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Characterization and metamorphic evolution of Mesoproterozoic granulites from Sonapahar (Meghalaya), NE India, using EPMA monazite dating

Published online by Cambridge University Press:  15 January 2020

Shyam Bihari Dwivedi Open the ORCID record for Shyam Bihari Dwivedi [Opens in a new window] ,
Kevilhoutuo Theunuo  and
Ravi Ranjan Kumar Open the ORCID record for Ravi Ranjan Kumar [Opens in a new window]
Shyam Bihari Dwivedi*
Affiliation:
Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India
Kevilhoutuo Theunuo
Affiliation:
Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India
Ravi Ranjan Kumar
Affiliation:
Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India
*
Author for correspondence: Shyam Bihari Dwivedi, Email: [email protected]
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Abstract

This paper presents three different age domains, obtained by electron microprobe monazite dating, for granulitic gneisses collected from the Shillong-Meghalaya Gneissic Complex in Sonapahar, NE India, which contain radioactive materials, e.g. thorium (3.32–7.20 wt %), uranium (0.133–1.172 wt %) and lead (0.101–0.513 wt %). The microprobe analyses of monazite grains in the rock samples show that the monazites have three different ages ranging from Mesoproterozoic to Neoproterozoic. The oldest age (1571 ± 22 Ma) represents a peak metamorphic event, the youngest dominant age indicates the Pan-African tectonic event (478 ± 7 Ma) and the intermediate age marks the Grenvillian orogeny (1034 ± 91 Ma) or may be a mixing artefact; these ages are located at the cores, rims and intermediate parts of the monazite grains, respectively. The equilibrium mineral phases calculated for the granulitic gneisses from Sonapahar lie in a P–T range from 5.9 kbar/754 °C to 8.3 kbar/829 °C in the NCKFMASH system. Plotting the P–T conditions of the granulitic gneisses reveals a clockwise P–T path. Two major metamorphic events are observed in Sonapahar. The M1 metamorphic stage is represented by peak mineral assemblages of prograde garnet-forming reactions (8.2 kbar/∼713 °C) during Mesoproterozoic time (1571 ± 22 Ma). The M2 metamorphic stage featured decompression (3.9 kbar/∼701 °C) in which garnet–sillimanite broke down to form cordierite along an isothermal decompression path during the Pan-African tectonic event (478 ± 7 Ma).

Keywords

monazite datingpseudosectionP–T conditionsGrenvillian orogenyPan-African event
Type
Original Article
Information
Geological Magazine , Volume 157 , Issue 9 , September 2020 , pp. 1409 - 1427
Copyright
© Cambridge University Press 2020

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References

Acharyya, SK, Mitra, ND and Nandy, DR (1986) Regional geology and tectonic setting of North-East India and Adjoining region. In Geology of Nagaland Ophiolite. G. B. Ghosh Commemorative Volume (A Compilation of Research Papers on Nagaland Ophiolite) (eds Mitra, ND, Acharyya, SK, Datta, AK, Ghosh, S, Nandy, DR, Roy, DK, Vidyadharan, KT, Venktaraman, P, Srivastava, RK, Bhattacharyya, S, Joshi, A, Jena, SK and Goswami, HK), pp. 6–12. Geological Survey of India, Memoir 119.Google Scholar
Anon (1974) Geology and mineral resources of the states of India – Assam and adjoining states. Geological Survey of India, Miscellaneous Publication 30, 1–24.Google Scholar
Banerjee, AK (1955) A petrological note on the metamorphites around Sonapahar in the Khasi hills, Assam. Journal of University of Guwahati 4, 201–16.Google Scholar
