View More View Less
  • 1 Department of Petrology and Geochemistry, Eötvös Loránd University, H-1117, Budapest, Pázmány Péter sétány 1/C, Hungary
  • 2 Department of Earth and Environmental Sciences, University of Pannonia, H-8201, Veszprém, P.O. Box 158, Hungary
Restricted access

Abstract

The clay mineralogical and chemical compositions of Upper Carboniferous siliciclastic rocks from the western flank of the Villány Mountains (Téseny Sandstone Formation) have been investigated to determine paleoweathering conditions, as well as to appraise the influence of the post-depositional processes upon source rock signature. The clay-mineral assemblage of the samples consists predominantly of illite±muscovite, suggesting a potassium metasomatism in the Téseny clastics. Therefore the use of the Chemical Index of Alteration (CIA), which provides a consistent quantitative framework for examining weathering, leads to erroneous conclusions without correction for K-metasomatism. When considered in Al2O3-CaO* + Na2O-K2O (A-CN-K) compositional space, orthogneiss and igneous rock clasts selected from the Téseny conglomerate reflect two different weathering trends; one (including orthogneiss, quartz diorite, and andesite samples) shows an ideal trend observed for granodioritic rocks, and the other (including aplite, rhyodacite, and rhyolite samples) follows a trend from a slightly more K-feldspar-rich fresh rock composition than that of average granite. Intermediate to intense chemical weathering of the source areas is indicated by premetasomatized CIA values of 77–84 for the samples from borehole Siklósbodony-1, suggesting that these rocks have gained about 6–7% K2O (in A-CN-K space) during metasomatism.

  • B. Bauluz M.J. Mayayo Burillo C. Fernandez-Nieto J.M. Gonzalez Lopez 1995 Mineralogy and geochemistry of Devonian detrital rocks from the Iberian Range (Spain) Clay Minerals 30 381 394.

    • Search Google Scholar
    • Export Citation
  • K.C. Condie 1993 Chemical composition and evolution of the upper continental crust: Contrasting results from surface samples and shales Chemical Geology 104 1 37.

    • Search Google Scholar
    • Export Citation
  • R. Cox D.R. Lowe R.L. Cullers 1995 The influence of sediment recycling and basement composition on evolution of mudrock chemistry in the southwestern United States Geochimica et Cosmochimica Acta 59/14 2919 2940.

    • Search Google Scholar
    • Export Citation
  • C.M. Fedo H.W. Nesbitt G.M. Young 1995 Unraveling the effects of potassium metasomatism in sedimentary rocks and paleosols, with implications for paleoweathering conditions and provenance Geology 23 921 924.

    • Search Google Scholar
    • Export Citation
  • C.M. Fedo K.A. Eriksson E.J. Krogstad 1996 Geochemistry of shales from the Archean (∼3.0 Ga) Buhwa Greenstone Belt, Zimbabve: Implications for provenance and source-area weathering Geochimica et Cosmochimica Acta 60 1751 1763.

    • Search Google Scholar
    • Export Citation
  • J. Fülöp 1994 Magyarország geológiája. Paleozoikum II Akadémiai Kiadó Budapest (Geology of Hungary. Paleozoic, II).

  • J. Gaillardet B. Dupré C.J. Allegre 1999 Geochemistry of large river suspended sediments: Silicate weathering or recycling tracer Geochimica et Cosmochimica Acta 63/23–24 4037 4051.

    • Search Google Scholar
    • Export Citation
  • J. Haas G. Hámor L. Korpás 1999 Geological setting and tectonic evolution of Hungary Geologica Hungarica Ser. Geol. 24 179 196.

  • Zs. Hartyáni I. Pécsi S. Szabó J. Szauer L. Merényi V. Szilágyi 2000 Mineralogical and chemical investigation of soil formed on basaltic bentonite at Egyházaskeszö, Transdanubia, Hungary Acta Geol. Hung. 43/4 431 446.

    • Search Google Scholar
    • Export Citation
  • S. Hassan I. Hiroaki B.P. Roser K. Dozen T. Naka 1999 Geochemistry of Permian-Triassic shales in the Salt Range, Pakistan: Implications for provenance and tectonism at the Gondwana margin Chemical Geology 158 293 314.

    • Search Google Scholar
    • Export Citation
  • Hetényi, R., L. Ravasz-Baranyai 1976: A baranyai antracittelepes felsökarbon összlet a Siklósbodony 1. és a Bogádmindszent 1. sz. fúrás tükrében (The anthracitiferous Upper Carboniferous sequence of Baranya, South Hungary, in the light of boreholes Siklósbodony-1 and Bogádmindszent-1). — MÁFI Évi Jelentése az 1973. évröl, pp. 323361. (In Hungarian, with English abstract.).

