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Coronas, reaction rims, symplectites and emplacement depth of the Rymmen gabbro, Transscandinavian Igneous Belt, southern Sweden

Published online by Cambridge University Press:  05 July 2018

D. T. Claeson
D. T. Claeson*
Affiliation:
Department of Geology, Earth Sciences Centre, Göteborg University, 413 81 Göteborg, Sweden
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Abstract

Reactions between olivine and plagioclase form kelyphytic corona textures in the Rymmen gabbro, southern Sweden. The coronas surround olivine and consist of enstatite ± amphibole and phlogopite, combined with an outer rim of symplectic intergrowth of green spinel and amphibole. Corona reactions took place in fractures within olivine prior to the formation of chlorite, serpentine, and magnetite in the fractures at cooler conditions. Disequilibrium between olivine and plagioclase has been put forward as an explanation for the corona formation. However, inclusions of plagioclase in olivine show that there is no reaction between these minerals, since no new minerals formed between them. The conclusion drawn is that the most important factor for development of kelyphytic structures in the Rymmen gabbro is contact with a late deuteric fluid in an environment where olivine and plagioclase are close to each other. Temperature estimates for the formation of the kelyphytic coronas in the Rymmen gabbro yield consistent temperatures of around 800 ± 30°C and pressures 6–8 kbar, which indicate emplacement at a depth of 20–30 km in the crust. Late deuteric fluids caused olivine replacement by intergrown orthopyroxene and magnetite, in Fe-Ti oxide-rich rocks only. In these, plagioclase is replaced by symplectite when in contact with ilmenite and magnetite. It is noted that the symplectite minerals have low Ti contents. This suggests that the Fe-Ti oxide was a catalyst for the reaction between plagioclase and late-stage aqueous fluids rather than being a reactant, alternatively that the magnetite/ilmenite was a reactant and Ti was retained in the oxide.

Keywords

kelyphytic coronareaction rimgabbroilmenite-magnetite-plagioclase reactionorthopyroxene-magnetite-pleonaste symplectiteTransscandinavian Igneous Belt
Type
Research Article
Information
Mineralogical Magazine , Volume 62 , Issue 6 , December 1998 , pp. 743 - 757
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1998

