Abstract
The alteration of magmatic monazite and its consequences for monazite geochronology are explored in granitoids from the western part of the Ryoke belt (Iwakuni-Yanai area, SW Japan). Biotite-granite samples were collected in two plutons emplaced slightly before the main tectono-metamorphic event: the first one, a massive granite (Shimokuhara) adjoins schistose rocks affected by greenschist facies metamorphism; and the second, a gneissose granite (Namera) adjoins migmatitic gneiss that experienced upper-amphibolite facies conditions. Despite contrasting textures, the granite samples have similar mineral modes and compositions. Monazite in the massive granite is dominated by primary domains with limited secondary recrystallization along cracks and veinlets. It is variably replaced by allanite+apatite±xenotime±Th-U-rich phases. The outermost rims of primary domains yield a weighted average 206Pb/238U date of 102 ± 2 Ma while the Th-U phases show Th-U-Pb dates of 58 ± 5 and 15 to 14 ± 2–3 Ma. Monazite in the gneissose granite preserves sector- or oscillatory-zoned primary domains cross-cut by secondary domains enriched in Ca, Y, U, P, and containing numerous inclusions. The secondary domains preserve concordant 206Pb/238U dates spreading from 102 ± 3 to 91 ± 2 Ma while primary domain analyses are commonly discordant and range from 116 to 101 Ma.
Monazite alteration textures in the two granites chiefly reflect differences in their post-magmatic histories. In the massive granite, monazite replacement occurred via a nearly stoichiometrically balanced reaction reflecting interaction with an aqueous fluid enriched in Ca+Al+Si±F during hydrothermal alteration of the granitic assemblage, likely below 500 °C. In the gneissose granite, a small amount of anatectic melt, probably derived from the neighboring metasedimentary rocks, was responsible for pseudomorphic recrystallization of monazite by dissolution-reprecipitation above 600 °C. Regardless of whether monazite underwent replacement or recrystallization, primary monazite domains preserve the age of magmatic crystallization for both plutons (102 ± 2 and 106 ± 5 Ma). Conversely, the age of monazite alteration is not easily resolved. Monazite replacement in the massive granite might be constrained using the Th-U-rich alteration products; with due caution and despite probable radiogenic Pb loss, the oldest date of 58 ± 5 Ma could be ascribed to chloritization during final exhumation of the granite. The spread in apparently concordant 206Pb/238U dates for secondary domains in the gneissose granite is attributed to incomplete isotopic resetting during dissolution-reprecipitation, and the youngest date of 91 ± 2 Ma is considered as the age of monazite recrystallization during a suprasolidus metamorphic event. These results reveal a diachronous, ca. 10 Ma-long high-temperature (HT) history and an overall duration of about 15 Ma for the metamorphic evolution of the western part of the Ryoke belt.
Ackowledgments
E.S. thanks T. Kato (Nagoya University) for sharing his knowledge on microprobe analysis of monazite. We extend our thanks to J.F. Molina and two other referees for useful review comments, and to C.J. Hetherington for insightful editorial handling of the manuscript.
Funding
This work benefited from funding by the Japanese Society for the Promotion of Science (JSPS postdoctoral fellowship to E.S., JSPS grant no. 25-03715 to T. Hirajima). We acknowledge financial support by T. Kawakami (Kyoto University “Ishizue” program), and thank T. Hirata and H. Iwano for their help with preliminary analyses in Kyoto, and C. Mattinson for facilitating monazite analyses.
