An insight into a gneiss core of the Orlica–Śnieżnik Dome, NE Bohemian Massif : new structural and U-Pb zircon data

• Autorzy: Redlińska-Marczyńska A. , Żelaźniewicz A. , Fanning C. M.

Identyfikatory

DOI

10.7306/gq.1287

• Języki publikacji: EN

Abstrakty

EN

The Orlica–Śnieżnik Dome in the Sudetes, the NE Bohemian Massif, embraces two formations of felsic gneisses of controversial origin and evolution. Our study shows that despite similar geochemical signatures, they carry systematic minor differences in mineral, isotope, zircon and geothermobarometric characteristics. Four variants of the Gierałtów gneisses include migmatites and have a longer structural history than the Śnieżnik augen orthogneisses. U-Pb SHRIMP analyses yielded U-Pb ages of ~500 Ma for cores and ~498 Ma for wide outer parts of zircon grains in the twice-folded Gierałtów gneisses, and an age of ~500 Ma for a discordant neosome vein. Neoproterozoic metasediments were among precursors of the lithologically diversified Gierałtów Gneiss Formation. First deformation, metamorphism, and migmatisation of these rocks occurred at 515–475 Ma and overlapped with the development and emplacement of a porphyritic S-type granite precursor to the Śnieżnik Gneiss Formation. The metagranite (= Śnieżnik augen orthogneiss) embraced migmatitic xenoliths. Zircon grains from such xenoliths revealed distorted and replaced cores which yielded U-Pb ages that dispersed around 507–487 Ma, whilst wide darker poorly zoned outgrowths yielded ages from ~343 Ma to ~325 Ma (mean ~340 Ma). These outgrowths were interpreted as a record of Carboniferous metamorphism assisted by rich Zr- and U-carrying fluids. The Variscan metamorphic overprint was heterogeneous, and variously affected rocks of the two gneiss formations.

Słowa kluczowe

EN

Cambrian; migmatites; Variscan orogeny; SHRIMP; Sudetes

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2016
• Tom: Vol. 60, No. 3
• Strony: 714--736
• Opis fizyczny: Bibliogr. 100 poz., fot., mapy, rys., tab., wykr.

Twórcy

autor

Redlińska-Marczyńska A.

• Adam Mickiewicz University, Institute of Geology, Maków Polnych 16, 61-606 Poznań, Poland

autor

Żelaźniewicz A.

• Adam Mickiewicz University, Institute of Geology, Maków Polnych 16, 61-606 Poznań, Poland
• Polish Academy of Science, Institute of Geological Sciences, Podwale 75, 50-449 Wrocław, Poland

autor

Fanning C. M.

• The Australian National University, Research School of Earth Sciences, Canberra 0200, Australia

