View More View Less
  • 1 Institute for Geochemical Research, Hungarian Academy of Sciences, H-1112, Budapest, Budaörsi út 45, Hungary
  • 2 Institut de Minéralogie et Géochimie, Université de Lausanne, L'Anthropole, CH-1015, Lausanne, Switzerland
  • 3 Department of Geological Sciences, University of Vienna, Althanstr. 14, 1090, Vienna, Austria
Restricted access

Abstract

The ophiolitic rocks of the easternmost Penninic unit, the Kõszeg-Rechnitz series, were analyzed for their H, C and O stable isotope compositions. Serpentinite, gabbro, blueschist, talc deposits, ophicarbonates, as well as calcite and inclusion fluids from quartz segregation veins were analyzed in order to determine the effects of different metamorphic events on the stable isotope compositions.

The oxygen isotope compositions have a wide range depending on rock type and locality. Gabbro and serpentinite of Bienenhütte (Bernstein Window) have preserved mantle-like δ 18O values (5.9 to 6.3‰; all values are in ‰ relative to V-SMOW), whereas the serpentinite of Glashütten and Rumpersdorf (Kõszeg-Rechnitz Window) and the silicate minerals of the ophicarbonate rocks show a strong 18O-enrichment (up to 16.2‰). The 18O-enrichment may have been induced by low-temperature serpentinization or interaction with 18O-rich fluids that had been in equilibrium with sedimentary rocks. Contrary to the O isotope compositions, the H isotope compositions seem to be homogeneous in the entire series, with D values of −63 ± 7‰. Only some serpentinite rocks were depleted in D (down to −106‰), usually regarded as a result of interaction with meteoric water infiltrating during late-stage metamorphism. The meteoric water infiltration was rather limited, as even samples taken directly from slickensides within serpentinite bodies preserved isotopic compositions close to those of the bulk series. H and O isotope compositions of fluids mobilized in the metasedimentary rocks of the Penninic unit during the main metamorphic stage were determined by analyzing inclusion fluids and calcites in quartz-carbonate veins. The isotope compositions indicate interaction between these fluids and the ophiolite series, although relative deuterium enrichment has been preserved in the ophiolitic rocks.

The strong D-enrichment characteristic for oceanic crust that has experienced high-temperature interaction with seawater was not detected. However, the H isotope compositions obtained for the Kõszeg-Rechnitz series indicate that subduction of the Penninic oceanic crust and the associated devolatilization may have been potentially responsible for mantle metasomatism, resulting in H isotope compositions of about −40‰, similar to the range determined from mantle-derived amphibole megacrysts (Demény et al. 2005). To conclude, the present dataset is discussed in the light of earlier studies on the formation of the Sopron leucophyllite.

  • Alt, J.C. 2003: Stable isotopic composition of upper oceanic crust formed at a fast spreading ridge, ODP Site 801. — Geochemistry Geophysics Geosystems, 4, Art. No. 8908.

    • Search Google Scholar
    • Export Citation
  • E. Bali Cs. Szabó O. Vaselli K. Török 2002 Significance of silicate melt pockets in upper mantle xenoliths from the Bakony-Balaton Highland Volcanic Field, Western Hungary Lithos 61 79 102.

    • Search Google Scholar
    • Export Citation
  • M. Barbieri U. Masi L. Tolomeo 1979 Stable isotope evidence for a marine origin of ophicalcites from the North-Central Apennines (Italy) Marine Geology 30 193 204.

    • Search Google Scholar
    • Export Citation
  • J.D. Barnes J. Selverstone Z.D. Sharp 2004 Interactions between serpentinite devolatilization, metasomatism and strike-slip strain localization during deep-crustal shearing in the Eastern Alps Journal of Metamorphic Geology 22/4 283 300.

    • Search Google Scholar
    • Export Citation
  • D.M. Christie I.S.E. Carmichael C.H. Langmuir 1986 Oxidation states of mid-ocean ridge basalt glasses Earth Planet. Sci. Lett. 79 397 411.

    • Search Google Scholar
    • Export Citation
  • A. Demény 1990 Ásványtani, geokémiai és stabilizotóp-vizsgálatok a hazai Penninikum kōzeteiben: A Kōszeg-rohonci-sorozat és a Tauern-ablak összevetése (Mineralogical, geochemical and stable isotope investigations in the Penninic rocks of Hungary: A comparison of the Kōszeg-Rechnitz Series and the Tauern Window) Dr. univ. thesis, Eötvös Loránd University Budapest.

