • 0000447330 scopus 로고    scopus 로고
    • Ultra-high temperature metamorphism in the Kerala Khondalite Belt
    • Santosh, M., and Yoshida, M. (Eds.) Gond. Res. Group Mem. No. 3
    • Chacko, T., Lamb, M. and Farquhar, J. (1996) Ultra-high temperature metamorphism in the Kerala Khondalite Belt. In: Santosh, M., and Yoshida, M. (Eds.) The Archaean and Proterozoic Terrains of Southern India within East Gondwana. Gond. Res. Group Mem. No. 3, pp. 157-165.
    • (1996) The Archaean and Proterozoic Terrains of Southern India Within East Gondwana , pp. 157-165
    • Chacko, T.1    Lamb, M.2    Farquhar, J.3
  • 10
    • 0023503979 scopus 로고
    • Metamorphic P-T conditions of the Kerala (S. India) khondalite belt, a granulite facies supracrustal terrain
    • Chacko, T., Ravindra Kumar, G.R. and Newton, R.C. (1987) Metamorphic P-T conditions of the Kerala (S. India) khondalite belt, a granulite facies supracrustal terrain. J. Geol., v. 95, pp. 343-358.
    • (1987) J. Geol. , vol.95 , pp. 343-358
    • Chacko, T.1    Ravindra Kumar, G.R.2    Newton, R.C.3
  • 14
    • 0038762544 scopus 로고
    • Polymetamorphism in the Lapland granulite belt: Evidence from fluid inclusions
    • Fonarev, V.I. and Kreulen, R. (1995) Polymetamorphism in the Lapland granulite belt: evidence from fluid inclusions. Petrology, v. 3, pp. 340-356.
    • (1995) Petrology , vol.3 , pp. 340-356
    • Fonarev, V.I.1    Kreulen, R.2
  • 17
    • 0000488706 scopus 로고
    • A consistent system of thermometers for metamorphic complexes
    • Fonarev, V.I., Graphchikov, A.A. and Konilov, A.N. (1991b) A consistent system of thermometers for metamorphic complexes. Int. Geol. Rev., v. 33, pp. 743-783.
    • (1991) Int. Geol. Rev. , vol.33 , pp. 743-783
    • Fonarev, V.I.1    Graphchikov, A.A.2    Konilov, A.N.3
  • 18
    • 0008301004 scopus 로고
    • Experimental studies of equilibria involving solid solutions, and geologic thermobarometry
    • Moscow: Nauka, (in Russian)
    • Fonarev, V.I., Graphchikov, A.A. and Konilov, A.N. (1994) Experimental studies of equilibria involving solid solutions, and geologic thermobarometry. In: Experimental Problems of Geology. Moscow: Nauka, pp. 323-355 (in Russian).
    • (1994) Experimental Problems of Geology , pp. 323-355
    • Fonarev, V.I.1    Graphchikov, A.A.2    Konilov, A.N.3
  • 19
    • 0031862971 scopus 로고    scopus 로고
    • Conditions of metamorphism of the garnet-cordierite gneisses from Malai Mahadeswara Hills, South India and the origin of Zn-Cr-rich spinel
    • Fonarev, V.I., Janardhan, A.S. and Konilov, A.N. (1998a) Conditions of metamorphism of the garnet-cordierite gneisses from Malai Mahadeswara Hills, South India and the origin of Zn-Cr-rich spinel. J. Geol. Soc. India, v. 51, pp. 75-86.
    • (1998) J. Geol. Soc. India , vol.51 , pp. 75-86
    • Fonarev, V.I.1    Janardhan, A.S.2    Konilov, A.N.3
  • 20
    • 0343616599 scopus 로고
    • Some aspects of thermometry of metamorphic complexes (application to the Central part of Kola peninsula, Baltic shield)
    • B.T. Rumvegeri, F. Walraven (Eds.)
    • Fonarev, V.I., Konilov, A.N. and Graphchikov, A.A. (1991c) Some aspects of thermometry of metamorphic complexes (application to the Central part of Kola peninsula, Baltic shield). IGCP no.273, Newsletter/ Bulletin (B.T. Rumvegeri, F. Walraven (Eds.)), v. 1, pp. 23-36.
