Early Carboniferous (~337 Ma) granite intrusion in Devonian (~400 Ma) ophiolite of the Central-European Variscides

• Autorzy: Kryza R.
• Języki publikacji: EN

Abstrakty

EN

The Central-Sudetic ophiolites comprise mafic-ultramafic complexes around the E and S edges of the Góry Sowie Massif in SW Poland and are recognized as fragments of Devonian (~400 Ma old) oceanic crust. They contain small rodingite bodies and tectonized granite dykes that potentially can highlight the igneous, metamorphic and structural development of the ophiolitic suites. The granite dykes have been tentatively correlated with the Variscan granitoids of the Strzegom-Sobótka Massif to the north. However, new U-Pb SHRIMP zircon data for granites from the serpentinite quarry at Jordanów show a concordia age of 337 š4 Ma for the main zircon population, and of 386 š10 Ma for minor inheritance. Thus, the age of the granite is considerably older than the ages of the Strzegom-Sobótka granitoids, dated at ~310-294 Ma. The granite dyke has a similar age as some other granitoids found near the ophiolitic fragments, e.g., the Niemcza granitoids to the south, dated at 338 +2/-3 Ma; these older granitoids all represents a relatively early stage of granitoid magmatism recorded in that part of the Variscan Orogen. The age of the granitoid dyke within serpentinites confirms that the Paleozoic ophiolites were incorporated into the continental crust already in early Visean times.

Słowa kluczowe

EN

Variscides; ophiolites; SHRIMP zircon geochronology

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2011
• Tom: Vol. 55, No. 3
• Strony: 213--222
• Opis fizyczny: Bibliogr. 59 poz., rys., tab., wykr.

Twórcy

autor

Kryza R.