    • Search Google Scholar
    • Export Citation
  • A. Demény G. Nagy 2002 Comments on the paper “Multiple fluid migration events in the Sopron Gneisses during the Alpine high-pressure metamorphism, as recorded by bulk-rock and mineral chemistry and fluid inclusions” by Kálmán Török (N.Jb. Miner. Abh., 2001, vol. 177, 1–36) N.Jb. Miner. Abh. 178 93 98.

    • Search Google Scholar
    • Export Citation
  • A. Demény Z.D. Sharp H.-R. Pfeifer 1997 Mg-metasomatism and formation conditions of Mgchlorite-muscovite-quartzphyllites (leucophyllites) of the Eastern Alps (W. Hungary) and their relations to Alpine whiteschists Contributions to Mineralogy and Petrology 128 247 260.

    • Search Google Scholar
    • Export Citation
  • A. Demény T.W. Vennemann E. Hegner G. Nagy J.A. Milton A. Embey-Isztin Z. Homonnay 2004 Trace element and C-O-Sr-Nd isotope evidence for subduction-related carbonate-silicate melts in mantle xenoliths (Pannonian Basin, Hungary) Lithos 75 89 113.

    • Search Google Scholar
    • Export Citation
  • A. Demény T.W. Vennemann Z. Homonnay A. Milton A. Embey-Isztin G. Nagy 2005 Origin of amphibole megacrysts in the Plio-Pleistocene basalts of the Carpathian-Pannonian Region Geologica Carpathica 56/2 179 189.

    • Search Google Scholar
    • Export Citation
  • T. Driesner 1993 Aspects of petrological, structural and stable isotope geochemical evolution of ophicarbonate breccias from ocean floor to subduction and uplift: An example from Chatillon, Middle Aosta Valley, Italian Alps Schweiz. Mineral. Petrogr. Mitt. 73 69 84.

    • Search Google Scholar
    • Export Citation
  • A. Dudko M.T. Younes 1990 Alpine plastic deformation in the Kōszeg Mountains (Hungary) Földtani Közlöny 120 69 82.

  • I. Dunkl A. Demény 1997 Exhumation of the Rechnitz Window at the border of Eastern Alps and Pannonian basin during Neogene extension Tectonophysics 272 197 211.

    • Search Google Scholar
    • Export Citation
  • Friedman, I., J.R. O'Neil 1977: Compilation of stable isotope fractionation factors of geochemical interest. — In: Data of Geochemistry 6th, Geol. Surv. Prof. Paper 440-KK., p. 12.

    • Search Google Scholar
    • Export Citation
  • G.L. Früh-Green H. Weissert D. Bernoulli 1990 A multiple fluid history recorded in Alpine ophiolites J. Geol. Soc. London 147 959 970.

    • Search Google Scholar
    • Export Citation
  • G. Früh-Green D.S. Kelley J.A. Karson D.K. Blackman C. Boschi B.E. John T. Schroeder D.K. Ross MARVEL cruise participants 2001 Hydrothermal alteration, serpentinization and carbonate precipitation at the Lost City vent field (30°N MAR) Eos, Trans. Am. Geophys. Union 82 F1101.

    • Search Google Scholar
    • Export Citation
  • C.M. Graham R.S. Harmon S.M.F. Sheppard 1984 Experimental hydrogen isotope studies: Hydrogen isotope exchange between amphibole and water Amer. Mineral. 69 128 138.

    • Search Google Scholar
    • Export Citation
  • C.M. Graham V. J.A H. R.S 1987 Experimental study of hydrogen-isotope exchange between aluminous chlorite and water and of hydrogen diffusion in chlorite Amer. Mineral. 72 566 579.

    • Search Google Scholar
    • Export Citation
  • J. Hoefs 1987 Stable Isotope Geochemistry Third edition Springer-Verlag Berlin.

  • G. Hoinkes F. Koller G. Rantitsch E. Dachs V. Höck F. Neubauer R. Schuster 1999 Alpine metamorphism of the Eastern Alps Schweiz. Mineral. Petrogr. Mitt. 79 155 181.