References cited
Alderton, D.H.M., Pearce, J.A., and Potts, P. J. (1980) Rare earth element mobility during granite alteration: Evidence from southwest England. Earth and Planetary Science Letters, 49, 149–165.10.1016/0012-821X(80)90157-0Search in Google Scholar
Aleinikoff, J.N., Schenck, W.S., Plank, M.O., Srogi, L., Fanning, C.M., Kamo, S.L., and Bosbyshell, H. (2006) Deciphering igneous and metamorphic events in high-grade rocks of the Wilmington Complex, Delaware: Morphology, cathodoluminescence and backscattered electron zoning, and SHRIMP U-Pb geochronology of zircon and monazite. Geological Society of America Bulletin, 118, 39–64.10.1130/B25659.1Search in Google Scholar
Ayers, J.C., and Watson, E.B. (1991) Solubility of apatite, monazite, zircon, and rutile in supercritical aqueous fluids with implications for subduction zone geochemistry. Philosophical Transactions—Royal Society of London A, 335, 365–375.Search in Google Scholar
Be Mezeme, E.B., Cocherie, A., Faure, M., Legendre, O., and Rossi, P. (2006) Electron microprobe monazite geochronology of magmatic events: examples from Variscan migmatites and granitoids, Massif Central, France. Lithos, 87, 276–288.10.1016/j.lithos.2005.06.011Search in Google Scholar
Bea, F., and Montero, P. (1999) Behavior of accessory phases and redistribution of Zr, REE, Y, Th, and U during metamorphism and partial melting of metapelites in the lower crust: an example from the Kinzigite Formation of Ivrea-Verbano, NW Italy. Geochimica et Cosmochimica Acta, 63, 1133–1153.10.1016/S0016-7037(98)00292-0Search in Google Scholar
Bence, A.E., and Albee, A.L. (1968) Empirical correction factors for the electron microanalysis of silicates and oxides. The Journal of Geology, 76, 382–403.10.1086/627339Search in Google Scholar
Broom-Fendley, S., Styles, M.T., Appleton, J.D., Gunn, G., and Wall, F. (2016) Evidence for dissolution-reprecipitation of apatite and preferential LREE mobility in carbonatite-derived late-stage hydrothermal processes. American Mineralogist, 101, 596–611.10.2138/am-2016-5502CCBYSearch in Google Scholar
Broska, I., and Siman, P. (1998) The breakdown of monazite in the West-Carpathian Veporic orthogneisses and Tatric granites. Geologica Carpathica, 49, 161–167.Search in Google Scholar
Broska, I., Williams, C.T., Janák, M., and Nagy, G. (2005) Alteration and breakdown of xenotime-(Y) and monazite-(Ce) in granitic rocks of the Western Carpathians, Slovakia. Lithos, 82, 71–83.10.1016/j.lithos.2004.12.007Search in Google Scholar
Brown, M. (1998) Unpairing metamorphic belts: P-T paths and a tectonic model for the Ryoke Belt, southwest Japan. Journal of Metamorphic Geology, 16, 3–22.10.1111/j.1525-1314.1998.00061.xSearch in Google Scholar
Budzyn, B., Harlov, D.E., Williams, M.L., and Jercinovic, M.J. (2011) Experimental determination of stability relations between monazite, fluorapatite, allanite, and REE-epidote as a function of pressure, temperature, and fluid composition. American Mineralogist, 96, 1547–1567.10.2138/am.2011.3741Search in Google Scholar
Budzyń, B., Konečnỳ, P., and Kozub-Budzyń, G.A. (2015) Stability of monazite and disturbance of the Th-U-Pb system under experimental conditions of 250–350 °C and 200–400 MPa. Annales Societatis Geologorum Poloniae, 85, 405–424.10.14241/asgp.2015.016Search in Google Scholar
