Ambiguous geological position of Carboniferous rhyodacites in the Intra-Sudetic Basin (SW Poland) clarified by SHRIMP zircon ages

• Autorzy: Kryza R. , Awdankiewicz M.
• Języki publikacji: EN

Abstrakty

EN

Rhyodacite sheets (the Sady Górne Rhyodacites) in the lowermost part of the Permo-Carboniferous Intra-Sudetic Basin molasse fill have been mapped as intrusives but, later on, based on ambiguous field and petrographic evidence, reinterpreted as lower Carboniferous lavas and tuffs; if so, they would mark the earliest episode of late-orogenic volcanism in the Intra-Sudetic Basin and in the whole Sudetes region in SW Poland. However, re-examination of field relationships and new observations are consistent with an intrusive emplacement of the rhyodacites as conformable to semiconformable, simple to composite sheets. SHRIMP zircon study indicates that the rhyodacites contain rare inherited zircons of ca. 560 Ma, and ca. 470 Ma (or slightly older), and a main population of zircons with an average concordia age of 306.1 š2.8 Ma. This latter age documents the emplacement of the rhyodacites during a mid/late late Carboniferous (Westphalian) stage of volcanism in the Intra-Sudetic Basin in the Central European Variscides. This post-orogenic volcanism was possibly initiated several million years later than previously assumed, and could have comprised a few pulses over a relatively prolonged time span of millions of years.

Słowa kluczowe

EN

Sudetes; Variscan orogeny; Carboniferous; SHRIMP zircon dating; volcanism; subvolcanic intrusions

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2012
• Tom: Vol. 56, No 1
• Strony: 55--66
• Opis fizyczny: Bibliogr. 40 poz., rys., tab.

Twórcy

autor

Kryza R.

autor

Awdankiewicz M.

• Institute of Geological Sciences, University of Wrocław, Cybulskiego 30, 50-205 Wrocław, Poland,