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

Bibliografia

• 1. BDEL WAHED M. (1999) - The Ślęża ophiolite (SW Poland): petrologi-cal and structural evolution. PhD Thesis, Institute of Geological Sciences, University of Wroclaw, Poland.
• 2. ALEKSANDROWSKI P. and MAZUR S. (2002) - Collage tectonics in the northeasternmost part of the Variscan Belt: the Sudetes, Bohemian Massif. In: Palaeozoic Amalgamation of Central Europe (eds. J. Winchester, T. Pharaoh and J. Verniers). Geol. Soc. London Spec. Publ., 201: 237-277.
• 3. 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.
• 4. COLEMAN R. G. (1977) - Ophiolites. Springer, Berlin.
• 5. CYMERMAN Z., PIASECKIM. A. J. and SESTON R. (1997) - Terranes and terrane boundaries in the Sudetes, northeast Bohemian Massif. Geol. Mag., 134 (5): 717-725.
• 6. DUBIŃSKA E. (1995) - Rodingites of the eastern part of the Jordanów-Gogołów serpentinite massif, Lower Silesia, Poland. Canadian Miner., 33: 585-608.
• 7. DUBIŃSKA E. (1997) - Rodingites and amphibolites from the serpentinites surrounding Góry Sowie block (Lower Silesia, Poland): record of supra-subduction zone magmatism and serpentinization. Neues Jahrb. Miner., Abh., 171 (3): 239-279.
• 8. DUBIŃSKA E., BYLINA P., KOZ£OWSKI A., DÕRR W. NEJBERT K., SCHASTOK J. and KULICKI C. (2004) - U-Pb dating of serpentinization: hydrothermal zircon from a metasomatic rodingite shell (Sudetic ophiolite, SWPoland). Chem. Geol., 203 (3-4): 183-203.
• 9. DUBIŃSKA E. and GUNIA P. (1997) - The Sudetic ophiolite: current view on its geodynamic model. Geol. Quart., 41 (1): 1-20.
• 10. DUBIŃSKA E. and SZAFRANEK D. (1990) - On the origin of layer silicates from Jordanów (Lower Silesia, Poland). Arch. Miner., 46 (1-2): 19-36.
• 11. DUBIŃSKAE. and WIEWIÓRA A. (1988) - Layer-silicates in the contact zone between granite and serpentinite, Jordanów, Lower Silesia, Poland. Clay Miner., 23: 459-470.
• 12. DZIEDZIC H. (1963) - So-called syenites of the Niemcza zone (Lower Silesia) (in Polish with English summary). Arch. Miner., 24 (2).
• 13. DZIEDZIC H. (1989) - Tectonics and petrogenesis of the Braszowice gab-bro. Multilateral Cooperation of Academies of Sciences of Socialist Countries, Guidebook of Excursion in Poland, University of Wroclaw, Poland: 124-156.
• 14. FINGER F., GERDES A., JANOUŠEK V., RENÉ M. and RIEGLER G. (2007) - Resolving the Variscan evolution of the Moldanubian sector of the Bohemian Massif: the significance of the Bavarian and the Moravo-Moldanubiantectonometamorphicphases. J. Geosc., 52: 9-28.
• 15. FINGER F., GERDES A., JANOUŠEK V., RENÉ M. and RIEGLER G. (2009) - The Saxo-Danubian Granite Belt: magmatic response to postcollisional delamination of mantle lithosphere below the southwestern sector of the Bohemian Massif (Variscan orogen). Geol. Carpath., 60 (3): 205-212, doi: 10.2478/v10096-009-0014-3.
• 16. FINGER F. and STEYRER H. P. (1995) - A tectonic model for the Eastern Variscides: indicators from the chemical study of amphibolites in the south-eastern Bohemian Massif. Geol. Carpath., 46: 137-150.
• 17. FLOYD P. A., KRYZA R., CROWLEY Q. G., WINCHESTER J. A. and ABDEL WAHED M. (2002) - Ślęża ophiolite: geochemical features and relationship to Lower Palaeozoic rift magmatism in the Bohemian Massif. In: Palaeozoic Amalgamation of Central Europe (eds. J. Winchester, T. Pharaoh and J. Verniers). Geol. Soc. London Spec. Publ., 201: 197-215.
• 18. FRANKE W. (2000) - The mid-European segment of the Variscides: tectonostratigraphic units, terrane boundaries and plate tectonic evolution. In: Orogenic Processes: Quantification and Modelling in the Variscan Belt (eds. W. Franke, V Haak, O. Oncken and D. Tanner). Geol. Soc. London Spec. Publ., 179: 35-61.
• 19. FRANKE W. and ŻELAŹNIEWICZ A. (2000) - The eastern termination of the Variscides: terrane correlation and kinematic evolution. In: Orogenic Processes: Quantification and Modelling in the Variscan Belt (eds. W. Franke, V Haak, O. Oncken and D. Tanner). Geol. Soc. London Spec. Publ., 179: 63-86.