Bhowmik, SK, Sarbadhikari, AB, Spiering, B and Raith, M (2005) Mesoproterozoic reworking of Palaeoproterozoic ultrahigh-temperature granulites in the Central Indian Tectonic Zone and its implications. Journal of Petrology 46, 1085–119.CrossRefGoogle Scholar
Bhowmik, SK, Wilde, SA, Bhandari, A, Pal, T and Pant, NC (2012) Growth of the Greater Indian landmass and its assembly in Rodinia: geochronological evidence from the Central Indian Tectonic Zone. Gondwana Research 22, 54–72.CrossRefGoogle Scholar
Bhowmik, SK, Wilde, SA, Bhandari, A and Sarbadhikari, AB (2014) Zoned monazite and zircon as monitors for the thermal history of granulite terranes: an example from the Central Indian Tectonic Zone. Journal of Petrology 55, 585–621.CrossRefGoogle Scholar
Bidyananda, M and Deomurari, MP (2007) Geochronological constraints on the evolution of Meghalaya massif, northeastern India: an ion microprobe study. Current Science 93, 1620–3.Google Scholar
Bingen, B and van Breemen, O (1998) U–Pb monazite ages in amphibolite to granulite-facies orthogneiss reflect hydrous mineral breakdown reaction: Sveconorwegian Province of SW Norway. Contributions to Mineralogy and Petrology 132, 336–5.CrossRefGoogle Scholar
Biswal, TK, de Waele, B and Ahuja, H (2007) Timing and dynamics of the juxtaposition of the Eastern Ghats mobile belt against the Bhandara craton, India: a structural and zircon U–Pb SHRIMP study of the fold-thrust belt and associated nepheline syenite plutons. Tectonics 26, 1–21.CrossRefGoogle Scholar
Boger, SD, Carson, CJ, Wilson, CJL and Fanning, CM (2000) Neoproterozoic deformation in the Radok Lake region of the northern Prince Charles Mountains, East Antarctica; evidence for a single protracted orogenic event. Precambrian Research 104, 1–24.CrossRefGoogle Scholar
Borah, P, Hazarika, P, Mazumdar, AC and Rabha, M (2019) Monazite and xenotime U–Th–Pbtotal ages from basement rocks of the (central) Shillong–Meghalaya Gneissic Complex, Northeast India. Journal of Earth System Science 128, 68, doi: 10.1007/s12040-019-1085-x.CrossRefGoogle Scholar
Braun, I, Montel, JM and Nicollet, C (1998) Electron microprobe dating of monazites from high-grade gneisses and pegmatites of the Kerala Khondalite Belt, Southern India. Chemical Geology 146, 65–85.CrossRefGoogle Scholar
Chatterjee, N (2017) Constraints from monazite and xenotime growth modelling in the MnCKFMASH-PYCe system on the P–T path of a metapelite from Shillong-Meghalaya Plateau: implications for the Indian shield assembly. Journal of Metamorphic Geology 35, 393–412.CrossRefGoogle Scholar
Chatterjee, N, Banerjee, M, Bhattacharya, A and Maji, AK (2010) Monazite chronology, metamorphism-anatexis and tectonic relevance of the mid-Neoproterozoic Eastern Indian Tectonic Zone. Precambrian Research 179, 99–120.CrossRefGoogle Scholar
Chatterjee, N, Bhattacharya, A, Duarah, BP and Mazumdar, AC (2011) Late Cambrian reworking of Palaeo-Mesoproterozoic granulites in Shillong–Meghalaya Gneissic Complex (Northeast India): evidence from PT pseudosection analysis and monazite chronology and implications for East Gondwana assembly. Journal of Geology 119, 311–30.CrossRefGoogle Scholar
Chatterjee, N, Crowley, JL and Ghose, NC (2008) Geochronology of the 1.55 Ga Bengal anorthosite and Grenvillian metamorphism in the Chotanagpur Gneissic Complex, eastern India. Precambrian Research 161, 303–16.CrossRefGoogle Scholar
Chatterjee, N, Mazumder, AC, Bhattacharya, A and Saikia, RR (2007) Mesoproterozoic granulites of the Shillong-Meghalaya Plateau: evidence of westward continuation of the Prydz Bay Pan-African suture into Northeastern India. Precambrian Research 152, 1–26.CrossRefGoogle Scholar