Bibliografia

• 1.AWDANKIEWICZ M. (1999a) - Volcanism in a late Variscan intramontane trough: Carboniferous and Permian volcanic centres of the Intra-Sudetic Basin, SW Poland. Geol. Sudet., 32 (1): 13-47.
• 2.AWDANKIEWICZ M. (1999b) - Volcanism in a late Variscan intramontane trough: the petrology and geochemistry of the Carboniferous and Permian volcanic rocks of the Intra-Sudetic Basin, SW Poland. Geol. Sudet., 32 (2): 83-111.
• 3.AWDANKIEWICZ M. (2004) - Sedimentation, volcanism and subvolcanic intrusions in a late Palaeozoic intramontane trough (the Intra-Sudetic Basin, SW Poland). Geol. Soc., London, Spec. Publ., 234: 5-11.
• 4.AWDANKIEWICZ M. and KRYZA R. (2010) - The Chełmiec subvolcanic intrusion (Intra-Sudetic Basin, SW Poland): preliminary SHRIMP zircon age. Miner. Spec. Pap., 37.
• 5.BERG G., DATHE E. and ZIMMERMANN E. (1906) - Geologischen Karte von Preußen und benachbarten Bundesstaaten. Blatt Freiburg., Berlin.
• 6.BLACK L. P., KAMO S. L., ALLEN C. M., ALEINIKOFF J. N., DAVIS D. W., KORSCH R. J. and FOUDOULIS C. (2003) - TEMORA 1: a new zircon standard for Phanerozoic U-Pb geochronology. Chem. Geol., 200: 155-170.
• 7.BOSSOWSKI A., SAWICKI L. and WROŃSKI J. (1981) - Mapa geologiczna Polski 1:200 000. B - mapa bez utworów czwartorzędowych, ark. Wałbrzych. Wyd. Geol., Warszawa.
• 8.CAS R. A. F. and WRIGHT J. V. (1987) - Volcanic successions modern and ancient: a geological approach to processes, products and successions. Allen and Unwin Ltd.
• 9.DATHE E. and ZIMMERMANN E. (1912) - Erläuterungen zur geologischen karte von Preußen und benachbarten Bundesstaaten. Blatt Freiburg (Lieferung 145). Königliche Geologische Landesanstalt, Berlin.
• 10.DZIEDZIC K. and TEISSEYRE A. K. (1990) - The Hercynian molasse and younger deposits in the Intra-Sudetic Depression, SW Poland. Neues Jahrb. Geol. Paläont. Abh., 179: 285-305.
• 11.JURASIK M. (2006) - Zircons from the Lower Carboniferous volcanic rocks of the Intra-Sudetic Basin and bentonites of the Bardo Mountains (in Polish with English summary). Unpubl. M.Sc. thesis, University of Wrocław.
• 12.KODYM O., FUSÁN O. and MATĚJKA A., eds. (1967) - Geological Map of Czechoslovakia 1:500 000, West. Ústředni ústav geologický, Praha.
• 13.LARIONOV A. N., ANDREICHEV V. A. and GEE D. G. (2004) - The Vendian alkaline igneous suite of northern Timan: ion microprobe U-Pb zircon ages of gabbros and syenite. Geol. Soc. London Mem., 30: 69-74.
• 14.LUDWIG K. R. (2005a) - SQUID 1.12 Auser's Manual. AGeochronological Toolkit for Microsoft Excel. Berkeley Geochronol. Center Spec. Publ.: 1-22, http://www.bgc.org/klprogrammenu.html
• 15.LUDWIG K. R. (2005b) - User's Manual for ISOPLOT/Ex 3.22. A Geo-chronological Toolkit for Microsoft Excel. Berkeley Geochronol. Center Spec. Publ.: 1-71, http://www.bgc.org/klprogrammenu.html.
• 16.MACHOWIAK K., ARMSTRONG R., KRYZA R. and MUSZYŃSKI A. (2008) - Late-orogenic magmatism in the central European Variscides: SHRIMP U-Pb zircon age constraints from the Żelaźniak intrusion, KaczawaMountains, West Sudetes. Geol. Sudet., 40: 1-18.
• 17.MASTALERZ K. and PROUZA V. (1995) - Development of the Intra-Sudetic Basin during Carboniferous and Permian. In: Sedimentary Record of the Variscan Orogeny and Climate - Intra-Sudetic Basin, Poland and Czech Republic (eds. K. Mastalerz, V. Prouza, L. Kurowski, A. Bossowski, A. Ihnatowicz and G. Nowak): 5-15. Guide to Excursion B1. XIII International Congress on Carboniferous-Permian. August 28-September 2, 1995, Karków, Poland.
• 18.McPHIE J., DOYLE M. and ALLEN R. (1993) - Volcanic textures. A guide to the interpretation of textures in volcanic rocks. CODES, Tasmania.
• 19.MENNING M., ALEKSEEV A. S., CHUVASHOV B. I., DAVYDOV V. I., DEVUYST F. X., FORKE H. C., GRUNT T. A., HANCE L., HECKEL P. H., IZOKH N. G., JIN Y. G., JONES P. J., KOTLYAR G. V., KOZUR H. W., NEMYROVSKA T. I., SCHNEIDER J. W., WANG X. D., WEDDIGE K., WEYER D. and WORK D. M. (2006) - Global time scale and regional stratigraphic reference scales of Central and West Europe, East Europe, Tethy s, South China, and North America as used in the Devonian-Carboniferous-Permian Correlation Chart 2003 (DCP 2003). Palaeogeogr. Palaeoclimat. Palaeoecol., 240: 318-372.