Budzyń, B., Harlov, D.E., Kozub-Budzyń, G.A., and Majka, J. (2017) Experimental constraints on the relative stabilities of the two systems monazite-(Ce)– allanite-(Ce)–fluorapatite and xenotime-(Y)–(Y, HREE)-rich epidote– (Y, HREE)-rich fluorapatite, in high Ca and Na-Ca environments under PT conditions of 200–1000 MPa and 450–750° C. Mineralogy and Petrology, 111, 183–217.10.1007/s00710-016-0464-0Search in Google Scholar
Catlos, E.J. (2013) Generalizations about monazite: Implications for geochronologic studies. American Mineralogist, 98, 819–832.10.2138/am.2013.4336Search in Google Scholar
Cherniak, D.J., Watson, E.B., Grove, M., and Harrison, T.M. (2004) Pb diffusion in monazite: A combined RBS/SIMS study. Geochimica et Cosmochimica Acta, 68, 829–840.10.1016/j.gca.2003.07.012Search in Google Scholar
Didier, A., Bosse, V., Boulvais, P., Bouloton, J., Paquette, J.-L., Montel, J.-M., and Devidal, J.-L. (2013) Disturbance versus preservation of U-Th-Pb ages in monazite during fluid-rock interaction: Textural, chemical and isotopic in situ study in microgranites (Velay Dome, France). Contributions to Mineralogy and Petrology, 165, 1051–1072.10.1007/s00410-012-0847-0Search in Google Scholar
Dini, A., Rocchi, S., and Westerman, D.S. (2004) Reaction microtextures of REE–Y–Th–U accessory minerals in the Monte Capanne pluton (Elba Island, Italy): a possible indicator of hybridization processes. Lithos, 78, 101–118.10.1016/j.lithos.2004.04.045Search in Google Scholar
Engi, M. (2017) Petrochronology based on REE-minerals: monazite, allanite, xenotime, apatite. Reviews in Mineralogy and Geochemistry, 83, 365–418.10.1515/9783110561890-013Search in Google Scholar
Finger, F., Broska, I., Roberts, M.P., and Schermaier, A. (1998) Replacement of primary monazite by apatite-allanite-epidote coronas in an amphibolite facies granite gneiss from the eastern Alps. American Mineralogist, 83, 248–258.10.2138/am-1998-3-408Search in Google Scholar
Finger, F., Krenn, E., Schulz, B., Harlov, D., and Schiller, D. (2016) “Satellite monazites” in polymetamorphic basement rocks of the Alps: Their origin and petrological significance. American Mineralogist, 101, 1094–1103.10.2138/am-2016-5477Search in Google Scholar
Förster, H.-J. (2001) Synchysite-(Y)–synchysite-(Ce) solid solutions from Markersbach, Erzgebirge, Germany: REE and Th mobility during high-T alteration of highly fractionated aluminous A-type granites. Mineralogy and Petrology, 72, 259–280.10.1007/s007100170019Search in Google Scholar
Foster, G., Parrish, R.R., Horstwood, M.S., Chenery, S., Pyle, J., and Gibson, H.D. (2004) The generation of prograde P–T–t points and paths; a textural, compositional, and chronological study of metamorphic monazite. Earth and Planetary Science Letters, 228, 125–142.10.1016/j.epsl.2004.09.024Search in Google Scholar
Gardés, E., Jaoul, O., Montel, J.-M., Seydoux-Guillaume, A.-M., and Wirth, R. (2006) Pb diffusion in monazite: An experimental study of Pb2+ + Th4+ ↔ 2Nd3+ interdiffusion. Geochimica et Cosmochimica Acta, 70, 2325–2336.10.1016/j.gca.2006.01.018Search in Google Scholar
Geological Survey of Japan (2012) Seamless digital geological map of Japan 1: 200,000. July 3, 2012 ver. Research Information Database DB084. Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology.Search in Google Scholar
Gonçalves, G.O., Lana, C., Scholz, R., Buick, I.S., Gerdes, A., Kamo, S.L., Corfu, F., Marinho, M.M., Chaves, A.O., and Valeriano, C. (2016) An assessment of monazite from the Itambé pegmatite district for use as U–Pb isotope reference material for microanalysis and implications for the origin of the “Moacyr” monazite. Chemical Geology, 424, 30–50.10.1016/j.chemgeo.2015.12.019Search in Google Scholar