    • Search Google Scholar
    • Export Citation
  • M. Javoy S. Fourcade C.J. Allegre 1970 Graphical method for examination of 18O/16O fractionations in silicate rocks Earth and Planetary Science Letters 10 12 16.

    • Search Google Scholar
    • Export Citation
  • S. Kasemann A. Meixner A. Rocholl T. Vennemann A. Schmitt M. Wiedenbeck 2001 Boron and oxygen isotope composition of certified reference materials NIST SRM 610/612, and reference materials JB-2G and JR-2G Geostandards Newsletter 25 405 416.

    • Search Google Scholar
    • Export Citation
  • F. Koller A. Pahr 1980 The Penninic ophiolites on the eastern end of the Alps Ofioliti 5 65 72.

  • F. Koller 1985 Petrologie und Geochemie der Ophiolite des Penninikums am Alpenostrand Jahrbuch der Geologischen Bundesanstalt, Wien 128 83 150.

    • Search Google Scholar
    • Export Citation
  • I. Kubovics 1983 Petrological characteristics and genetic features of the crossitite from Western Hungary Földtani Közlöny 113 207 224.

    • Search Google Scholar
    • Export Citation
  • Kyser, T.K. 1986: Stable isotope variations in the mantle. — In: Valley, J.W., H.P. Jr. Taylor, J.R. O'Neil (eds): Stable isotopes in high temperature geological processes. — Reviews in Mineralogy, Mineralogical Society of America, 16, pp. 141164.

    • Search Google Scholar
    • Export Citation
  • Y. Lagabrielle M. Lemoine 1997 Alpine, Corsican and Apennine ophiolites: the slow-spreading ridge model. Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science 325 909 920.

    • Search Google Scholar
    • Export Citation
  • Gy. Lelkes-Felvári 1982 A contribution to the knowledge of the Alpine metamorphism in the Köszeg-Vashegy area (Western Hungary) Neues Jahrbuch Geol. Paläont. Mh. 5 297 305.

    • Search Google Scholar
    • Export Citation
  • M. Lemoine M. Bourbon P.-Ch. de Graciansky R. Létolle 1983 Isotopes du carbone et de l'oxygéne de calcaires associés a des ophiolites (Alpes Occidentales, Corse, Apennin): indices possibles d'un hydrothermalisme océanique téthysien Revue de Géologie Dynamique et de Géographie Physique 24 305 314.

    • Search Google Scholar
    • Export Citation
  • D. Mattey D. Lowry C. Macpherson 1994 Oxygen isotope composition of mantle peridotite Earth Planet. Sci. Lett. 128 231 241.

  • Th. Meisel F. Melcher P. Tomascak Ch. Dingeldey F. Koller 1997 Re-Os isotopes in orogenic peridotite massifs in the Eastern Alps, Austria Chemical Geology 143 217 229.

    • Search Google Scholar
    • Export Citation
  • F. Melcher T. Meisel J. Puhl F. Koller 2002 Petrogenesis and geotectonic setting of ultramafic rocks in the Eastern Alps: constraints from geochemistry Lithos 65 69 112.

    • Search Google Scholar
    • Export Citation
  • J.A. Miller I. Cartwright I.S. Buick A.C. Barnicoat 2001 An O-isotope profile through the HP-LT Corsican ophiolite, France and its implications for fluid flow during subduction Chemical Geology 178 43 69.

    • Search Google Scholar
    • Export Citation
  • G. Nagy E. Draganits A. Demény Gy. Pantó P. Árkai 2002 Genesis and transformations of monazite, florencite and rhabdophane during mediumgrade metamorphism: Examples from the Sopron Hills, Eastern Alps Chemical Geology 191 25 46.

    • Search Google Scholar
    • Export Citation
  • F. Neubauer R.D. Dallmeyer I. Dunkl F. Ebner H. Fritz R. Handler B. Hubmann F. Koller W. Müller P. Peindl E. Wallbrecher W. Kiesl A. Takasu H.H. Weinke 1992 Excursion to the Eastern Central Alps: descriptions of stops F. Neubauer Geological Evolution of the Internal Eastern Alps and Carpathians and of the Pannonian Basin (ALCAPA) Field Guide Graz 201 245.