Cocherie, A, Legendre, O, Peucat, JJ and Kouamelan, A (1998) Geochronology of polygenic monazites constrained by in situ electron microprobe Th-U-total Pb determination: implications for Pb behavior in monazite. Geochimica et Cosmochimica Acta 62, 2475–97.CrossRefGoogle Scholar
Collins, AS, Santosh, M, Braun, I and Clark, C (2007) Age and sedimentary provenance of the southern granulites, South India: U-Th-Pb SHRIMP secondary ion mass spectrometry. Precambrian Research 155, 125–38.CrossRefGoogle Scholar
Crawford, AR (1974) Indo-Antarctica, Gondwanaland and pattern of the distortion of a granulite belt. Tectonophysics 22, 141–57.CrossRefGoogle Scholar
Dahl, PS, Hamilton, MA, Jercinovic, MJ, Terry, MP, Williams, ML and Frei, R (2005) Comparative isotopic and chemical geochronometry of monazite, with implications for U-Th-Pb dating by electron microprobe: an example from metamorphic rocks of the eastern Wyoming Craton (U.S.A.). American Mineralogist 90, 619–38.CrossRefGoogle Scholar
Dalziel, IWD (1991) Pacific margins of Laurentia and East Antarctica–Australia as a conjugate rift pair: evidence and implications for an Eocambrian supercontinent. Geology 19, 598–601.2.3.CO;2>CrossRefGoogle Scholar
Desikachar, SV (1974) A review of the tectonic and geological history of eastern India in terms of plate tectonic theory. Journal of the Geological Society of India 15, 137–49.Google Scholar
DeWolf, CP, Belshaw, N and O’Nions, RK (1993) A metamorphic history from micron-scale 207Pb/ 206Pb chronometry of Archean monazite. Earth and Planetary Science Letters 120, 207–20.CrossRefGoogle Scholar
Dwivedi, SB (2011) Geodynamic evolution of Mesoproterozoic granulites of Meghalaya: evident from geothermobarometry, P-T path and P-T pseudosection. In Geodynamics, Sedimentation and Biotic Response in the Context of India–Asia Collision (ed. Tiwari, RP), pp. 85–101. Geological Society of India, Memoir 77.Google Scholar
Dwivedi, SB and Theunuo, K (2011) Two-pyroxene bearing granulites from Patharkhang, Shillong-Meghalaya Gneissic Complex (SMGC). Current Science 100, 100–5.Google Scholar
Dwivedi, SB and Theunuo, K (2013) Petrology and geochemistry of metapelites and basic granulite from Sonapahar region of Shillong Meghalaya Gneissic Complex, North East India. Journal of the Geological Society of India 81, 55–766.CrossRefGoogle Scholar
Dwivedi, SB and Theunuo, K (2017) Occurrence of wagnerite in Mg-Al granulites of Sonapahar Meghalaya. Journal of Earth System Science 126, 52.CrossRefGoogle Scholar
Evans, P (1964) The tectonic framework of Assam. Journal of the Geological Society of India 5, 80–96.Google Scholar
Fitzsimons, ICW (2000) A review of tectonic events in the East Antarctic shield and their implications for Gondwana and earlier supercontinents. Journal of African Earth Sciences 31, 3–23.CrossRefGoogle Scholar
Fitzsimons, ICW (2003) Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica. In Proterozoic East Gondwana: Supercontinent Assembly and Breakup 206 (eds Yoshida, M, Windley, BF and Dasgupta, S), pp. 93–130. Geological Society of London, Special Publication no. 206.Google Scholar
Foster, G, Gibson, HD, Parrish, R, Horstwood, M, Fraser, J and Tindle, A (2004) Textural, chemical and isotopic insights into the nature and behaviour of metamorphic monazite. Chemical Geology 191, 183–207.CrossRefGoogle Scholar
Franz, G, Andrehs, G and Rhede, D (1996) Crystal chemistry of monazite and xenotime from Saxothuringian–Moldanubian metapelites, NE Bavaria, Germany. European Journal of Mineralogy 8, 1097–118.CrossRefGoogle Scholar