Grand’Homme, A., Janots, E., Seydoux-Guillaume, A.-M., Guillaume, D., Bosse, V., and Magnin, V. (2016) Partial resetting of the U-Th-Pb systems in experimentally altered monazite: Nanoscale evidence of incomplete replacement. Geology, 44, 431–434.10.1130/G37770.1Search in Google Scholar
Grand’Homme, A., Janots, E., Seydoux-Guillaume, A.M., Guillaume, D., Magnin, V., Hövelmann, J., Höschen, C., and Boiron, M.C. (2018) Mass transport and fractionation during monazite alteration by anisotropic replacement. Chemical Geology, 484, 51–68.10.1016/j.chemgeo.2017.10.008Search in Google Scholar
Harlov, D.E. (2011) Formation of monazite and xenotime inclusions in fluorapatite megacrysts, Gloserheia Granite Pegmatite, Froland, Bamble Sector, southern Norway. Mineralogy and Petrology, 102, 77.10.1007/s00710-011-0166-6Search in Google Scholar
Harlov, D.E., Wirth, R., and Hetherington, C.J. (2011) Fluid-mediated partial alteration in monazite: The role of coupled dissolution-reprecipitation in element redistribution and mass transfer. Contributions to Mineralogy and Petrology, 162, 329–348.10.1007/s00410-010-0599-7Search in Google Scholar
Harrison, T.M., McKeegan, K.D., and LeFort, P. (1995) Detection of inherited monazite in the Manaslu leucogranite by 208Pb232Th ion microprobe dating: crystallization age and tectonic implications. Earth and Planetary Science Letters, 133, 271–282.10.1016/0012-821X(95)00091-PSearch in Google Scholar
Hawkins, D.P., and Bowring, S.A. (1997) U-Pb systematics of monazite and xenotime: case studies from the Paleoproterozoic of the Grand Canyon, Arizona. Contributions to Mineralogy and Petrology, 127, 87–103.10.1007/s004100050267Search in Google Scholar
Heinrich, W., Andrehs, G., and Franz, G. (1997) Monazite–xenotime miscibility gap thermometry. I. An empirical calibration. Journal of Metamorphic Geology, 15, 3–16.10.1111/j.1525-1314.1997.t01-1-00052.xSearch in Google Scholar
Herzig, C.T., Kimbrough, D.L., Tainosho, Y., Kagami, H., Iizumi, S., and Hayasaka, Y. (1998) Late Cretaceous U/Pb zircon ages and Precambrian crustal inheritance in Ryoke granitoids, Kinki and Yanai districts, Japan. Geochemical Journal, 32, 21–31.10.2343/geochemj.32.21Search in Google Scholar
Hetherington, C.J., Harlov, D.E., and Budzyń, B. (2010) Experimental metasomatism of monazite and xenotime: Mineral stability, REE mobility and fluid composition. Mineralogy and Petrology, 99, 165–184.10.1007/s00710-010-0110-1Search in Google Scholar
Higashimoto, S., Nureki, T., Hara, I., Tsukuda, E., and Nakajima, T. (1983) Geology of the Iwakuni district. Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 78, 79p.Search in Google Scholar
Ikeda, T. (1993) Compositional zoning patterns of garnet during prograde metamorphism from the Yanai district, Ryoke metamorphic belt, southwest Japan. Lithos, 30, 109–121.10.1016/0024-4937(93)90010-ASearch in Google Scholar
Ikeda, T. (1998) Progressive sequence of reactions of the Ryoke metamorphism in the Yanai district, southwest Japan: The formation of cordierite. Journal of Metamorphic Geology, 16, 39–52.10.1111/j.1525-1314.1998.00060.xSearch in Google Scholar
Ikeda, T. (2004) Pressure-temperature conditions of the Ryoke metamorphic rocks in Yanai district, SW Japan. Contributions to Mineralogy and Petrology, 146, 577–589.10.1007/s00410-003-0521-7Search in Google Scholar
Ishihara, S. (1977) The magnetite-series and ilmenite-series granitic rocks. Mining Geology, 27, 293–305.Search in Google Scholar