    • Search Google Scholar
    • Export Citation
  • D. Pozzorini G.L. Früh-Green 1996 Stable isotope systematics of the Ventina Ophicarbonate Zone, Bergell contact aureole Schweiz. Mineral. Petrogr. Mitt. 76 549 564.

    • Search Google Scholar
    • Export Citation
  • L. Ratschbacher J.H. Behrmann A. Pahr 1990 Penninic windows at the eastern end the Alps and their relation to the intra-Carpathian basins Tectonophysics 172 91 105.

    • Search Google Scholar
    • Export Citation
  • E.M. Ripley B.K. Butler N.I. Taib 1992 Effects of devolatilization on the hydrogen isotopic composition of pelitic rocks in the contact aureole Chem. Geol. (Isot. Geosci. Sect.) 102 185 197.

    • Search Google Scholar
    • Export Citation
  • D. Rumble T.C. Hoering 1994 Analysis of oxygen and sulfur isotope ratios in oxide and sulfide minerals by spot heating with a carbon dioxide laser in a fluorine atmosphere Accounts of Chemical Research 27 237 241.

    • Search Google Scholar
    • Export Citation
  • M. Scambelluri O. Müntener J. Hermann G.B. Piccarrdo V. Trommsdorff 1995 Subduction of water into the mantle: History of an Alpine periodotite Geology 23 459 462.

    • Search Google Scholar
    • Export Citation
  • Z.D. Sharp V. Atudorei T. Durakiewicz 2001 A rapid method for determination of hydrogen and oxygen isotope ratios from water and solid hydrous substances Chem. Geol. 178 197 210.

    • Search Google Scholar
    • Export Citation
  • C. Spötl T. Vennemann 2003 Continuous-flow isotope ratio mass spectrometric analysis of carbonate minerals Rapid Communications in Mass Spectrometry 17 1004 1006.

    • Search Google Scholar
    • Export Citation
  • T. Suzuoki S. Epstein 1976 Hydrogen isotope fractionation between OH-bearing minerals and water Geochim. Cosmochim. Acta 40 1229 1240.

  • Cs. Szabó R.J. Bodnar A.V. Sobolev 1996 Metasomatism associated with subduction-related, volatile-rich silicate melt in the upper mantle beneath the Nógrád-Gömör Volcanic field, Northern Hungary / Southern Slovakia: Evidence from silicate melt inclusions Eur. J. Mineral. 8 881 899.

    • Search Google Scholar
    • Export Citation
  • Tari, G., A.W. Bally, 1990: Metamorphic core complexes at the boundary of the Eastern Alps and the Pannonian basin. — Geological Society of America, Abstract with Programs, pp. 9798.

    • Search Google Scholar
    • Export Citation
  • Valley, J. W. 1986: Stable isotope geochemistry of metamorphic rocks.— In: Valley, J.W., Jr. H. P. Taylor, J.R. O'Neil (eds.): Stable isotopes in high temperature geological processes. — Reviews in Mineralogy, 16, pp. 445489.

    • Search Google Scholar
    • Export Citation
  • J.W. Valley N. Kitchen M.J. Kohn C.R. Niendorf M.J. Spicuzza 1995 UWG-2, a garnet standard for oxygen isotope ratios: Strategies for high precision and accuracy with laser heating Geochimica et Cosmochimica Acta 59 5523 5531.

    • Search Google Scholar
    • Export Citation
  • H. Weissert D. Bernoulli 1984 Oxygen isotope composition of calcite in Alpine ophicarbonates: a hydrothermal or Alpine metamorphic signal? Eclogae Geol. Helv. 77 29 43.

    • Search Google Scholar
    • Export Citation
  • R. Wiedemann M.T. Younes 1990 Studien zur Gefügeentwicklung (Quarzkorngefügeanalyse) im Penninikum von Rechnitz/Kõszeg (Österreich/Ungarn) Jahrbuch der Geologischen Bundesanstalt, Wien 133 385 394.

    • Search Google Scholar
    • Export Citation
  • Y.-F. Zheng 1993 Calculation of oxygen isotope fractionation in hydroxil-bearing silicates Earth Planet. Sci. Lett. 120 247 263.

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Sep 2020 0 0 0
Oct 2020 1 0 0
Nov 2020 2 0 0
Dec 2020 1 1 1
Jan 2021 1 0 0
Feb 2021 0 0 0
Mar 2021 0 0 0