Ghosh, AMN (1952) A preliminary note on the gneissic complex of Nongmaweit-Rambrai-Nongstoin plateau, Khasi hills, Assam. Records in Geological Survey of India 82, 308–14.Google Scholar
Ghosh, AMN and Saha, AK (1954) On certain sapphirine-bearing rocks from the Khasi Hills, Assam. Records in Geological Survey of India 83, 445.Google Scholar
Ghosh, JG, de Wit, MJ and Zartman, RE (2004) Age and tectonic evolution of Neoproterozoic ductile shear zones in the southern granulite terrain of India, with implications for Gondwana studies. Tectonics 23, 1–38.CrossRefGoogle Scholar
Gibson, HD, Carr, SD, Brown, RL and Hamilton, MA (2004) Correlations between chemical and age domains in monazite, and metamorphic reactions involving major pelitic phases: an integration of ID-TIMS and SHRIMP geochronology with Y-Th-U X-ray mapping. Chemical Geology 211, 237–60.CrossRefGoogle Scholar
Golani, PR (1991) Nongchram fault: a major dislocation zone from western Meghalaya. Journal of the Geological Society of India 37, 31–8.Google Scholar
Gupta, RP and Sen, AK (1988) Imprints of the Ninety-East Ridge in the Shillong-Plateau, Indian shield. Tectonophysics 154, 335–41.CrossRefGoogle Scholar
Harijan, N, Sen, AK, Sarkar, S, Das, JD and Kanungo, DP (2003) Geomorpho-tectonics around Sung valley carbonatite complex, Shillong plateau, NE India: remote sensing and GIS approach. Journal of the Geological Society of India 62, 103–9.Google Scholar
Hazarika, P, Mishra, B, Ozha, MK and Pruseth, KL (2017) An improved EPMA analytical protocol for U–Th–Pbtotal dating in xenotime: age constraints from polygenetic Mangalwar Complex, Northwestern India. Chemie der Erde Geochemistry 77, 69–79.CrossRefGoogle Scholar
Hoffman, PF (1991) Did the breakout of Laurentia turn Gondwanaland inside out? Science 252, 1409–12.CrossRefGoogle ScholarPubMed
Holland, TJB and Powell, R (1998) An internally consistent thermodynamic dataset for phases of petrological interest. Journal of Metamorphic Geology 16, 309–43.CrossRefGoogle Scholar
Holland, TJB and Powell, R (2003) Activity–composition relations for phases in petrological calculations: an asymmetric multi component formulation. Contributions to Mineralogy and Petrology 145, 492–501.CrossRefGoogle Scholar
Johnson, TE, Clark, C, Taylor, RJM, Santosh, M and Collins, AS (2015) Prograde and retrograde growth of monazite in migmatites: an example from the Nagercoil Block, southern India. Geoscience Frontiers 6, 373–87.CrossRefGoogle Scholar
Kelsey, DE, Clark, C and Hand, M (2008) Thermobarometric modelling of zircon and monazite growth in melt-bearing systems: examples using model metapelitic and metapsammitic granulites. Journal of Metamorphic Geology 26, 199–212.CrossRefGoogle Scholar
Kumar, RR and Dwivedi, SB (2019) EPMA monazite geochronology of the granulites from Daltonganj, Eastern India and its correlation with Rodinia Supercontinent. Journal of Earth System Science 128, 1–22.CrossRefGoogle Scholar
Kumar, S, Rino, V, Hayasaka, Y, Kimura, K, Raju, S, Terada, K and Pathak, M (2017) Contribution of Columbia and Gondwana supercontinent assembly and growth-related magmatism in the evolution of the Meghalaya Plateau and the Mikir Hills, Northeast India: constraints from U–Pb SHRIMP zircon geochronology and geochemistry. Lithos 277, 356–77.CrossRefGoogle Scholar
Lal, RK, Ackermand, D, Seifert, F and Haldar, SK (1978) Chemographic relationships in sapphirine-bearing rocks from Sonapahar, Assam, India. Contributions to Mineralogy and Petrology 67, 169–87.CrossRefGoogle Scholar