    • (1991) IGCP No.273, Newsletter/ Bulletin , vol.1 , pp. 23-36
    • Fonarev, V.I.1    Konilov, A.N.2    Graphchikov, A.A.3
  • 21
    • 0027835687 scopus 로고
    • Geological thermometry and barometry of metamorphic complexes: Contral-Kola granulite-gneiss region
    • Fonarev, V.I., Konilov, A.N. and Graphchikov, A.A. (1993) Geological thermometry and barometry of metamorphic complexes: Contral-Kola granulite-gneiss region. Int. Geol. Rev., v. 35, pp. 401-435.
    • (1993) Int. Geol. Rev. , vol.35 , pp. 401-435
    • Fonarev, V.I.1    Konilov, A.N.2    Graphchikov, A.A.3
  • 22
    • 0038086023 scopus 로고    scopus 로고
    • P-T conditions of polymetamorphism in the Central part of the Eastern Ghats mobile belt, India
    • Fonarev, V.I., Konilov, A.N. and Rao, A.T. (1998b) P-T conditions of polymetamorphism in the Central part of the Eastern Ghats mobile belt, India. Petrology, v. 6, pp. 70-85.
    • (1998) Petrology , vol.6 , pp. 70-85
    • Fonarev, V.I.1    Konilov, A.N.2    Rao, A.T.3
  • 23
    • 0029475760 scopus 로고
    • Evaluation of pressure-temperature of metamorphism and tectonothermal history of the granulites from the Visakhapatnam area in the Eastern Ghats, India. India and Antarctica during the Precambrian
    • Mem. No. 34
    • Fonarev, V.I., Rao, A.T. and Konilov, A.N. (1995) Evaluation of pressure-temperature of metamorphism and tectonothermal history of the granulites from the Visakhapatnam area in the Eastern Ghats, India. India and Antarctica during the Precambrian. Geol. Soc. India, Mem. No. 34, pp. 111-124.
    • (1995) Geol. Soc. India , pp. 111-124
    • Fonarev, V.I.1    Rao, A.T.2    Konilov, A.N.3
  • 24
    • 0032468499 scopus 로고    scopus 로고
    • Fluid inclusions in rocks from the Central Kola granulite area (Baltic shield)
    • Fonarev, V.I., Touret, J.L.R. and Kotel'nikova, Z. A. (1998c) Fluid inclusions in rocks from the Central Kola granulite area (Baltic shield). Eur. J. Mineral., v. 10, pp. 1181-1200.
    • (1998) Eur. J. Mineral. , vol.10 , pp. 1181-1200
    • Fonarev, V.I.1    Touret, J.L.R.2    Kotel'nikova, Z.A.3
  • 25
    • 0346771209 scopus 로고
    • Garnetorthopyroxene-plagioclase-quartz geobarometer (experimental calibration)
    • in Russian
    • Graphchikov, A.A. and Fonarev, V.I. (1990) Garnetorthopyroxene-plagioclase-quartz geobarometer (experimental calibration). Dokl. Akad. Nauk SSSR., v. 312, pp. 1215-1217 (in Russian).
    • (1990) Dokl. Akad. Nauk SSSR. , vol.312 , pp. 1215-1217
    • Graphchikov, A.A.1    Fonarev, V.I.2
  • 26
    • 0029473655 scopus 로고
    • 2 infiltration and charnockite formation at a classic locality
    • 2 infiltration and charnockite formation at a classic locality. Contrib. Mineral. Petrol., v. 120, pp. 83-94.
    • (1995) Contrib. Mineral. Petrol. , vol.120 , pp. 83-94
    • Harley, S.L.1    Santosh, M.2
  • 27
    • 0020329755 scopus 로고
    • Geobarometry, geothermometry, and late Archean geotherms from the granulite facies terrain of South India
    • Harris, N.B.W., Holt, R.W. and Drury, S.A. (1982) Geobarometry, geothermometry, and late Archean geotherms from the granulite facies terrain of South India. J. Geol., v. 90, pp. 509-527.
