Abstract
Tourmaline-out isograd formed by the breakdown of tourmaline is defined in the upper amphibolite-facies metapelites in the Yanai area, Ryoke metamorphic belt, SW Japan. The rim composition of tourmaline progressively becomes aluminous with ascending metamorphic grade, and the chemical zoning of tourmaline is controlled by X□AlNa–1Mg–1 and MgTiYAl–2 vectors in low- to medium-grade zones where muscovite is stable, whereas it is controlled by Mg(OH)YAl–1O–1, CaMgOX□–1 YAl–1(OH)–1 and MgTiYAl–2 vectors in further higher–grade, muscovite-unstable zones. The size of tourmaline increases drastically where breakdown of muscovite+quartz takes place, probably due to the growth of tourmaline during breakdown of muscovite. On the high-temperature side of the tourmaline-out isograd, depletion of whole-rock boron is observed. Escape of boron-bearing melt or the fluid evolved from the melt during its crystallization probably caused this depletion, although locally trapped, boron-bearing melt or fluid formed irregularly shaped tourmaline and dumortierite during retrograde metamorphism.
Similar content being viewed by others
References
Acosta A, Pereira MD, Shaw DM (2000) Influence of volatiles in the generation of crustal anatectic melts. J Geochem Explor 69/70:339–342
Acosta A, Pereira MD, Shaw DM, London D (2001) Contrasting behavior of boron during crustal anatexis. Lithos 56:15–31
Banno S, Nakajima T (1992) Metamorphic belts of Japanese Islands. Ann Rev Earth Planet Sci 20:159–179
Benard F, Moutou P, Pichavant M (1985) Phase relations of tourmaline leucogranites and the significance of tourmaline in silicic magmas. J Geol 93:271–291
Brown M (1973) The definition of metatexis, diatexis and migmatite. Proc Geol Assoc 84:371–382
Brown M (1998) Unpairing metamorphic belts: P–T paths and a tectonic model for the Ryoke Belt, southwest Japan. J Metamorph Geol 16:3–22
Dingwell DB, Knoche R, Webb SL, Pichavant M (1992) The effect of B2O3 on the viscosity of haplogranitic liquids. Am Mineral 77:457–461
Ellis DJ, Obata M (1992) Migmatite and melt segregation at Cooma, New South Wales. Trans R Soc Edinburgh Earth Sci 83:95–106
Goto A, Tatsumi Y (1994) Quantitative analysis of rock samples by an X-ray fluorescence spectrometer (I). Rigaku J 11:40–59
Hawthorne FC (1996) Structural mechanisms for light-element variations in tourmaline. Can Mineral 34:123–132
Hawthorne FC, Henry DJ (1999) Classification of the minerals of the tourmaline group. Eur J Mineral 11:201–215
Henry DJ, Dutrow BL (1990) Ca substitution in Li-poor aluminous tourmaline. Can Mineral 28:111–124
Henry DJ, Dutrow BL (1992) Tourmaline in a low grade clastic metasedimentary rock: an example of the petrogenetic potential of tourmaline. Contrib Mineral Petrol 112:203–218
Henry DJ, Dutrow BL (1996) Metamorphic tourmaline and its petrologic applications, In: Grew ES, Anovitz LM (eds) Boron mineralogy, petrology and geochemistry. Rev Mineral 33:503–557
Henry DJ, Guidotti CV (1985) Tourmaline as a petrogenetic indicator mineral: an example from the staurolite-grade metapelites of NW Maine. Am Mineral 70:1–15
Higashimoto S, Nureki T, Hara I, Tsukuda E, Nakajima T (1983) Geology of the Iwakuni district. Quadrangle series, scale 1:50,000 (in Japanese with English abstract). Geological Survey of Japan, pp79
Higgins MD, Truscott MG, Shaw DM, Bergeron M, Buffet GH, Copley JRD, Prestwick WV (1984) Prompt-gamma neutron activation analysis at McMaster nuclear reactor. Atomkern-energie Kerntech 44:690–697