• 20. GUNIA P. (1992) - Petrology of the ultrabasic rocks from the Braszowice-Brzeżnica Massif (Fore-Sudetic Block). Geol. Sudet., 26 (1-2): 119-170.
• 21. GUNIA P. (2000) - The petrology and geochemistry of mantle-derived basic and ultrabasic rocks from the Szklary massif in the Fore-Sudetic Block (SW Poland). Geol. Sudet., 33 (2): 71-83.
• 22. HEFLIK W. (1967) - Mineralogical and petrographic investigation of the leucocratic altered zone of Jordanów (Lower Silesia) (in Polish with English summary). Pr. Miner. Komis. Nauk Miner. Pol. Acad. Sc., 10.
• 23. HEFLIK W. (1982) - Pozycja petrologiczna rodingitów z Jordanowa (Dolny Śląsk) (in Polish with English summary). Prz. Geol., 30 (6): 277-280.
• 24. HÖCK V., MONTAG O. and LEICHMAN J. (1997) - Ophiolite remnants at the eastern margin of the Bohemian Massif and their bearing on the tectonic evolution. Miner. and Petrol., 60: 267-287.
• 25. JAMROZIK L. (1981) - Tectonic position of ultrabasite-basite massifs surrounding the Góry Sowie block. In: Ophiolites and Initialites of Northern Border of the Bohemian Massif (ed. W Narębski): 86-95. Conference Proceedings, Potsdam-Freiberg.
• 26. JANOUŠEK V. and HOLUB F. V. (2007) - The causal link between HP-HT metamorphism and ultrapotassic magmatism in collisional orogens: case study from the Moldanubian Zone of the Bohemian Massif. Proc. Geol. Ass., 118: 1-12.
• 27. JĘDRYSEK M.-O, MAJEROWICZ A., JASIŃSKA B. and HAŁAS S. (1989) - The migration of oceanic water into the upper mantle. Evidence from dD and d18O values of minerals of rodingitic rocks of the ophiolitic complex of Ślęża, SWPoland. Miner. Pol., 20(1): 107-117.
• 28. KRYZA R. (2010) - The Central-Sudetic ophiolites: SHRIMP zircon geochronology (preliminary results). Miner., Spec. Pap., 37: 89-90.
• 29. KRYZA R. and ABDEL WAHED M. (2000) - The Ślęża mafic complex: contrasting geochemistry of plutonic and subvolcanic/volcanic rocks. Miner. Soc. Poland Spec. Pap., 17: 195-197.
• 30. KRYZA R., MAZUR S. and OBERC-DZIEDZIC T. (2004) - The Sudetic geological mosaic: insights into the root of the Variscan orogen (in Polish with English summary). Prz. Geol., 52 (8/2): 761-773.
• 31. KRYZA R. and PIN C. (2010) - The Central-Sudetic ophiolites (SW Poland): petrogenetic issues, geochronology and palaeotectonic implications. Gondwana Res., 17 (2-3): 292-305.
• 32. 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. In: The Neoproterozoic Timanide Orogen of Eastern Baltica (eds. D. G. Gee and V. L. Pease). Geol. Soc. London Mem., 30: 69-74.
• 33. LIS J. and SYLESTRZAK H. (1981) - Nowy zespół minerałów w leukokratycznej strefie Jordanowa k. Sobótki i jego znaczenie genetyczne (in Polish with English summary). Prz. Geol., 29 (2): 67-72.
• 34. LORENC M. and KENNAN P. (2007) - Intrusive rocks from the Niemcza zone (Lower Silesia, Poland) in the light of petrologic and Rb-Sr isotope studies. Granitoids in Poland (eds. A. Kozłowski and J. Wiszniewska). Arch. Miner. Monograph, 1: 253-259.
• 35. LUDWIG K. R. (2005a) - SQUID 1.12 A User's Manual. A Geochronol-ogical Toolkit for Microsoft Excel. Berkeley Geochronology Center Special Publication, http://www.bgc.org/klprogrammenu.html
• 36. LUDWIG K. R. (2005b) - User’s Manual for ISOPLOT/Ex 3.22. A Geochronological Toolkit for Microsoft Excel. Berkeley Geochronology Center Special Publication, http://www.bgc.org/klprogrammenu.html
• 37. MAJEROWICZ A. (1979) - The Ślęża Mt group and ophiolite problems (in Polish with English summary). In: Wybrane zagadnienia stratygrafii, petrografii i tektoniki wschodniego obrzeżenia gnejsów sowiogórskich i metamorfiku kłodzkiego (ed. T. Gunia): 9-34. Field Conference, September 8-9, 1979, Nowa Ruda, Wrocław.
• 38. MAJEROWICZ A. (1984) - Petrography and origin of rodingitic rocks from serpentinites of Ślęża ophiolitic sequence (in Polish with English summary). Geol. Sudet., 18 (2): 109-132.