• 20.MILEWICZ J., SZAŁAMACHA J. and SZAŁAMACHA M. (1989) -Mapa geologiczna Polski 1:200 000. B - mapa bez utworów czwartorzędowych, ark. Jelenia Góra. Wyd. Geol., Warszawa.
• 21.NEMEC W., PORĘBSKI S. and TEISSEYRE A. K. (1982) - Explanatory notes to the lithotectonic molasse profile of the Intra-Sudetic Basin, Polish Part (Sudety Mts., Carboniferous-Permian). Veröffentlichung des Zentralinstituts für Physik der Erde AdW DDR, Potsdam, 66: 267-277.
• 22.OBERC-DZIEZIC T., KRYZA R. and PIN C. (2009) - The crust beneath the Polish Sudetes: evidence from a gneiss xenolith in Tertiary basanite from Paszowice. Geodinam. Acta, 22 (3): 9-31.
• 23.PAULICK H. and BREITKREUZ C. (2005) - The Late Palaeozoic felsic lava-dominated large igneous province in northeast Germany: volcanic facies analysis based on drill cores. Internat. J. Earth Sc., 94: 834-850.
• 24.PIN C., KRYZA R., OBERC-DZIEDZIC T., MAZUR S., TURNIAK K. and WALDHAUSROVÁ J. (2007) - The diversity and geodynamic significance of Late Cambrian (c. 500 Ma) felsic anorogenic magmatism in the northern part of the Bohemian Massif: a review based on Sm-Nd isotope and geochemical data. Geol. Soc. Am. Spec. Publ., 423: 209-230.
• 25.SAWICKI L. (1988)-Mapa geologiczna Polski 1:200 000. B-mapa bez utworów czwartorzędowych, ark. Kłodzko. Wyd. Geol., Warszawa.
• 26.STACEY J. S. and KRAMERS J. D. (1975) - Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sc. Lett., 26: 207-221.
• 27.STEIGER R. H. and JÄGER E. (1977) - Subcommission on geochronology: convention on the use of decay constants in geo- and cosmochronology. Earth Planet. Sc. Lett., 36: 359-362.
• 28.TEISSEYRE A. K. (1966) - On the Lower Carboniferous volcanism of the Intrasudetic Basin: new data about eruptive and pyroclastic rocks (in Polish with English summary). Acta Geol. Pol., 16 (4): 445-475.
• 29.TEISSEYRE A. K. (1968) - The Lower Carboniferous of the Intrasudetic Basin: a study in sedimentary petrology and basin analysis (in Polish with English summary). Geol. Sudet., 4: 221-298.
• 30.TEISSEYRE A. K. (1970) - Contemporaneous pyrogenic materials in the Kulm of Sady Górne (Intrasudetic Basin). Bull. Pol. Sc., Ser. Sc. Géol. Géogr., 18(1): 21-2
• 31.TEISSEYRE A. K. (1975) - Sedimentology and palaeogeography of the Kulm alluvial fans in the western Intrasudetic Basin (Central Sudetes, SW Poland) (in Polish with English summary). Geol. Sud., 9.
• 32.TEISSEYRE H. (1972) - Szczegółowa mapa geologiczna Sudetów 1:25 000, ark. Stare Bogaczowice. Wyd. Geol., Warszawa.
• 33.TURNAU E., ŻELAŹNIEWICZ A. and FRANKE W. (2002) - Middle to early late Visean onset of late orogenic sedimentation in the Intra-Sudetic Basin, West Sudetes: miospore evidence and tectonic implications. Geol. Sudet., 34: 9-16.
• 34.ULRYCH J., FEDIUK F., LANG M. and MARTINEC P. (2004) - Late Palaeozoic volcanic rocks of the Intra-Sudetic Basin, Bohemian Massif: petrological and geochemical characteristics. Chemie der Erde, Geochem., 64: 127-153.
• 35.WAGNER R., ed. (2008) - Tabela stratygraficzna Polski. Polska pozakarpacka. Ministerstwo Środowiska, Warszawa.
• 36.WIEDENBECK M., ALLÉ P., CORFU F., GRIFFIN W. L., MEIER M., OBERLI F., von QUADT A., RODDICK J. C. and SPIEGEL W. (1995) - Three natural zircon standards for U-Th-Pb, Lu-Hf, trace element and REE analyses. Geostandard Newslett., 19: 1-23.
• 37.WILLIAMS I.S. (1998) - U-Th-Pb Geochronology by ion microprobe. Soc. Econom. Geol., Rev. Econom. Geol., 7: 1-35.
• 38.WOJEWODA J. and MASTALERZ K. (1989) - Climate evolution, allo-and autocyclicity of sedimentation: an example from the Permo-Carboniferous continental deposites of the Sudetes, SW Poland (in Polish with English summary). Prz. Geol., 37 (4): 173-180.
• 39.ZIMMERMANN E. (1920) - Die Gänge und Stöcke von Porphyr im Katzbach- und Waldenburger Gebirge in Schlesien. Jahrb. Preußisch. Geol. Landesanst., Band XLI, Teil II, Heft, 1: 356-367.