Li, ZX, Bogdanova, SV, Collins, AS, Davidson, A, Waele, BD, Ernst, RE, Fitzsimons, ICW, Fuck, RA, Gladkochub, DP, Jacobs, J, Karlstrom, KE, Lu, S, Natapov, LM, Pease, V, Pisarevsky, SA, Thrane, K and Vernikovsky, V (2008) Assembly, configuration, and break-up history of Rodinia: a synthesis. Precambrian Research 160, 179–210.CrossRefGoogle Scholar
Ludwig, KR (2003) User’s Manual for Isoplot 3.00: A Geochronological Toolkit for Microsoft Excel. Berkeley Geochronology Center, Special Publication no. 4.Google Scholar
Mahan, KH, Goncalves, P, Williams, ML and Jercinovic, MJ (2006) Dating metamorphic reactions and fluid flow: application to exhumation of high-P granulites in a crustal-scale shear zone, western Canadian Shield. Journal of Metamorphic Geology 24, 193–217.CrossRefGoogle Scholar
Maji, AK, Goon, S, Bhattacharya, A, Mishra, B, Mahato, S and Bernhardt, HJ (2008) Proterozoic polyphase metamorphism in the Chhotanagpur gneissic complex (India) and implication for trans-continental Gondwanaland correlation. Precambrian Research 162, 385–402.CrossRefGoogle Scholar
Mazumdar, SK (1976) A summary of the Precambrian geology of the Khasi Hills, Meghalaya. Geological Survey of India, Miscellaneous Publication 23, 311–34.Google Scholar
Mezger, K and Cosca, MA (1999) The thermal history of the Eastern Ghats Belt (India) as revealed by U-Pb and 40Ar/39Ar dating of metamorphic and magmatic minerals: implications SWEAT correlation. Precambrian Research 94, 251–71.CrossRefGoogle Scholar
Mishra, DC, Singh, B, Tiwari, VM, Gupta, SB and Rao, MBSV (2000) Two cases of continental collision and related tectonics during the Proterozoic period in India: insight from gravity modelling constrained by seismic and magnetotelluric studies. Precambrian Research 99, 149–69.CrossRefGoogle Scholar
Montel, JM, Foret, S, Veschambre, M, Christian, N and Provost, A (1996) Electron microprobe dating of monazite. Chemical Geology 131, 37–53.CrossRefGoogle Scholar
Moores, EM (1991) Southwest U.S.–East Antarctic (SWEAT) connection: a hypothesis. Geology 19, 425–28.2.3.CO;2>CrossRefGoogle Scholar
Mukherjee, S, Dey, A, Ibanez-Mejia, M, Sanyal, S and Sengupta, P (2018) Geochemistry, U–Pb geochronology and Lu–Hf isotope systematics of a suite of ferroan (A-type) granitoids from the CGGC: evidence for Mesoproterozoic crustal extension in the East Indian shield. Precambrian Research 305, 40–63.CrossRefGoogle Scholar
Mukherjee, S, Dey, A, Sanyal, S, Ibanez-Mejia, M, Dutta, U and Sengupta, P (2017) Petrology and U–Pb geochronology of zircon in a suite of charnockitic gneisses from parts of the Chhotanagpur Granite Gneiss Complex (CGGC): evidence for the reworking of a Mesoproterozoic basement during the formation of the Rodinia supercontinent. In Crustal Evolution of India and Antarctica: The Supercontinent Connection (eds Pant, NC and Dasgupta, S), pp. 197–231. Geological Society of London, Special Publication no. 457.Google Scholar
Naganjaneyulu, K and Santosh, M (2010) The Central India Tectonic Zone: a geophysical perspective on continental amalgamation along a Mesoproterozoic suture. Gondwana Research 18, 547–64.CrossRefGoogle Scholar
Nandy, DR (1986) Tectonics, seismicity and gravity of Northeastern India and adjoining region. In Geology of Nagaland Ophiolite. G. B. Ghosh Commemorative Volume (A Compilation of Research Papers on Nagaland Ophiolite) (eds Mitra, ND, Acharyya, SK, Datta, AK, Ghosh, S, Nandy, DR, Roy, DK, Vidyadharan, KT, Venktaraman, P, Srivastava, RK, Bhattacharyya, S, Joshi, A, Jena, SK and Goswami, HK), pp. 13–16. Geological Survey of India Memoir 119.Google Scholar