    • (1982) J. Geol. , vol.90 , pp. 509-527
    • Harris, N.B.W.1    Holt, R.W.2    Drury, S.A.3
  • 28
    • 0028328129 scopus 로고
    • Crustal evolution in South India: Constraints from Nd isotopes
    • Harris, N.B.W., Santosh, M. and Taylor, P.N. (1994) Crustal evolution in South India: constraints from Nd isotopes. J. Geol., v. 102, pp. 139-150.
    • (1994) J. Geol. , vol.102 , pp. 139-150
    • Harris, N.B.W.1    Santosh, M.2    Taylor, P.N.3
  • 29
  • 31
    • 0344485495 scopus 로고
    • An experimental study of the charnockite assemblage biotite + orthopyroxene + K-feldspar + quartz
    • Konilov, A.N. and Fonarev, V.I. (1993) An experimental study of the charnockite assemblage biotite + orthopyroxene + K-feldspar + quartz. Petrology, v. 1, pp. 224-240.
    • (1993) Petrology , vol.1 , pp. 224-240
    • Konilov, A.N.1    Fonarev, V.I.2
  • 32
    • 0347401593 scopus 로고    scopus 로고
    • A consistent system of geothermometers and geobarometers: Testing with using independent experimental data
    • Konilov, A.N., Graphchikov, A.A., Fonarev, V.I. and Sultanov, D.M. (1998) A consistent system of geothermometers and geobarometers: testing with using independent experimental data. Experiment in Geosciences, v. 7, pp. 36-38.
    • (1998) Experiment in Geosciences , vol.7 , pp. 36-38
    • Konilov, A.N.1    Graphchikov, A.A.2    Fonarev, V.I.3    Sultanov, D.M.4
  • 34
    • 85108181091 scopus 로고    scopus 로고
    • 2
    • Murthy, N.G.K. and Ram Mohan, V. (Eds.), Charnockite and granulite facies rocks. August 29-September 2, 1996, Chennai, India. Geologists Assoc. Tamil Nadu Publ.
    • 2. In: Murthy, N.G.K. and Ram Mohan, V. (Eds.), Charnockite and granulite facies rocks. Proc. International Symp. August 29-September 2, 1996, Chennai, India. Geologists Assoc. Tamil Nadu Publ., pp. 85-100.
    • (1999) Proc. International Symp. , pp. 85-100
    • Konilov, A.N.1    Fonarev, V.I.2    Graphchikov, A.A.3
  • 36
    • 34249973320 scopus 로고
    • Grossular activity-composition relationship in ternary garnets determined by reversed displaced-equilibrium experiments
    • Koziol, A.M. and Newton, R.C. (1989) Grossular activity-composition relationship in ternary garnets determined by reversed displaced-equilibrium experiments. Contrib. Mineral. Petrol., v. 103, pp. 423-433.
    • (1989) Contrib. Mineral. Petrol. , vol.103 , pp. 423-433
    • Koziol, A.M.1    Newton, R.C.2
  • 37
    • 0020585987 scopus 로고
    • Symbols for rock-forming minerals
    • Kretz, R. (1983) Symbols for rock-forming minerals: Amer. Mineral., v. 68, pp. 277-279.
    • (1983) Amer. Mineral. , vol.68 , pp. 277-279
    • Kretz, R.1
  • 39
    • 0030204626 scopus 로고    scopus 로고
    • Paleodynamic reconstruction of the metamorphism of Lapland granulites in the Northeast of the Baltic shield
    • Scripta Technica, Inc.
    • Mints, M.V., Fonarev, V.I. and Konilov, A.N. (1996b) Paleodynamic reconstruction of the metamorphism of Lapland granulites in the Northeast of the Baltic shield. Transactions of the Russian Academy of Sciences, Earth Science Sections. Scripta Technica, Inc., v. 345, pp. 185-191.