Bibliografia

• 1. Aleksandrowski, P., Mazur, S., 2002. Collage tectoni cs in the northeasternmost part of the Variscan Belt: the Sudetes, Bohemian Massif. Geological Society Special Publications, 201: 237-277.
• 2. Aleksandrowski, P., Kryza, R., Mazur, S., Pin, C., Zalasiewicz, J.A., 2000. The Polish Sudetes: Caledonian or Variscan? Transactions of the Royal Society of Edinburgh: Earth Sciences, 90: 127-146.
• 3. Anczkiewicz, R., Szczepański, J., Mazur, S., Storey, C., Crowley, Q., Villa, I.M., Thirlwall, M.F., Jeffries, T.E., 2007. Lu-Hf geochronology and trace element distribution in garnet: Implications for uplift and exhumation of ultra-high pressure granulites in the Sudetes, SW Poland. Lithos, 95: 363-80.
• 4. Borkowska, M., 1994. Gnejsy metamorfiku Śnieżnika w Sudetach w świetle badań mineralogiczno-geochemicznych (in Polish). Archiwum Mineralogiczne, 50: 144-145.
• 5. Borkowska, M., 1996. P-T conditions of metamorphism in orthogneisses of the Śnieżnik region - Sudetes, Pol and. Terra Nostra, 96: 26-30.
• 6. Borkowska, M., Choukroune, P., Hameurt, J., Martineau, F., 1990. A geochemical investigation of age, significance and structural evolution of the Caledonian-Variscan granlte-gneisses of the Śnieżnik metamorphic area (Central Sudetes, Poland). Geologia Sudetica, 25: 1-27.
• 7. Bröcker, M., Klemd, R., 1996. Ultrahigh-pressure metamorphism in the Śnieżnik Mountains (Sudetes, Poland): P-T constraints and geological implications. Journal of Geology, 104: 417-33.
• 8. Bröcker, M., Klemd, R., Cosca, M., Brock, W., Larionov, A.N., Rodionov, N., 2009. The timing of eclogite-facies metamorphism and migmatization in the Orlica-Śnieżnik complex, Bohemian Massif: constraints from a geochronological multi-method study. Journal of Metamorphic Geology, 27: 385-403.
• 9. Bröcker, M., Klemd, R., Kooijman, E., Berndt, J., Larionov, A., 2010. Zircon geochronology and trace element characteristics of eclogites and granulites from the Orlica-Śnieżnik complex, Bohemian Massif. Geological Magazine, 147: 339-362.
• 10. Brueckner, H.K., Medaris, L.G. Jr., Bakun-Czubarow, N., 1991. Nd and Sr age and isotope patterns from Variscan eclogites of the eastern Bohemian Massif. Neues Jahrbuch für Mineralogie, Abhandlungen, 163: 169-96.
• 11. Budzyń, B., Jastrzębski, M., Kozub-Budzyń, G.A., Konečný, P., 2015. Monazite Th-U-total Pb geochronology and P-T thermodynamic modeling in a revision of the HP-HT metamorphic record in granulites from Stary Gierałtów (NE Orlica-Śnieżnik Dome, SW Poland). Geological Quarterly, 59 (4): 700-717.
• 12. Chamberlain, C.P., Lyons, J.B., 1983. Pressure, temperature and metamorphic zonation studies of pelitic schists in the Merrimack Synclinorium, south central New Hampshire. American Mineral- o gist, 68: 530-540.
• 13. Chopin, F., Schulmann, K., Štípská, P., Martelat, J. E., Pitra, P., Lexa, O., Petri, B., 2012a. Microstructural and metamorphic evolution of a high-pressure granitic orthogneiss during continental subduction (Orlica-Śnieżnik dome, Bohemian Massif). Journal of Metamorphic Geology, 30: 347-376.
• 14. Chopin, F., Schulmann, K., Skrzypek, E., Lehmann, J., Dujardin, J. R., Martelat, J. E., Lexa, O., Corsini, M., Edel, J.B., Štípská, P., Pitra, P., 2012b. Crustal influx, indentation, ductile thinning and gravity redistribution in a continental wedge: building a Moldanubian mantled gneiss dome with underthrust Saxothuringian material (European Variscan belt). Tectonics, 31 , TC1013.
• 15. Corfu, F., Hanchar, J.M., Hoskin, P.W.O., Kinny, P. 2003. Atlas of zircon textures. Reviews in Mineralogy and Geochemistry, 53: 469-500.
• 16. Cymerman, Z., 1997. Structure, kinematics and an evolution of the Orlica-Śnieżnik Dome, Sudetes. Prace Państwowego Instytutu Geologicznego, 156: 3-120.
• 17. Don, J., 1964. The Złote and Krowiarki Mts. as structural elements of the Śnieżnik metamorphic massif (in Polish with English summary). Geologia Sudetica, 1: 79-117.
• 18. Don, J., 2001. The relationship between the Gierałtów migmatites and the Śnieżnik granitogneisses within the Kletno fold. Prace Specjalne Polskiego Towarzystwa Mineralogicznego, 19: 189-194.
• 19. Don, J., Dumicz, M., Wojciechowska, I., Żelaźniewicz, A., 1990. Lithology and tectonics of the Orlica-Śnieżnik Dome, Sudetes - recent state of knowledge. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 197: 159-188.