• 39. MAJEROWICZ A. (1994) - Textural features and symptoms of ocean-floor metamorphism in the top part of the Ślęża ophiolite (SW Poland). Arch. Miner., 50 (2): 97-139.
• 40. MAJEROWICZ A., KRYZA R. and WRÓBLEWSKA G. (2000) -Diallagite pegmatitoids from Mt. Ślęża gabbro. In: Tectonics of the Ślęża Mt. Ophiolite and its Influence on the Distribution of Some Mineral Ores and Groundwater (ed. M. Mierzejewski): 49-54. Institute of Geological Sciences, University of Wrocław, Wrocław.
• 41. MAJEROWICZ A. and PIN C. (1989) - Recent progress in petrologic study of the Ślęża Mt. ophiolite complex, Lower and Upper Paleozoic metabasites and ophiolites of the Polish Sudetes. Multilateral Cooper-
• 42. ation of Academies of Sciences of Socialist Countries, Guidebook of Excursion in Poland, University of Wroclaw, Poland: 34-72.
• 43. MAJEROWICZ A. and PIN C. (1994) - The main petrological problems of the Mt. Ślęża ophiolite complex, Sudetes, Poland. Zentralblatt Geologie und Palaeontologie, Teil I, 9/10: 989-1018.
• 44. MATTE P., MALUSKI H., RAJLICH P. and FRANKE W. (1990) - Terrane boundaries in the Bohemian Massif: results of large-scale Variscan shearing. Tectonophysics, 177: 151-170.
• 45. MAZUR S., ALEKSANDROWSKI P., KRYZA R. and OBERC-DZIEDZIC T. (2006) - The Variscan Orogen in Poland. Geol. Quart., 50(1): 89-118.
• 46. MAZUR S., ALEKSANDROWSKI P., TURNIAK K. and AWDANKIEWICZ M. (2007) - Geology, tectonic evolution and Late Palaeozoic magmatism of Sudetes - an overview. In: Granitoids in Poland (eds. A. Kozlowski and J. Wiszniewska). Arch. Miner. Monograph, 1: 59-87.
• 47. MIERZEJEWSKI M. P. and ABDEL WAHED M. (2000) - Overlapping thrust faults within the Gogołów-Jordanów serpentinite massif (SW Poland): evidence for the obduction of Ślęża ophiolite complex. In: Tectonics of the Ślęża Mt. Ophiolite and its Influence on the Distribution of Some Mineral Ores and Groundwater (ed. M. Mierzejewski): 29-41. Institute of Geological Sciences, University of Wroclaw, Wroclaw.
• 48. NANCE R. D., GUTIÉRREZ-ALONSO G., KEPPIE J. D., LINNEMANN U., MURPHY J. B., QUESADA C., STRACHAN R. A. and WOODCOCK N. (2010) - Evolution of the Rheic Ocean. Gondwana Res., 17 (2-3): 194-222.
• 49. NARĘBSKIW. (1993) - On the model of evolution of the NE part of the Bohemian Massif- petrologist's remarks (in Polish with English summary). Prz. Geol., 41 (11): 751-756.
• 50. OLIVER G. J. H., CORFU F. and KROUGH T. E. (1993) - U-Pb ages from SW Poland: evidence for a Caledonian suture zone between Baltica and Gondwana. J. Geol. Soc. London, 150: 355-369.
• 51. PIN C. (1990) - Variscan oceans: ages, origins and geodynamic implications inferred from geochemical and radiometric data. Tectonophysics, 177: 215-227.
• 52. PIN C., MAJEROWICZ A. and WOJCIECHOWSKA I. (1988) - Upper Paleozoic oceanic crust in the Polish Sudetes: Nd-Sr isotope and trace element evidence. Lithos, 21: 195-209.
• 53. 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.
• 54. STEIGER R. H. and JÄGER E. (1977) - Subcommission on geochronol-ogy: convention on the use of decay constants in geo- and cosmochronology. Earth Planet. Sc. Lett., 36: 359-362.
• 55. TRAUBE H. (1888) - Die Minerale Schlesiens. Breslau.
• 56. TURNIAK K., TICHOMIROWA M. and BOMBACH K. (2005) - Zircon Pb-evaporation ages of granitoids from the Strzegom-Sobótka Massif (SW Poland). Miner. Soc. Poland Spec. Pap., 25: 241-245.
• 57. 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. Geostandards Newslett., 19:1-23.
• 58. WILLIAMS I. S. (1998) - U-Th-Pb Geochronology by ion microprobe. In: Applications in Microanalytical Techniques to Understanding Mineralizing Processes. Rev. Economic Geol., 7: 1-35.
• 59. ŻELAŹNIEWICZ A. (1995) - Fore-Sudetic part of the Góry Sowie Block (in Polish with English summary). Ann. Soc. Geol. Pol., Spec. Issue, Guide to Excursions, 66 Annual Meeting of Polish Geological Society: 85-109.