    • (1996) Transactions of the Russian Academy of Sciences, Earth Science Sections , vol.345 , pp. 185-191
    • Mints, M.V.1    Fonarev, V.I.2    Konilov, A.N.3
  • 40
    • 0038086021 scopus 로고    scopus 로고
    • The cordierite- and orthopyroxene-bearing charnockites of Nellikkala, Trivandrum Block, Southern India
    • Santosh, M. and Yoshida, M. (Eds.) Gond. Res. Group Mem. No. 3
    • Nanda-Kumar, V. (1996) The cordierite-and orthopyroxene-bearing charnockites of Nellikkala, Trivandrum Block, Southern India. In: Santosh, M. and Yoshida, M. (Eds.) The Archaean and Proterozoic terrains of Southern India within East Gondwana. Gond. Res. Group Mem. No. 3, pp. 333-340.
    • (1996) The Archaean and Proterozoic Terrains of Southern India Within East Gondwana , pp. 333-340
    • Nanda-Kumar, V.1
  • 41
    • 0026305255 scopus 로고
    • Decompression granulites from southern Kerala, South India
    • Nanda-Kumar, V., Santosh, M. and Yoshida, M. (1991) Decompression granulites from southern Kerala, South India. J. Geosci. Osaka City Univ., v. 34, pp. 119-145.
    • (1991) J. Geosci. Osaka City Univ. , vol.34 , pp. 119-145
    • Nanda-Kumar, V.1    Santosh, M.2    Yoshida, M.3
  • 43
    • 0030430179 scopus 로고    scopus 로고
    • 2) and Mg/Fe ratio on dehydration melting of model metagreywackes
    • 2) and Mg/Fe ratio on dehydration melting of model metagreywackes. J. Petrol., v. 37, pp. 999-1024.
    • (1996) J. Petrol. , vol.37 , pp. 999-1024
    • Patiño Douce, A.E.1    Beard, J.S.2
  • 44
    • 0023519782 scopus 로고
    • Cordierite gneisses of southern Kerala, India: Petrology, fluid inclusions, and implications for crustal uplift history
    • Santosh, M. (1987) Cordierite gneisses of southern Kerala, India: petrology, fluid inclusions, and implications for crustal uplift history. Contrib. Mineral. Petrol., v. 96, pp. 343-356.
    • (1987) Contrib. Mineral. Petrol. , vol.96 , pp. 343-356
    • Santosh, M.1
  • 45
    • 0010739245 scopus 로고    scopus 로고
    • The Trivandrum and Nagercoil Granulite Blocks
    • Santosh, M. and Yoshida, M. (Eds.), Gond. Res. Group Mem. No. 3
    • Santosh, M. (1996) The Trivandrum and Nagercoil Granulite Blocks. In: Santosh, M. and Yoshida, M. (Eds.), The Archaean and Proterozoic Terrains of Southern India within East Gondwana. Gond. Res. Group Mem. No. 3, pp. 243-277.
    • (1996) The Archaean and Proterozoic Terrains of Southern India Within East Gondwana , pp. 243-277
    • Santosh, M.1
  • 46
    • 0022860301 scopus 로고
    • Charnockite in the breaking: Evidences from the Trivandrum region, south Kerala
    • Santosh, M. and Yoshida, M. (1986) Charnockite in the breaking: evidences from the Trivandrum region, south Kerala. J. Geol. Soc. India, v. 28, pp. 306-310.
    • (1986) J. Geol. Soc. India , vol.28 , pp. 306-310
    • Santosh, M.1    Yoshida, M.2
  • 48
    • 0001171978 scopus 로고
    • Carbonic fluid inclusions in South Indian granulites: Evidence for entrapment during charnockite formation
    • Santosh, M., Jackson, D.H., Harris, N.B.W. and Mattey, D.P. (1991) Carbonic fluid inclusions in South Indian granulites: evidence for entrapment during charnockite formation. Contrib. Mineral. Petrol., v. 108, pp. 318-330.