Janoušek, V., Farrow, C.M., and Erban, V. (2006) Interpretation of whole-rock geochemical data in igneous geochemistry: introducing Geochemical Data Toolkit (GCDkit). Journal of Petrology, 47, 1255–1259.10.1093/petrology/egl013Search in Google Scholar
Jefferies, N.L. (1985) The distribution of the rare earth elements within the Carnmenellis pluton, Cornwall. Mineralogical Magazine, 49, 495–504.10.1180/minmag.1985.049.353.02Search in Google Scholar
Kato, T. (2005) New accurate Bence-Albee α-factors for oxides and silicates calculated from the PAP correction procedure. Geostandards and Geoanalytical Research, 29, 83–94.10.1111/j.1751-908X.2005.tb00657.xSearch in Google Scholar
Kawakami, T., and Ikeda, T. (2003) Boron in metapelites controlled by the breakdown of tourmaline and retrograde formation of borosilicates in the Yanai area, Ryoke metamorphic belt, SW Japan. Contributions to Mineralogy and Petrology, 145, 131–150.10.1007/s00410-002-0437-7Search in Google Scholar
Kawano, Y., and Ueda, Y. (1966) K-A dating on the igneous rocks in Japan (V). The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 56, 191–211.10.2465/ganko1941.56.191Search in Google Scholar
Kelly, N.M., Harley, S.L., and Möller, A. (2012) Complexity in the behavior and recrystallization of monazite during high-T metamorphism and fluid infiltration. Chemical Geology, 322–323, 192–208.10.1016/j.chemgeo.2012.07.001Search in Google Scholar
Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.Search in Google Scholar
Kusiak, M.A., Williams, I.S., Dunkley, D.J., Konečny, P., Słaby, E., and Martin, H. (2014) Monazite to the rescue: U–Th–Pb dating of the intrusive history of the composite Karkonosze pluton, Bohemian Massif. Chemical Geology, 364, 76–92.10.1016/j.chemgeo.2013.11.016Search in Google Scholar
Ludwig, K.R. (2004) Users manual for ISOPLOT/EX, ver. 3.1. A geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center, Special Publication, 4.Search in Google Scholar
Mielke, P., and Winkler, H.G.F. (1979) Eine bessere Berechnung der Mesonorm für granitische Gesteine. Neues Jahrbuch für Mineralogie, Monatshefte, 10, 471–480.Search in Google Scholar
Montel, J.-M. (1986) Experimental determination of the solubility of Ce-monazite in SiO2-Al2O3-K2O-Na2O melts at 800 °C, 2 kbar, under H2O-saturated conditions. Geology, 14, 659–662.10.1130/0091-7613(1986)14<659:EDOTSO>2.0.CO;2Search in Google Scholar
Moutte, J., and Iiyama, J.T. (1984) The Ryoke-Sanyo granite series in the Iwakuni-Yanai district, Southwest Honshu, Japan. Mining Geology, 34, 425–436.Search in Google Scholar
Murakami, N. (1971) An example of the emplacement of the Chugoku batholith-the Kuga granites, SW Japan. Pacific Geology, 45–56.Search in Google Scholar
Murata, K.J., Rose, H.J. Jr., Carron, M.K., and Glass, J.J. (1957) Systematic variation of rare-earth elements in cerium-earth minerals. Geochimica et Cosmochimica Acta, 11, 141–161.10.1016/0016-7037(57)90077-7Search in Google Scholar
Nakajima, T. (1994) The Ryoke plutonometamorphic belt: crustal section of the Cretaceous Eurasian continental margin. Lithos, 33, 51–66.10.1016/0024-4937(94)90053-1Search in Google Scholar
Nakajima, T., Horie, K., Adachi, T., Miyazaki, K., Dunkley, D.J., and Hokada, T. (2013) SHRIMP U-Pb ages of zircons from Ryoke metamorphic rocks. Geological Society of Japan Annual Meeting, Abstract Volume, 51.Search in Google Scholar