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References

Allan, J.F., Sack, R.O. and Batiza, R. (1988) Cr-rich spinels as petrogenetic indicators: MORB-type lavas from the Lamont seamount chain, eastern Pacific. Amer. Mineral., 73, 741–53.Google Scholar
Ambler, E.P. and Ashley, P.M. (1977) Vermicular orthopyroxene-magnetite symplectites from the Wateranga layered mafic intrusion, Queensland, Australia. Lithos, 10, 163–72.CrossRefGoogle Scholar
Ashworth, J.R. (1986) The role of magmatic reaction, diffusion and annealing in the evolution of coronitic microstructure in troctolitic gabbro from Risör, Norway: a discussion. Mineral. Mag., 50, 469–73.CrossRefGoogle Scholar
Ashworth, J.R. and Birdi, J. J. (1990) Diffusion modelling of coronas around olivine in an open system. Geochim. Cosmochim. Acta, 54, 2389–401.CrossRefGoogle Scholar
Ashworth, J.R. and Sheplev, V.S. (1997) Diffusion modelling of metamorphic layered coronas with stability criterion and consideration of affinity. Geochim. Cosmochim. Acta, 61, 3671–89.CrossRefGoogle Scholar
Ashworth, J.R., Birdi, J.J. and Emmet, T.F. (1992) A complex corona between olivine and plagioclase from the Jotun Nappe, Norway, and the diffusion modelling of multimineralic layers. Mineral. Mag., 56, 511–25.CrossRefGoogle Scholar
Barton, M., Sheets, J.M., Lee, W.E. and van Gaans, C. (1991) Occurrence of low-Ca clinopyroxene and the role of deformation in the formation of pyroxene - Fe-Ti oxide symplectites. Contrib. Mineral. Petrol., 108, 181–95.CrossRefGoogle Scholar
Barton, M. and Van Gaans, C. (1988) Formation of orthopyr oxe ne-Fe-Ti oxide symplec ti tes in Precambrian intrusives, Rogaland, southwestern Norway. Amer. Mineral., 73, 1046–59.Google Scholar
Berman, R.G. (1988) Internally-consistent thermodynamic data for stoichiometric minerals in the system Na2O-K2O-CaO-MgO-FeO-Fe2O3-Al2O3-SiO2- TiO2-H2O-CO2 . J. Petrol., 29, 445–522.CrossRefGoogle Scholar
Berman, R.G. (1991) Thermobarometry using multiequilibrium calculations: a new technique with petrologic applications. Canad. Mineral., 29, 833–55.Google Scholar
Burns, L.E. (1985) The Border Ranges ultramafic and mafic complex, south-central Alaska: cumulate fractionates of island-arc volcanics. Canad. J. Earth Sci., 22, 1020–38.CrossRefGoogle Scholar
Carlson, W.D. and Johnson, C.D. (1991) Coronal reaction textures in garnet amphibolites of the Llano Uplift. Amer. Mineral., 76, 756–38.Google Scholar
Claeson, D. and Larson, S.Å. (1996) The Rymmen gabbro, a layered mafic intrusion from the Transscandinavian Igneous Belt, southern Sweden (abstract). GFF, Jubilee Issue, 118, A 12.CrossRefGoogle Scholar
Dasgupta, S., Sengupta, P., Mondal, A. and Fukuoka, M. (1993) Mineral chemistry and reaction textures in metabasites from the Eastern Ghats belt, India and their implications. Mineral. Mag., 57, 113-20.CrossRefGoogle Scholar
Della-Pasqua, F.N., Kamenetsky, V.S., Gasparon, M., Crawford, A.J. and Varne, R. (1995) Al-rich spinel in primitive arc volcanics. Mineral. Petrol., 53, 1–26.CrossRefGoogle Scholar
Fuhrman, M.L. and Lindsley, D.H. (1988) Ternary-feldspar modeling and thermometry. Amer. Mineral., 73, 201–16.Google Scholar
Gaál, G. and Gorbatschev, R. (1987) An Outline of the Precambrian Evolution of the Baltic Shield. Precamb. Res.,, 35, 15–52.CrossRefGoogle Scholar
Ghiorso, M.S. and Sack, R.O. (1991) Fe-Ti oxide geothermometry: thermodynamic formulation and the estimation of intensive variables in silicic magmas. Contrib. Mineral. Petrol., 108, 485–510.CrossRefGoogle Scholar
Gill, J.B. (1981) Orogenic Andesites and Plate Tectonics. Springer-Verlag, p. 204.CrossRefGoogle Scholar
Gorbatschev, R. (1980) The Precambrian development of southern Sweden. Geol. För. Stockh. Förh., 102, 129–36.CrossRefGoogle Scholar
Gorbatschev, R. and Bogdanova, S. (1993) Frontiers in the Baltic Shield. Precamb. Res., 64, 3–21.CrossRefGoogle Scholar
Grant, S.M. (1988) Diffusion models for corona formation in metagabbros from the Western Grenville Province, Canada. Contrib. Mineral. Petrol., 98, 49–63.CrossRefGoogle Scholar
Green, D.H. and Ringwood, A.E. (1967) An experimental investigation of the gabbro to eclogite transformation and its petrological implications. Geochim. Cosmochim. Acta,, 31, 67–833.Google Scholar
Griffin, W.L. (1971) Genesis of Coronas in Anorthosites of the Upper Jotun Nappe, Indre Sogn, Norway. J. Petrol., 12, 219–43.CrossRefGoogle Scholar
Griffin, W.L. and Heier, K.S. (1973) Petrological implications of some corona structures. Lithos, 6, 315–35.CrossRefGoogle Scholar
Hammarstrom, J.M. and Zen, E. (1986) Aluminium in hornblende: An empirical igneous geobarometer. Amer. Mineral., 71, 1297–313.Google Scholar
Holland, T. and Blundy, J. (1994) Non-ideal interactions in calcic amphiboles and their bearing on amphiboleplagioclase thermometry. Contrib. Mineral. Petrol., 116, 433-47.CrossRefGoogle Scholar
Hughes, C.J. (1982) Igneous Petrology, Developments in Petrology 7, Elsevier, p. 258.Google Scholar
