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Evolution of a metamorphic fluid during progressive metamorphism in the Joroinen-Sulkava area, southeastern Finland, as indicated by fluid inclusions

Published online by Cambridge University Press:  05 July 2018

Matti Poutiainen
Matti Poutiainen*
Affiliation:
Department of Geology, University of Helsinki, Finland
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Abstract

Fluid inclusions in the progressively metamorphosed rocks of the Joroinen-Sulkava area, located in the south-eastern end of the Raahe-Ladoga zone near the Archaean-Proterozoic boundary, southeastern Finland, fall into four main categories: (1) H2O-rich, (2) CO2-rich, (3) mixed H2O-CO2 and (4) CH4-N2 inclusions. The samples were collected from quartz veins associated with different deformation phases (D2-D4) and from metapelites. The progressive stage of metamorphism took place mainly during the D2 deformation. The age of metamorphism and D2 deformation becomes younger with increase in metamorphic grade from amphibolite to granulite facies.

Regional distribution of the different fluid types indicates a change in fluid regime from H2O to CO2-dominant during the progressive stage of the metamorphism. H2O entered preferentially into the anatectic melt. The possibility of CO2 infiltration from deeper crust can not be excluded, because granulite facies rocks occur most probably below the lower grade zones. A zone enriched in CH4-N2 fluids is located near the lineament zones caused by the D3 deformation. This fluid type dominates the Au-bearing D2–D3 quartz lenses in the K-feldspar-sillimanite zone. Density data of early CO2 inclusions in combination with estimates of metamorphic temperatures (645–750°C) in the different metamorphic zones indicate a pressure range of 3.0–4.5 kbar, which is consistent with data derived from mineral geobarometry. The diversity of fluid types encountered in the D2–D4 quartz veins are a result of the passage of different fluids through veins at different times without re-equilibrating with the wall rocks. However, it is supposed that the CH4-N2 fluid is derived from a CO2-rich fluid with XCH4 ⩽ 0.4 by re-equilibration during its passage through the rocks.

Keywords

metamorphic fluidfluid inclusionsprogressive metamorphismFinland
Type
Magmatic/metamorphic environment
Information
Mineralogical Magazine , Volume 54 , Issue 375 , June 1990 , pp. 207 - 218
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1990