Nasdala, L. Corfu, F., Blaimauer, D., Chanmuang, C., Ruschel, K., Škoda, R., Wildner, M., Wirth, R., Zeug, M., and Gamini Zoysa, E. (2017) Neoproterozoic amorphous “ekanite” (Ca2Th0.9U0.1Si8O20 from Okkampitiya, Sri Lanka: A metamict gemstone with excellent lead-retention performance. Geology, 45, 919–922.10.1130/G39334.1Search in Google Scholar
Ni, Y., Hughes, J.M., and Mariano, A.N. (1995) Crystal chemistry of the monazite and xenotime structures. American Mineralogist, 80, 21–26.10.2138/am-1995-1-203Search in Google Scholar
Nureki, T. (1974) Contact metamorphism in the So-o district, Yamaguchi Prefecture, Japan—With special reference to the occurrence of sillimanite. Memoirs of the Geological Society of Japan, 11, 251–281.Search in Google Scholar
Oelkers, E.H., and Poitrasson, F. (2002) An experimental study of the dissolution stoichiometry and rates of a natural monazite as a function of temperature from 50 to 230 °C and pH from 1.5 to 10. Chemical Geology, 191, 73–87.10.1016/S0009-2541(02)00149-3Search in Google Scholar
Okudaira, T., Hayasaka, Y., Himeno, O., Watanabe, K., Sakurai, Y., and Ohtomo, Y. (2001) Cooling and inferred exhumation history on the Ryoke metamorphic belt in the Yanai district, South-west Japan: Constraints from Rb-Sr and fission-track ages of gneissose granitoid and numerical modeling. Island Arc, 10, 98–115.10.1111/j.1440-1738.2001.00312.xSearch in Google Scholar
Ondrejka, M., Uher, P., Putiš, M., Broska, I., Bačik, P., Konečný, P., and Schmiedt, I. (2012) Two-stage breakdown of monazite by post-magmatic and metamorphic fluids: An example from the Veporic orthogneiss, Western Carpathians, Slovakia. Lithos, 142-143, 245–255.10.1016/j.lithos.2012.03.012Search in Google Scholar
Pearce, N.J.G., Perkins, W.T., Westgate, J.A., Gorton, M.P., Jackson, S.E., Neal, C.R., and Chenery, S.P. (1997) A compilation of new and published major and trace element data for NIST SRM 610 and NIST SRM 612 Glass Reference Materials. Geostandards and Geoanalytical Research, 21, 115–144.10.1111/j.1751-908X.1997.tb00538.xSearch in Google Scholar
Piechocka, A.M., Gregory, C.J., Zi, J.-W., Sheppard, S., Wingate, M.T.D., and Rasmussen, B. (2017) Monazite trumps zircon: applying SHRIMP U–Pb geochronology to systematically evaluate emplacement ages of leucocratic, low-temperature granites in a complex Precambrian orogen. Contributions to Mineralogy and Petrology, 172, 63.10.1007/s00410-017-1386-5Search in Google Scholar
Poitrasson, F., Chenery, S., and Bland, D.J. (1996) Contrasted monazite hydrothermal alteration mechanisms and their geochemical implications. Earth and Planetary Science Letters, 145, 79–96.10.1016/S0012-821X(96)00193-8Search in Google Scholar
Poitrasson, F., Chenery, S., and Shepherd, T.J. (2000) Electron microprobe and LA-ICP-MS study of monazite hydrothermal alteration: Implications for U-Th-Pb geochronology and nuclear ceramics. Geochimica et Cosmochimica Acta, 64, 3283–3297.10.1016/S0016-7037(00)00433-6Search in Google Scholar
Putnis, A. (2002) Mineral replacement reactions: From macroscopic observations to microscopic mechanisms. Mineralogical Magazine, 66, 689–708.10.1180/0026461026650056Search in Google Scholar
Putnis, A. (2009) Mineral replacement reactions. Reviews in Mineralogy and Geochemistry, 70, 87–124.10.1515/9781501508462-005Search in Google Scholar
Putnis, A., and Putnis, C.V. (2007) The mechanism of reequilibration of solids in the presence of a fluid phase. Journal of Solid State Chemistry, 180, 1783–1786.10.1016/j.jssc.2007.03.023Search in Google Scholar