Joesten, R. (1986 a) The role of magmatic reaction, diffusion and annealing in the evolution of coronitic microstructure in troctolitic gabbro from Risör, Norway. Mineral. Mag., 50, 441-67.CrossRefGoogle Scholar
Joesten, R. (1986 b) Reply. Mineral. Mag., 50, 474-9.CrossRefGoogle Scholar
Johnson, M.C. and Rutherford, M. J. (1989) Experimental calibration of the aluminium-in-hornblende geobarometer with application to Long Valley caldera (California) volcanic rocks. Geology, 17, 837-41.2.3.CO;2>CrossRefGoogle Scholar
Kamenetsky, V. and Clocchiatti, R. (1996) Primitive magmatism of Mt. Etna: insights from mineralogy and melt inclusions. Earth Planet. Sci. Lett., 140, 553–72.CrossRefGoogle Scholar
Khan, M.A., Jan, M.Q., Windley, B.F., Tarney, J. and Thirlwall, M.F. (1989) The Chilas Mafic-Ultramafic Igneous Complex; The root of the Kohistan Island Arc in the Himalaya of northern Pakistan. Geol. Soc. Amer. Special Paper, 232, 75–94.CrossRefGoogle Scholar
Kogiso, T., Tatsumi, Y. and Nakano, S. (1997) Trace element transport during dehydration processes in the subducted oceanic crust: 1. Experiments and implications for the origin of ocean island basalts. Earth Planet. Sci. Lett., 148, 193–205.CrossRefGoogle Scholar
Mäder, U.K. and Berman, R.G. (1992) Amphibole thermobarometry: a thermodynamic approach. Current Research, Part E, Geological Survey of Canada, Paper 92-1E, p. 393–400.CrossRefGoogle Scholar
Mäder, U.K., Percival, J.A. and Berman, R.G. (1994) Thermobarometry of garnet-clinopyroxene-hornblende granulites from the Kapuskasing structural zone. Canad. J. Earth Sci., 31, 1134-45.CrossRefGoogle Scholar
Mall, A.P. and Sharma, R.S. (1988) Coronas in olivine metagabbros from the Proterozoic Chotanagpur terrain at Mathurapur, Bihar, India. Lithos, 21, 291–300.CrossRefGoogle Scholar
Mongkoltip, P. and Ashworth, J.R. (1983) Quantitative Estimation of an Open-system Symplectite-forming Reaction: Restricted Diffusion of Al and Si in Coronas around Olivine. J. Petrol., 24, 635-61.CrossRefGoogle Scholar
Natland, J.H. (1989) Partial melting of a lithologically heterogenous mantle: inferences from crystallization histories of magnesian abyssal tholeiites from the Siqueiros Fracture Zone. In Magmatism in Ocean Basins (Saunders, A.D. and Norry, M.J., eds.), Geol. Soc. London Spec. Publ. 42, 41–70.Google Scholar
Newton, R.C. (1983) Geobarometry of high-grade metamorphic rocks. Amer. J. Sci., 283-A, 1–28.Google Scholar
Passchier, C.W. and Trouw, R.A.J. (1996) Microtectonics. Springer-Verlag, 190–2.Google Scholar
Powell, R. (1978) The thermodynamics of pyroxene geotherms. Phil. Trans. R. Soc. Lond. A, 288, 457–69.Google Scholar
Rivers, T. and Mengel, F.C. (1988) Contrasting assemblages and petrogenetic evolution of corona and noncorona gabbros in the Grenville Province of western Labrador. Canad. J. Earth Sci., 25, 1629–48.CrossRefGoogle Scholar
Selverstone, J. and Stern, C.R. (1983) Petrochemistry and recrystallization history of granulite xenoliths from the Pali-Aike volcanic field, Chile. Amer. Mineral., 68, 1102-12.Google Scholar
Spear, F.S. (1993) Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths. Monograph Series, Mineral. Soc. Amer., p. 8.Google Scholar
Tindle, A.G. and Webb, P.C. (1994) PROBE-AMPH - a spreadsheet program to classify microprobe-derived amphibole analyses. Computers & Geosci., 20, 1201–28.CrossRefGoogle Scholar
Trolliard, G., Boudeulle, M., Lardeaux, J.M. and Potdevin, J. L. (1988) Contrasted Modes of Amphibole Development in Coronitic Metagabbros: a TEM Investigation. Phys. Chem. Minerals, 16, 130–9.CrossRefGoogle Scholar
Turner, S.P. and Stüwe, K. (1992) Low-pressure corona textures between olivine and plagioclase in unmetamorphosed gabbros from Black Hill, South Australia. Mineral. Mag., 56, 503–9.CrossRefGoogle Scholar
Turnock, A.C. and Eugster, H.P. (1962) Fe-Al Oxides: Phase Relationships below 1,000°C. J. Petrol., 3, 533–65.CrossRefGoogle Scholar
Wells, P.R.A. (1977) Pyroxene Thermometry in Simple and Complex Systems. Contrib. Mineral. Petrol., 62, 129–39.CrossRefGoogle Scholar
White, R.W. and Clarke, G.L. (1997) The Role of Deformation in Aiding Recrystallization : an Example from a High-pressure Shear Zone, Central Australia. J. Petrol., 38, 1307–29.CrossRefGoogle Scholar
Whitney, P.R. and McLelland, J.M. (1973) Origin of Coronas in Metagabbros of the Adirondack Mts., N. Y. Contrib. Mineral. Petrol., 39, 81–98.CrossRefGoogle Scholar
Whitney, P.R. and McLelland, J.M. (1983) Origin of Biotite-Hornblende-Garnet Coronas Between Oxides and Plagioclase in Olivine Metagabbros, Adirondack Region, New York. Contrib. Mineral. Petrol., 82, 34–41.CrossRefGoogle Scholar
Wood, B.J. and Banno, S. (1973) Garnet-orthopyroxene and orthopyroxene-clinopyroxene relationships in simple and complex systems. Contrib. Mineral. Petrol., 42, 109–24.CrossRefGoogle Scholar
Zeck, H.P., Shenouda, H.H., Rønsbo, J.G. and Poorter, R.P.E. (1982) Hypersthene-ilmenite(/magnetite) symplectites in coronitic olivine-gabbronorit es. Lithos, 15, 173–82.CrossRefGoogle Scholar