Nandy, DR (2001) Geodynamics of the Northeastern India and the Adjoining Region. Kolkata: ABC Publications, 209 pp.Google Scholar
Parrish, RR (1990) U–Pb dating of monazite and its application to geological problem. Canadian Journal of Earth Sciences 27, 1431–50.CrossRefGoogle Scholar
Powell, R and Holland, TJB (1988) An internally consistent thermodynamic dataset with uncertainties and correlations; 3, Application to geobarometry, worked examples and a computer program. Journal of Metamorphic Geology 6, 173–204.CrossRefGoogle Scholar
Prabhakar, N (2013) Resolving poly-metamorphic Paleoarchean ages by chemical dating of monazites using multi-spectrometer U, Th and Pb analyses and sub-counting methodology. Chemical Geology 347, 255–70.CrossRefGoogle Scholar
Pyle, JM and Spear, FS (2003) Yttrium zoning in garnet: coupling of major and accessory phases during metamorphic reactions. Geological Materials Research 1, 1–49.Google Scholar
Rajendran, CP, Rajendran, K, Duarah, BP, Baruah, S and Earnest, A (2004) Interpreting the style of faulting and paleoseismicity associated with the 1897 Shillong, northeast India, earthquake: Implications for regional tectonism. Tectonics 23, 1–12.CrossRefGoogle Scholar
Ramesh, DS, Kumar, MR, Devi, EU, Raju, PS and Yuan, X (2005) Moho geometry and upper mantle images of northeast India. Geophysical Research Letters 32, 14301–4.CrossRefGoogle Scholar
Rogers, JJW and Santosh, M (2002) Configuration of Columbia, a Mesoproterozoic supercontinent. Gondwana Research 5, 5–22.CrossRefGoogle Scholar
Rose, D (1980) Brabantite, CaTh[PO4]2, a new mineral of the monazite group. Neues Jahrbuch für Mineralogy, Monatshefte 6, 247–57.Google Scholar
Sanyal, S and Sengupta, P. (2012) Metamorphic evolution of the Chhotanagpur granite gneiss complex of the East Indian Shield: current status. In Palaeoproterozoic of India (eds Mazumder, R and Saha, D), pp. 117–45. Geological Society of London, Special Publication no. 365.Google Scholar
Scherrer, NC, Engi, M, Gnos, E, Jakob, V and Liechti, A (2000) Monazite analysis; from sample preparation to microprobe age dating and REE quantification. Schweizerische mineralogische und petrographische Mitteilungen (Bulletin suisse de mineralogie et pétrographie) 80, 93–105.Google Scholar
Sengupta, PR and Agarwal, NK (1998) The tectonic segments of Northeastern India and associated gold mineralisation. Journal of the Geological Society of India 52, 549–56.Google Scholar
Spear, FS and Pyle, JM (2002) Apatite, monazite, and xenotime in metamorphic rocks. Reviews in Mineralogy and Geochemistry 48, 293–335.CrossRefGoogle Scholar
Spear, FS, Pyle, JM and Cherniak, D (2009) Limitations of chemical dating of monazite. Chemical Geology 266, 218–30.CrossRefGoogle Scholar
Srivastava, RK, Guarino, V, Wu, FY, Melluso, L and Sinha, AK (2019) Evidence of sub-continental lithospheric mantle sources and open-system crystallization processes from in-situ U–Pb ages and Nd–Sr–Hf isotope geochemistry of the Cretaceous ultramafic-alkaline-(carbonatite) intrusions from the Shillong Plateau, north-eastern India. Lithos 330–331, 108–19.CrossRefGoogle Scholar
Suzuki, K and Adachi, M (1991) Precambrian provenance and Silurian metamorphism of the Tsubonasawa paragneiss in the South Kitakami terrane, Northeast Japan, revealed by the Chemical Th–U-total Pb-isochron ages of monazite, zircon and xenotime. Geochemical Journal 25, 357–76.CrossRefGoogle Scholar