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References

Burruss, R. C. (1981) Analysis of phase equilibria in C-O-H-S fluid inclusions. Mineral. Assoc. Canada Short Course Handbook, 6, 3-74.Google Scholar
Fyfe, W. S., Price, N. J. and Thompson, A. B. (1978) Fluids in the Earth's Crust. Elsevier, Amsterdam, 383 pp.Google Scholar
Haudenschild, U. (1988) K-Ar age determination on biotite and muscovite in the Pihtipudas-Iisalmi and Joroinen areas, eastern Finland. Geol. Surv. Finland Bull. 343, 33-50.Google Scholar
Holdoway, M. J. and Lee, S. M. (1977) Fe-Mg cordierite stability in high-grade pelitic rocks based on experimental, theoretical and natural observations. Contrib. Mineral. Petrol. 63, 175-98.CrossRefGoogle Scholar
Hollister, L. S. (1988) On the origin of CO2-rich fluid inclusions in migmatites. J. Metamorphic Geol. 6, 467-74.CrossRefGoogle Scholar
Hollister, L. S., Burruss, R. C., Henry, D. L. and Hendel, E. M. (1979) Physical conditions during uplift of metamorphic terranes as recorded by fluid inclusions. Bull. Mineral. 102, 562-8.Google Scholar
Hölttä, P., Kilpeläinen, T., Korsman, K., Paavola, J. and Pajunen, M. (1988) Biotiitti tektonismetamorfisen kehityksen selvittäimisessät (in Finnish). Ann. Univ. Turkuensis, Ser. C, 68, %19.Google Scholar
Kerrick, D. M. (1972) Experimental determination of muscovite + quartz stability with PH2O < Ptotal . Amer. J. Sci. 272, 946-58.CrossRefGoogle Scholar
Kilpeläinen, T. (1988) Evolution of deformation and metamorphism as a function of time in the Rantasalmi- Sulkava area, southeastern Finland. Geol. Surv. Finland Bull. 343, 77-87.Google Scholar
Konnerup-Madsen, J. (1977) Composition and microthermometry of fluid inclusions in the Kleivan Granite, south Norway. Amer. J. Sci. 277, 673-96.CrossRefGoogle Scholar
Korsman, K. (1977) Progressive metamorphism of the metapelites in the Rantasalmi-Sulkava area, south-eastern Finland. Geol. Surv. Finland Bull. 290, 82 pp.Google Scholar
Korsman, K. and Kilpeläinen, T. (1986) Relationship between zonal metamorphism and deformation in the Rantasalmi-Sulkava area, southeastern Finland. Ibid. 339, 33-42.Google Scholar
Korsman, K., Hölttä, P., Hautala, T. and Wasenius, P. (1984) Metamorphism as an indicator of evolution and structure of the crust in eastern Finland. Ibid. 328, 40 pp.Google Scholar
Korsman, K., Niemelä, R. and Wasenius, P. (1988) Multistage evolution of the Proterozoic crust in the Savo schist belt, eastern Finland. Ibid. 343, 89-96.Google Scholar
Lamb, W. M., Valley, J. W. and Brown, P. E. (1987) Post-metamorphic CO2-rich fluid inclusions in granulites. Contrib. Mineral. Petrol. 96, 485-95.CrossRefGoogle Scholar
Leroy, J. (1979) Contribution a l'etalonnage de la pression interne des inclusions fluides lors de leur decrepitation. Bull. Mineral. 102, 584-93.Google Scholar
Makkonen, H. and Ekdahl, E. (1988) Petrology and structure of the early Proterozoic Pirifft gold deposit in southeastern Finland. Bull. Geol. Soc. Finland, 60, Part 1, 55–66.CrossRefGoogle Scholar
Naumov, V. B., Balistky, V. S. and Khetchikov, L. N. (1966) Correlation of temperatures of formation, homogenization and decrepitation of gas-fluid inclusions. Dokl. Acad. Sci. USSR, Earth Sci. Sect. 171, 146-8.Google Scholar
Newton, R. C. (1986) Fluids of granulite facies metamorphism. In Fluid-rock interactions during metamorphism (Walther, J. W. and Woods, B. J., eds) Advances in Physical Geochemistry, Springer, 5, 36–59.CrossRefGoogle Scholar
Nironen, M. (1989) Emplacement and structural setting of granitoids in the early Proterozoic Tampere and Savo Schist Belts, Finland—implications for contrasting crustal evolution. Geol. Surv. Finland Bull. 346, 83 pp.Google Scholar
Pecher, A. (1981) Experimental decrepitation and reequilibration of fluid inclusions in synthetic quartz. Tectonophys. 78, 567-83.CrossRefGoogle Scholar
Potter, R. W., Clynne, M. A. and Brown, D. L. (1978) Freezing point depression of aqueous sodium chloride solutions. Econ. Geol. 73, 284-5.CrossRefGoogle Scholar
Roedder, E. (1984) Fluid inclusions. Reviews in Mineralogy, 12. Mineral. Soc. America. 644 pp.Google Scholar
Rudnick, R. L., Ashwal, L. D. and Henry, D. J. (1984) Fluid inclusions in high-grade gneisses of the Kapuskasing structural zone, Ontario: Metamorphic fluids and uplift/erosion path. Contrib. Mineral. Petrol. 87, 399-406.CrossRefGoogle Scholar
Salje, E. (1986) Heat capacities and entropies of andalusite and sillimanite: the influence of fibrolitization on the phase diagrams of the Al2SiO5 polymorphs. Am. Mineral. 71, 1366-71.Google Scholar
Schreurs, J. (1984) The amphibolite-granulite facies transition in West Uusimaa, SW Finland. A fluid inclusion study. J. Metamorphic Geol. 2, 327-41.CrossRefGoogle Scholar
Schwartz, M. O. (1989) Determining phase volumes of mixed CO2-H2O inclusions using microthermometric measurements. Mineral. Deposita, 24, 43-7.CrossRefGoogle Scholar
Selverstone, J., Spear, F., Franz, G. and Morteani, G. (1984) High-pressure metamorphism in the SW Tavern Window, Austria: P-Tpath from hornblendekyanite-staurolite schists. J. Petrol. 25, 501-31.CrossRefGoogle Scholar
Shepherd, T. J., Rankin, A. H. and Alderton, D. H. M. (1985) A practical guide to fluid inclusion studies. Blackie. 239 pp.Google Scholar
Stout, M. Z., Crawford, M. L. and Ghent, E. D. (1986) Pressure-temperature and evolution of fluid compositions of Al2SiO5-bearing rocks, Mica Creek, B.C., in light of fluid inclusion data and mineral equilibria. Contrib. Mineral. Petrol. 92, 236-47.CrossRefGoogle Scholar
Thompson, A. B. (1983) Fluid-absent metamorphism. J. Geol. Soc. London, 140, 533-48.CrossRefGoogle Scholar
Touret, J. (1971) The granulite facies in Southern Norway I. The mineral association; II: The fluid inclusions. Lithos, 4, 239-49 and 423-36.CrossRefGoogle Scholar
Touret, J. (1972) Le facies granulite en Norvege meridionale et les inclusions fluides: paragneiss el quartzites. Sci. de la Terre, France, 17, 17-93.Google Scholar
Touret, J. (1977) The significance of fluid inclusions in metamorphic rocks. In Thermodynamics in Geology (Frazer, D. G., ed.) D. Reidel Publ. Co., Dordrecht, The Netherlands, 203-27.CrossRefGoogle Scholar
Touret, J. (1981) Fluid inclusions in high grade metamorphic rocks. Mineral. Assoc. Canada Short Course Handbook, 6, 182-208.Google Scholar
Touret, J. and Bottinga, Y. (1979) Equation of state of CO2; application to carbonic inclusions. Bull. Mineral. 102, 577-83.Google Scholar
Touret, J. and Dietvorst, P. (1983) Fluid inclusions in highgrade anatectic metamorphites. J. Geol. Soc. London, 140, 635-49.CrossRefGoogle Scholar
Vaasjoki, M. and Sakko, M. (1988) The evolution of the Raahe-Ladoga zone in Finland: Isotopic constraints. Geol. Surv. Finland Bull. 343, 7-32.Google Scholar
Van den Kerkhof, A. M. (1988) The system CO2-CH4-N2 in fluid inclusions: Theoretical modelling and geological applications. Free University Press, Amsterdam. 206 pp.Google Scholar
Vry, J. K. and Brown, P. E. (1986) Fluid inclusions in Archaean granulites—Pikwitonei domain, Manitoba. Geol. Soc. Canada, 11, 140.Google Scholar
Walther, J. W. and Woods, B. J. eds. (1986) Fluid-rock interactions during metamorphism. Advances in Physical Geochemistry, Springer, 5, 218 pp.CrossRefGoogle Scholar
Winkler, H. G. F. (1979) Petrogenesis of metamorphic rocks. 5th ed., Springer, New York. 348 pp.Google Scholar
Yardley, B. W. D. (1986) Fluid migration and veining in the Connemara Schists, Ireland. In Fluid-rock interactions during metamorphism (Walther, J. W. and Wood, B. J., eds.) Advances in Physical Geochemistry, Springer, 5, 10–31.Google Scholar