Hirajima T, Banno S (1991) Electron-microprobe analysis of rock-forming minerals with Kevex-delta IV quantum detector (in Japanese). Hitachi Sci Instrument News 34:2–7
Holtz F, Johannes W (1991) Effect of tourmaline on melt fraction and composition of first melts in quartzofeldspathic gneiss. Eur J Mineral 3:527–536
Ikeda T (1991) Heterogeneous biotite from Ryoke metamorphic rocks in the Yanai district, southwest Japan. J Geol Soc Jpn 97:537–547
Ikeda T (1993) Compositional zoning patterns of garnet during prograde metamorphism from the Yanai district, Ryoke metamorphic belt, southwest Japan. Lithos 30:109–121
Ikeda T (1998a) Progressive sequence of reactions of the Ryoke metamorphism in the Yanai district, southwest Japan: the formation of cordierite. J Metamorph Geol 16:39–52
Ikeda T (1998b) Phase equilibria and the pressure–temperature path of the highest-grade Ryoke metamorphic rocks in the Yanai district, SW Japan. Contrib Mineral Petrol 132:321–335
Ikeda T (2002) Regional occurrence of orthopyroxene-bearing basic rocks in the Yanai district, SW Japan: evidence for granulite-facies Ryoke metamorphism. Island Arc 11:185–192
Kawakami T (2001a) Boron depletion controlled by the breakdown of tourmaline in the migmatite zone of the Aoyama area, Ryoke metamorphic belt, SW Japan. Can Mineral 39:1529–1546
Kawakami T (2001b) Tourmaline breakdown in the migmatite zone of the Ryoke metamorphic belt, SW Japan. J Metamorph Geol 19:61–75
Kawakami T (2002) Magmatic andalusite from the migmatite zone of the Aoyama area, Ryoke metamorphic belt, SW Japan, and its importance in constructing the P–T path. J Mineral Petrol Sci 97:241–253
Kretz R (1983) Symbols for rock forming minerals. Am Mineral 68:277–279
Leeman WP, Sisson VB, Reid MR (1992) Boron geochemistry of the lower crust: evidence from granulite terranes and deep crustal xenoliths. Geochim Cosmochim Acta 56:775–788
London D, Manning DAC (1995) Chemical variation and significance of tourmaline from Southwest England. Econ Geol 90:495–519
Lonker SW (1988) An occurrence of grandidierite, kornerupine, and tourmaline in southeastern Ontario, Canada. Contrib Mineral Petrol 98:502–516
Michailidis K, Kassoli-Fournaraki A (1994) Tourmaline concentrations in migmatitic metasedimentary rocks of the Riziana and Kolchiko areas in Maceodnia, Northern Greece. Eur J Mineral 6:557–569
Moran AE, Sisson VB, Leeman WP (1992) Boron depletion during progressive metamorphism: implications for subduction processes. Earth Planet Sci Lett 111:331–349
Mori T, Kanehira K (1984) X-ray energy spectrometry for electron-probe analysis. J Geol Soc Jpn 90:49–52
Nakajima T (1994) The Ryoke plutonometamorphic belt: crustal section of the Cretaceous Eurasian continental margin. Lithos 33:51–66
Nakajima T, Shirahase T, Shibata K (1990) Along-arc lateral variation of Rb–Sr and K–Ar ages of Cretaceous granitic rocks in Southwest Japan. Contrib Mineral Petrol 104:381–389
Nakano T, Nakamura E (2001) Boron isotope geochemistry of metasedimentary rocks and tourmalines in the subduction-zone metamorphism. Phys Earth Planet Interiors 127:233–252
Nureki T (1974) Contact metamorphism in the So-o district, Yamaguchi Prefecture, Japan, with special reference to the occurrence of sillimanite. Mem Geol Soc Jpn 11:251–281