    • (1991) Contrib. Mineral. Petrol. , vol.108 , pp. 318-330
    • Santosh, M.1    Jackson, D.H.2    Harris, N.B.W.3    Mattey, D.P.4
  • 49
    • 0001903203 scopus 로고
    • Pan-African charnockite formation in East Gondwana: Geochronologic (Sm-Nd and Rb-Sr) and petrogenetic constraints
    • Santosh, M., Kagami, H., Yoshida, M. and Nanda-Kumar, V. (1992) Pan-African charnockite formation in East Gondwana: geochronologic (Sm-Nd and Rb-Sr) and petrogenetic constraints. Bull. Indian Geol. Assoc., v. 25, pp. 1-10.
    • (1992) Bull. Indian Geol. Assoc. , vol.25 , pp. 1-10
    • Santosh, M.1    Kagami, H.2    Yoshida, M.3    Nanda-Kumar, V.4
  • 50
    • 0038762541 scopus 로고    scopus 로고
    • Wollastonite-bearing calc-silicate rocks adjacent to charnockites at Nuliyam, Trivandrum block, Southern India
    • Santosh, M. and Yoshida, M. (Eds.), Gond. Res. Group Mem. No. 3
    • Satish-Kumar, M. and Santosh, M. (1996) Wollastonite-bearing calc-silicate rocks adjacent to charnockites at Nuliyam, Trivandrum block, Southern India. In: Santosh, M. and Yoshida, M. (Eds.), The Archaean and Proterozoic Terrains of Southern India within East Gondwana. Gond. Res. Group Mem. No. 3, pp. 357-364.
    • (1996) The Archaean and Proterozoic Terrains of Southern India Within East Gondwana , pp. 357-364
    • Satish-Kumar, M.1    Santosh, M.2
  • 52
    • 0030389992 scopus 로고    scopus 로고
    • Calc-silicate assemblages from the Kerala Khondalite Belt, southern India: Implications for pressure-temperature-fluid histories
    • Satish-Kumar, M., Santosh, M., Harley, S.L. and Yoshida, M. (1996a) Calc-silicate assemblages from the Kerala Khondalite Belt, southern India: Implications for pressure-temperature-fluid histories. J. Southeast Asian Earth Sci., v. 14, pp. 245-263.
    • (1996) J. Southeast Asian Earth Sci. , vol.14 , pp. 245-263
    • Satish-Kumar, M.1    Santosh, M.2    Harley, S.L.3    Yoshida, M.4
  • 53
    • 0030417720 scopus 로고    scopus 로고
    • Colour-coded compositional mapping of reaction textures in a calc-silicate - Charnockite interface at Nuliyam, Kerala
    • Satish-Kumar, M., Santosh, M., Yoshikura, S. and Yoshida, M. (1996b) Colour-coded compositional mapping of reaction textures in a calc-silicate - charnockite interface at Nuliyam, Kerala. J. Geol. Soc. India, v. 48, pp. 507-516.
    • (1996) J. Geol. Soc. India , vol.48 , pp. 507-516
    • Satish-Kumar, M.1    Santosh, M.2    Yoshikura, S.3    Yoshida, M.4
  • 54
    • 0022214217 scopus 로고
    • Progressive charnockitization of a leptynite-khondalite suite in southern Kerala, India - Evidence for formation of charnockites through decrease of fluid pressure?
    • Srikantappa, C., Raith, M. and Speiring, B. (1985) Progressive charnockitization of a leptynite-khondalite suite in southern Kerala, India - evidence for formation of charnockites through decrease of fluid pressure? J. Geol. Soc. India, v. 26, pp. 849-872.
    • (1985) J. Geol. Soc. India , vol.26 , pp. 849-872
    • Srikantappa, C.1    Raith, M.2    Speiring, B.3
  • 55
    • 0038762542 scopus 로고
    • Charnockite "in the breaking" and "making" in Kerala, South India: Tectonic and microstructural evidences
    • Yoshida, M. and Santosh, M. (1987) Charnockite "in the breaking" and "making" in Kerala, South India: tectonic and microstructural evidences. J. Geosci. Osaka City Univ., v. 30, pp. 23-49.
    • (1987) J. Geosci. Osaka City Univ. , vol.30 , pp. 23-49
    • Yoshida, M.1    Santosh, M.2


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