Pyle, J.M., Spear, F.S., Rudnick, R.L., and McDonough, W.F. (2001) Monazitexenotime-garnet equilibrium in metapelites and a new monazite-garnet thermometer. Journal of Petrology, 42, 2083–2107.10.1093/petrology/42.11.2083Search in Google Scholar
Pyle, J.M., Spear, F.S., Wark, D.A., Daniel, C.G., and Storm, L.C. (2005) Contributions to precision and accuracy of monazite microprobe ages. American Mineralogist, 90, 547–577.10.2138/am.2005.1340Search in Google Scholar
Rubatto, D., Müntener, O., Barnhoorn, A., and Gregory, C. (2008) Dissolution-reprecipitation of zircon at low-temperature, high-pressure conditions (Lanzo Massif, Italy). American Mineralogist, 93, 1519–1529.10.2138/am.2008.2874Search in Google Scholar
Sato, H. (1933) Yanaizu Geological Map, 1:75 000. Imperial Geological Survey of Japan.Search in Google Scholar
Scherrer, N.C., 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, 80, 93–105.Search in Google Scholar
Schmidt, C., Rickers, K., Bilderback, D.H., and Huang, R. (2007) In situ synchrotron-radiation XRF study of REE phosphate dissolution in aqueous fluids to 800 °C. Lithos, 95, 87–102.10.1016/j.lithos.2006.07.017Search in Google Scholar
Seydoux-Guillaume, A.-M., Paquette, J.-L., Wiedenbeck, M., Montel, J.-M., and Heinrich, W. (2002) Experimental resetting of the U-Th-Pb systems in monazite. Chemical Geology, 191, 165–181.10.1016/S0009-2541(02)00155-9Search in Google Scholar
Seydoux-Guillaume, A.-M., Montel, J.-M., Bingen, B., Bosse, V., De Parseval, P., Paquette, J.-L., Janots, E., and Wirth, R. (2012) Low-temperature alteration of monazite: Fluid mediated coupled dissolution–precipitation, irradiation damage, and disturbance of the U–Pb and Th–Pb chronometers. Chemical Geology, 330, 140–158.10.1016/j.chemgeo.2012.07.031Search in Google Scholar
Skrzypek, E., Kawakami, T., Hirajima, T., Sakata, S., Hirata, T., and Ikeda, T. (2016) Revisiting the high temperature metamorphic field gradient of the Ryoke Belt (SW Japan): New constraints from the Iwakuni-Yanai area. Lithos, 260, 9–27.10.1016/j.lithos.2016.04.025Search in Google Scholar
Skrzypek, E., Kato, T., Kawakami, T., Sakata, S., Hattori, K., Hirata, T., and Ikeda, T. (2018) Monazite behaviour and time-scale of metamorphic processes along a low-pressure/high-temperature field gradient (Ryoke Belt, SW Japan). Journal of Petrology, 59, 1109–1144.10.1093/petrology/egy056Search in Google Scholar
Spear, F.S. (2010) Monazite–allanite phase relations in metapelites. Chemical Geology, 279, 55–62.10.1016/j.chemgeo.2010.10.004Search in Google 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, 569–586.10.1016/j.gr.2008.01.005Search in Google Scholar
Suzuki, K., Adachi, M., and Nureki, T. (1996) CHIME age dating of monazites from metamorphic rocks and granitic rocks of the Ryoke belt in the Iwakuni area, Southwest Japan. Island Arc, 5, 43–55.10.1111/j.1440-1738.1996.tb00011.xSearch in Google Scholar
Takatsuka, K., Kawakami, T., Skrzypek, E., Sakata, S., Obayashi, H., and Hirata, T. (2018a) Age gap between the intrusion of gneissose granitoids and regional high-temperature metamorphism in the Ryoke belt (Mikawa area), central Japan. Island Arc, 27, e12224.10.1111/iar.12224Search in Google Scholar
Takatsuka, K., Kawakami, T., Skrzypek, E., Sakata, S., Obayashi, H., and Hirata, T. (2018b) Spatiotemporal evolution of magmatic pulses and regional metamorphism during a Cretaceous flare-up event: Constraints from the Ryoke belt (Mikawa area, central Japan). Lithos, 308, 428–445.10.1016/j.lithos.2018.03.018Search in Google Scholar