• 20. Don, J., Skácel, J., Gotowała, R., 2003. The boundary zone of the East and West Sudetes on the 1: 50,000 scale geological map of the Velké Vrbno, Staré Město and Śnieżnik Metamorphic Units. Geologia Sudetica, 35: 25-59.
• 21. Dumicz, M., 1979. Tectogenesis of the metamorphosed series of the Klodzko District: a tentative explanantion. Geologia Sudetica, 14: 29-46.
• 22. Dumicz, M., 1989. The Śnieżnik Mts gneisses sequence in the light of mesostructural analysis of some areas of the Międzygórze and Gierałtów units (in Polish with English summary). Geologia Sudetica, 24: 139-189.
• 23. Faryad, S.W., Kachlík, V., 2013. New evidence of blueschist facies rocks and their geotectonic implication for Variscan sutures in the Bohemian Massif. Journal of Metamorphic Geology, 311: 63-82.
• 24. Fischer, G., 1936. Der Bau des Glatzer Schneegebirges. Jahrbuch der Preußischen Geologischen Landesanstalt, 56: 712-732.
• 25. Franke, W., Żelaźniewicz, A., Porębski, S.J., Wajsprych, B., 1993. Saxothuringian zone in Germany and Poland: differences and common features. Geologische Rundschau, 82: 583-599.
• 26. Gebauer, D., Schertl, H.-P., Brix, M., Schreyer, W., 1997. 35 Ma old ultrahigh-pressure metamorphism and evidence for very rapid exhumation in the Dora Maira Massif, Western Alps. Lithos, 41: 5-24.
• 27. Geisler, T., Schaltegger, U., Tomaschek, F., 2007. Re-equlibration of zircons in aqueous fluids and melts. Elements, 3: 43-50.
• 28. Glascock, J., Schneider, D.A., Manecki, M., 2003.Exhumation history of the Orlica-Snieznik Dome (Bohemian Massif) revealed through Ar-Ar thermochronometry. GSA, Abstracts, 35: 638.
• 29. Gordon, S.M., Schneider, D.A., Manecki, M., Holm, D.K., 2005. Exhumation and metamorphism of an ultrahigh-grade terrane: geochronometric investigations of the Sudety Mountains (Bohemia), Poland and Czech Republic. Journal of the Geological Society, 162: 841-855.
• 30. Grześkowiak, A., 2004. Genesis of diversification of the Międzygórze Structure Gneisses, Śnieżnik Metamorphic Unit. Ph.D. thesis, Archive of the Institute of Geology, Adam Mickiewicz University, Poznań, Poland.
• 31. Grześkowiak, A., Żelaźniewicz, A., 2002. On the significance of gneissic enclaves in the 500 Ma metagranite, the Lądek-Śnieżnik Metamorphic Unit, the West Sudetes. GeoLines, 14: 28-29.
• 32. Grześkowiak, A., Żelaźniewicz, A., Fanning, C.M., 2005. Early Palaeozoic syntectonic migmatization preceded Variscan metamorphism in the Orlica-Śnieżnik Dome, Sudetes: U-Pb SHRIMP Evidence. GeoLines, 19: 46-48.
• 33. Gunia, T., 1974. Microflore of Pre-Cambrian limestones of the Duszniki Zdrój Region (The Central Sudeten) (in Polish with English sum mary). Annales Societatis Geologorum Poloniae, 44: 65-91.
• 34. Gunia, T., Wierzchołowski, B., 1979. Problematical microfossils in the paragneiss of the Bystrzyckie Mts (Sudetes, Poland) (in Polish with English summary). Geologia Sudetica, 14: 8-25.
• 35. Hoskin, P.W.O., Black, L.P., 2000. Metamorphic zircon formation by solid-state recrystallization of protolith igneous zircon. Journal of Metamorphic Geology, 18: 423-439.
• 36. Hoskin, P.W.O., Schaltegger, U., 2003. The composition of zircon and igneous and metamorphic petrogenesis. Reviews in Mineralogy and Geochemistry, 53: 27-62.
• 37. Jastrzębski, M., 2005. The tectonometamorphic evolution of the marbles in the Lądek-Śnieżnik Metamorphic Unit, West Sudetes. Geologia Sudetica, 37: 1-26.
• 38. Jastrzębski, M., 2009. A Variscan continental collision of the West Sudetes and the Brunovistulian terrane: a contribution from structural and metamorphic record of the Stronie Formation, the Orlica-Śnieżnik Dome, SW Poland. International Journal of Earth Sciences (Geologische Rundschau), 98: 1901-1923.
• 39. Jastrzębski, M., Żelaźniewicz, A., Nowak, I., Murtezi, M., Larionov, A., 2010. Protolith age and provenance of metasedimentary rocks in Variscan allochthon units: U-Pb SHRIMP zircon data from the Orlica-Śnieżnik Dome, West Sudetes. Geological Magazine, 147: 416-433.
• 40. Jastrzębski, M., Budzyń, B., Stawikowski, W., 2015. Structural, metamorphic and geochronological record in the Goszów quartzites of the Orlica-Śnieżnik Dome (SW Po land): implications for the polyphase Variscan tectonometamorphism of the Saxothuringian terrane. Geological Journal, doi: 10.1002/gj.2647