Okudaira T (1996) Low-pressure metamorphism in the Ryoke metamorphic belt in the Yanai district, southwest Japan. J Sci Hiroshima Univ Ser C 10:509–518
Okudaira T, Hara I, Sakurai Y, Hayasaka Y (1993) Tectono-metamorphic processes of the Ryoke belt in the Iwakuni-Yanai district, southwest Japan. Mem Geol Soc Jpn 42:91–120
Ono A (1977) Petrologic study of the Ryoke metamorphic rocks in the Takato-Shiojiri area, Central Japan (in Japanese with English abstract). J Mineral Petrol Econ Geol 72:453–468
Pereira MD, Shaw DM (1997) Behavior of boron in the generation of an anatectic complex: the Pena Negra complex, central Spain. Lithos 40:179–188
Pichavant M (1981) An experimental study of the effect of boron on a water saturated haplogranite at 1 kbar vapour pressure. Contrib Mineral Petrol 76:430–439
Shaw DM, Smith PL (1991) Concentrations of B, Sm, Gd, and H in 24 reference materials. Geostand Newslett 15:58–66
Sperlich R, Giere R, Frey M (1996) Evolution of compositional polarity and zoning in tourmaline during prograde metamorphism of sedimentary rocks in the Swiss Central Alps. Am Mineral 81:1222–1236
Suzuki K, Adachi M (1998) Denudation history of the high T/P Ryoke metamorphic belt, southwest Japan: constraints from CHIME monazite ages of gneisses and granitoids. J Metamorph Geol 16:23–37
Suzuki K, Adachi M, Kajizuka I (1994) Electron microprobe observations of Pb diffusion in metamorphosed detrital monazites. Earth Planet Sci Lett 128:391–405
Suzuki K, Adachi M, 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
Takagi H, Nagahama H (1987) The Ryoke Belt in the Hiki Hills, northeastern marginal area of the Kanto Mountains (in Japanese with English abstract). J Geol Soc Jpn 93:201–215
v. Goerne G, Franz G, Robert JL (1999a) Upper thermal stability of tourmaline + quartz in the system MgO–Al2O3–SiO2–B2O3–H2O and Na2O–MgO–Al2O3–SiO2–B2O3–H2O–HCl in hydrothermal solutions and siliceous melts. Can Mineral 37:1025–1039
v. Goerne G, Franz G, Wirth R (1999b) Synthesis of large dravite crystals by the chamber method at 600 °C, 200 MPa. Eur J Mineral 11:1061–1078
Wilke M, Nabelek PI, Glascock MD (2002) B and Li in Proterozoic metapelites from the Black Hills, U.S.A.: implications for the origin of leucogranitic magmas. Am Mineral 87:491–500
Wolf MB, London D (1997) Boron in granitic magmas: stability of tourmaline in equilibrium with biotite and cordierite. Contrib Mineral Petrol 130:12–30
Acknowledgements
T. Kawakami is grateful to M. Obata and T. Hirajima for discussion and improvements to an earlier version of the manuscript. He also thanks H. Tsutsumi and K. Yoshida for preparation of thin sections. Thanks are also due to M. Brown and D. London for constructive reviews, and T.L. Grove for editorial work. This study was financially supported by the JSPS Research Fellowship for Young Scientists to T. Kawakami, and Grants-in-Aid for Scientific Research (C) (14540451) from the Japan Society for the Promotion of Science to T. Ikeda.
Author information
Authors and Affiliations
Corresponding author
Additional information
Editorial responsibility: T.L. Grove
Rights and permissions
About this article
Cite this article
Kawakami, T., Ikeda, T. Boron in metapelites controlled by the breakdown of tourmaline and retrograde formation of borosilicates in the Yanai area, Ryoke metamorphic belt, SW Japan. Contrib Mineral Petrol 145, 131–150 (2003). https://doi.org/10.1007/s00410-002-0437-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00410-002-0437-7