    • Search Google Scholar
    • Export Citation
  • Jámbor, Á. 1969: Karbon képzödmények a Mecsek és a Villányi-hegység közötti területen (Carboniferous deposits in the area between the Mecsek and Villány Mountains). — MÁFI Évi Jelentése az 1967. évröl, pp. 215221. (In Hungarian, with English abstract.).

    • Search Google Scholar
    • Export Citation
  • Y.I. Lee 2002 Provenance derived from the geochemistry of late Paleozoic-early Mesozoic mudrocks of the Pyeongan Supergroup, Korea Sedimentary Geology 149 219 235.

    • Search Google Scholar
    • Export Citation
  • H.W. Nesbitt G.M. Young 1982 Early Proterozoic climates and plate motions inferred from major element chemistry of lutites Nature 299 715 717.

    • Search Google Scholar
    • Export Citation
  • H.W. Nesbitt G.M. Young 1984 Prediction of some weathering trends of plutonic and volcanic rocks based on thermodynamic and kinetic considerations Geochimica et Cosmochimica Acta 48 1523 1534.

    • Search Google Scholar
    • Export Citation
  • H.W. Nesbitt G.M. Young 1989 Formation and diagenesis of weathering profiles Journal of Geology 97 129 147.

  • H.W. Nesbitt G. Markovics R.C. Price 1980 Chemical processes affecting alkalines and alkaline earths during continental weathering Geochimica et Cosmochimica Acta 44 1659 1666.

    • Search Google Scholar
    • Export Citation
  • H.W. Nesbitt C.M. Fedo G.M. Young 1997 Quartz and feldspar stability, steady and nonsteady-state weathering, and petrogenesis of siliciclastic sands and muds Journal of Geology 105 173 191.

    • Search Google Scholar
    • Export Citation
  • T. Szederkényi 2001 Tisza Mega-unit J. Haas Geology of Hungary Eötvös University Press Budapest 148 169.

  • A.R. Varga Gy. Szakmány 2004 Geochemistry and provenance of the Upper Carboniferous sandstones from borehole Diósviszló-3 Acta Mineralogica-Petrographica, Szeged 45/2 7 14 (Téseny Sandstone Formation, SW Hungary).

    • Search Google Scholar
    • Export Citation
  • A. Varga Gy. Szakmány S. Józsa Z. Máthé 2001 A nyugat-mecseki alsó-miocén konglomerátum karbon homokkö kavicsainak és a Tésenyi Homokkö Formáció képzödményeinek petrográfiai és geokémiai összehasonlítása Földtani Közlöny 131 11 36 (Petrographic and geochemical comparison between the Carboniferous sandstone pebbles of the Lower Miocene conglomerate from western Mecsek Mts. and Téseny Sandstone Formation).

    • Search Google Scholar
    • Export Citation
  • A. Varga B. Raucsik Gy. Szakmány Zs. Hartyáni V. Szilágyi T. Horváth 2002 Mállási indexek összehasonlítása: a kémiai mállás hatása törmelékes közetek ásvaányos összetételére Magyar Kémiai Folyóirat 108/9 387 396 (Comparison of weathering indices: the effects of chemical weathering of mineralogical composition of siliciclastic rocks).

    • Search Google Scholar
    • Export Citation
  • A.R. Varga Gy. Szakmány S. Józsa Z. Máthé 2003 Petrology and geochemistry of Upper Carboniferous siliciclastic rocks Acta Geologica Hungarica 46/1 95 113 (Téseny Sandstone Formation) from the Slavonian-Drava Unit (Tisza Megaunit, S Hungary) — summarized results.

    • Search Google Scholar
    • Export Citation
  • A.R. Varga B. Raucsik Gy. Szakmány 2004 A Siklósbodony Sb-1 mélyfúrás feltételezett karbon-perm határképzödményeinek ásványtani, közettani és geokémiai jellemzöi Földtani Közlöny 134/3 321 343 (Mineralogical, petrographic and geochemical characteristics of siliciclastic rocks from the supposed Carboniferous-Permian boundary in borehole Siklósbodony Sb-1, southwestern Hungary).

    • Search Google Scholar
    • Export Citation
  • Varga, A., Gy. Szakmány, T. Árgyelán, S. Józsa, B. Raucsik, Z. Máthé 2007: Complex examination of the Upper Paleozoic siliciclastic rocks from southern Transdanubia, SW Hungary — Mineralogical, petrographic, and geochemical study. — In: Arribas, J., S. Critelli, M.J. Johnsson (eds): Sedimentary Provenance and Petrogenesis: Perspectives from Petrography and Geochemistry. Geological Society of America Special Paper, 420, pp. 221240.

    • Search Google Scholar
    • Export Citation
  • C.E. Weaver 1989 Clays, Muds, and Shales Elsevier Amsterdam.

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Nov 2020 3 7 2
Dec 2020 0 0 0
Jan 2021 1 0 0
Feb 2021 0 0 0
Mar 2021 8 0 0
Apr 2021 1 0 0
May 2021 0 0 0