Suzuki, K and Adachi, M (1994) Middle Precambrian detrital monazite and zircon from the Hida gneiss on Oki-Dogo Island, Japan: their origin and implications for the correlation of basement gneiss of Southwest Japan and Korea. Tectonophysics 235, 277–92.CrossRefGoogle Scholar
Suzuki, K and Adachi, M (1998) Denudation history of the high T/P Ryoke metamorphic belt, Southwest Japan; constraints from CHIME monazite ages of gneisses and granitoids. Journal of Metamorphic Geology 16, 23–37.CrossRefGoogle Scholar
Suzuki, K and Kato, T (2008) CHIME dating of monazite, xenotime, zircon and polycrase: protocol, pitfalls and chemical criterion of possibly discordant age data. Gondwana Research 14, 569–86.CrossRefGoogle Scholar
Taylor, RJM, Clark, C, Fitzsimons, ICW, Santosh, M, Hand, M, Evans, N and McDonald, B (2014) Post-peak, fluid-mediated modification of granulite facies zircon and monazite in the Trivandrum Block, southern India. Contributions to Mineralogy and Petrology 168, 1–17.CrossRefGoogle Scholar
Taylor, RJM, Kirkland, C and Clark, C (2016) Accessories after the facts: constraining the timing, duration and conditions of high-temperature metamorphic processes. Lithos 264, 239–57.CrossRefGoogle Scholar
Tickyj, H, Hartmann, LA, Vasconcellos, MAZ, Philipp, RP and Remus, MVD (2004) Electron microprobe dating of monazite substantiates ages of major geological events in the southern Brazilian shield. Journal of South American Earth Sciences 16, 699–713.CrossRefGoogle Scholar
White, RW, Powell, R and Holland, TJB (2001) Calculation of partial melting equilibria in the system Na2O-CaO-K2O-FeO-MgO-Al2O3-SiO2-H2O (NCKFMASH). Journal of Metamorphic Geology 19, 139–53.CrossRefGoogle Scholar
White, RW, Powell, R and Holland, TJB (2007) Progress relating to calculation of partial melting equilibria for metapelites. Journal of Metamorphic Geology 25, 511–27.CrossRefGoogle Scholar
Whitney, DL and Evans, BW (2010) Abbreviations for names of rock-forming minerals. American Mineralogist 95, 185–7.CrossRefGoogle Scholar
Williams, ML, Jercinovic, MJ, Goncalves, P and Mahan, K (2006) Format and philosophy for collecting, compiling and reporting microprobe monazite ages. Chemical Geology 22, 1–15.CrossRefGoogle Scholar
Williams, ML, Jercinovic, MJ and Hetherington, CJ (2007) Microprobe monazite geochronology: understanding geologic processes by integrating composition and chronology. Annual Review of Earth and Planetary Sciences 35, 137–75.CrossRefGoogle Scholar
Williams, ML, Jercinovic, MJ and Terry, MP (1999) Age mapping and dating of monazite on the electron microprobe: deconvoluting multistage tectonic histories. Geology 27, 1023–6.2.3.CO;2>CrossRefGoogle Scholar
Yedekar, DB, Jain, SC, Nair, KKK and Dutta, KK (1990) The Central Indian collision suture. Precambrian of Central India. Geological Survey of India, Special Publication 28, 1–37.Google Scholar
Yin, A, Dubey, CS, Webb, AAG, Kelty, TK, Grove, M, Gehrels, GE and Burgess, WP (2010) Geologic correlation of the Himalayan orogen and Indian Craton: Part I. Structural geology, U–Pb zircon geochronology, and tectonic evolution of the Shillong Plateau and its neighbouring regions in Northeast India. Geological Society of America Bulletin 122, 336–59.CrossRefGoogle Scholar
Zhu, XK and O’Nions, RK (1999) Monazite chemical composition: some implications for monazite geochronology. Contributions to Mineralogy and Petrology 137, 351–63.CrossRefGoogle Scholar
Zhu, XK, O’Nions, RK, Belshaw, NS and Gibb, AJ (1997) Lewisian crustal history from in situ SIMS mineral chronometry and related metamorphic textures. Chemical Geology 136, 205–18.CrossRefGoogle Scholar
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