Taylor, M., and Ewing, R.C. (1978) The crystal structures of the ThSiO4 polymorphs: huttonite and thorite. Acta Crystallographica, B34, 1074–1079.10.1107/S0567740878004951Search in Google Scholar
Taylor, R. J.M., Clark, C., Fitzsimons, I.C.W., 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, 1–17.10.1007/s00410-014-1044-0Search in Google Scholar
Terra, O., Dacheux, N., Clavier, N., Podor, R., and Audubert, F. (2008) Preparation of optimized uranium and thorium bearing brabantite or monazite/brabantite solid solutions. Journal of the American Ceramic Society, 91, 3673–3682.10.1111/j.1551-2916.2008.02678.xSearch in Google Scholar
Teufel, S., and Heinrich, W. (1997) Partial resetting of the UPb isotope system in monazite through hydrothermal experiments: An SEM and UPb isotope study. Chemical Geology, 137, 273–281.10.1016/S0009-2541(96)00161-1Search in Google Scholar
Tomaschek, F., Kennedy, A.K., Villa, I.M., Lagos, M., and Ballhaus, C. (2003) Zircons from Syros, Cyclades, Greece—Recrystallization and mobilization of zircon during high-pressure metamorphism. Journal of Petrology, 44, 1977–2002.10.1093/petrology/egg067Search in Google Scholar
Townsend, K.J., Miller, C.F., D’Andrea, J.L., Ayers, J.C., Harrison, T.M., and Coath, C.D. (2001) Low temperature replacement of monazite in the Ireteba granite, Southern Nevada: Geochronological implications. Chemical Geology, 172, 95–112.10.1016/S0009-2541(00)00238-2Search in Google Scholar
Trail, D. (2018) Redox-controlled dissolution of monazite in fluids and implications for phase stability in the lithosphere. American Mineralogist, 103, 453–461.10.2138/am-2018-6296Search in Google Scholar
Villa, I.M., and Williams, M.L. (2013) Geochronology of metasomatic events. In D.E. Harlov and H. Austrheim, Eds., Metasomatism and the Chemical Transformation of Rock, p. 171–202. Springer.10.1007/978-3-642-28394-9_6Search in Google Scholar
Ward, C.D., McArthur, J.M., and Walsh, J.N. (1992) Rare earth element behaviour during evolution and alteration of the Dartmoor granite, SW England. Journal of Petrology, 33, 785–815.10.1093/petrology/33.4.785Search in Google Scholar
Watson, E.B. (1979) Zircon saturation in felsic liquids: experimental results and applications to trace element geochemistry. Contributions to Mineralogy and Petrology, 70, 407–419.10.1007/BF00371047Search in Google Scholar
Weinberg, R.F., and Hasalová, P. (2015) Water-fluxed melting of the continental crust: A review. Lithos, 212–215, 158–188.10.1016/j.lithos.2014.08.021Search in Google Scholar
Williams, M.L., Jercinovic, M.J., and Terry, M.P. (1999) Age mapping and dating of monazite on the electron microprobe: deconvoluting multistage tectonic histories. Geology, 27, 1023–1026.10.1130/0091-7613(1999)027<1023:AMADOM>2.3.CO;2Search in Google Scholar
Williams, M.L., Jercinovic, M.J., Harlov, D.E., Budzyn, B., and Hetherington, C.J. (2011) Resetting monazite ages during fluid-related alteration. Chemical Geology, 283, 218–225.10.1016/j.chemgeo.2011.01.019Search in Google Scholar
Yuguchi, T., Sasao, E., Ishibashi, M., and Nishiyama, T. (2015) Hydrothermal chloritization processes from biotite in the Toki granite, Central Japan: Temporal variations of of the compositions of hydrothermal fluids associated with chloritization. American Mineralogist, 100, 1134–1152.10.2138/am-2015-5126Search in Google Scholar
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