• 41. Klemd, R., Bröcker, M., 1999. Fluid influence on mineral reactions in ultrahigh-pressure granul ites: a case study in the Śnieżnik Mts. (West Sudetes, Poland). Contributions to Mineralogy and Petrology, 136: 358-73.
• 42. Klemd, R., Bröcker, M., Schramm, J., 1995. Characterization of amphibolite-facies fluids of Variscan eclogites from the Orlica- Śnieżnik dome (Sudetes, SW Poland). Chemical Geology, 119: 101-113.
• 43. Kröner A., Štípská, P., Schulmann, K., Jaeckel, P., 2000. Chronological constraints on the pre-Variscan evolution of the northeastern margin of the Bohemian Massif, Czech Republic. Geological Society Special Publications, 179: 175-198.
• 44. Lackey, J.S., Valley, J.W., Hinke, H.J., 2006. Deciphering the source and contamination history of peraluminous magmas using 18O of accessory minerals: examples from garnet-bearing plutons of the Sierra Nevada batholiths. Contributions to Mineralogy and Petrology, 151: 20-44.
• 45. Lange, U., Bröcker, M., Mezger, K., Don, J., 2002. Geochemistry and Rb-Sr geochronology of a ductile shear zone in the Orlica-Śnieżnik dome (West Sudetes, Poland). International Journal of Earth Sciences, 91: 1005-1016.
• 46. Lange, U., Bröcker, M., Armstrong, R., Żelaźniewicz, A., Trapp, E., Mezger, K., 2005. The orthogneisses of the Orlica-Śnieżnik complex (West Sudetes, Poland): geochemical characteristics, the importance of pre-Variscan migmatization and constraints on the cooling history. Journal of the Geological Society, 162: 973-984.
• 47. Lucassen, F., Franz, G., Rhede, D., Wirth, R., 2010. Ti-Al zoning of experimentally grown titanite in the system CaO-Al2O3- TiO2-SiO2-NaCl-H2O-(F): evidence for small-scale fluid heterogeneity. American Mineralogist, 95: 1365-1378.
• 48. Ludwig, K. R., 2001. SQUID 1.02, A User Manual, A Geochronological Toolkit for Microsoft Excel. Berkeley Geochronology Center Special Publication, 2.
• 49. Ludwig, K.R., 2003. Isoplot/EX version 3.0, A Geochronological Toolkit for Microsoft Excel. Berkeley Geochronology Center Special Publication, 4.
• 50. Maluski, H., Rajlich, P., Soucek, J., 1995. Pre-Variscan, Variscan and Early Alpine thermo-tectonic history of the north-eastern Bohemian Massif: an 40Ar/39Ar study. Geologische Rundschau, 84: 345-358.
• 51. Marheine, D., Kachlík, V., Maluski, H., Patočka, F., Żelaniewicz, A., 2002. The 40Ar/39Ar ages from the West Sudetes (NE Bohemian Massif): constraints on the Variscan polyphase tectonothermal development. Geological Society Special Publications, 201: 133-155.
• 52. Markl, G., Piazolo, S., 2004. Stability of high-Al titanite from low-pressure calcsilicates in light of fluid and host-rock composition. American Mineralogist, 84: 37-47.
• 53. Mazur, S., Szczepański, J., Turniak, K., McNaughton, N., 2012. Location of the Rheic suture in the eastern Bohemian Massif: evidence from detrital zircon data. Terra Nova, 24: 199-206.
• 54. Mazur, S., Turniak, K., Szczepański, J., McNaughton, N.J., 2013. Vestiges of Saxothuringian crust in the Central Sudetes, Bohemian Massif: Zircon evidence of a recycled subducted slab provenance. Gondwana Research, 27: 825-839.
• 55. Miller, C.F., Stoddard, E.F., 1978. Origin of garnet in granitic rocks: an example of the role of Mn from the Old Woman-Piute range, California. Geological Association of Canada/Mineral Association of Canada, Abstract Programs, 3: 456.
• 56. Miller, C.F., Stoddard, E.F., 1981. The role of manganese in the paragenesis of magmatic garnet: an example from the Old Woman-Piute Range, California. Journal of Geology, 89: 233-246.
• 57. Murtezi, M., 2006. The acid metavolcanic rocks of the Orlica-Śnieżnik Dome (Sudetes): their origin and tectono-metamorphic evolution. Geologia Sudetica, 38: 1-38.
• 58. Nemchin, A.A., Pidgeon, R.T., 1997. Evolution of the Darling Range Batholith, Yilgarn Craton, Western Austral ia: a SHRIMP zircon study. Journal of Petrology, 38: 625-649.
• 59. Oliver, G.J.H., Corfu, F., Krogh, T.E., 1993. U-Pb ages from SW Poland: evidence for a Caledonian suture zone between Baltica and Gondwana. Journal of the Geological Society, 150: 355-369.
• 60. Owen, J.V., Marr, R.A., 1999. Contrasting garnet parageneses in a composite Grenvillian granitoid pluton. Newfoundland Mineralogical Magazine, 54: 367-380.
• 61. Paces, J. B., Miller, J. D., 1993. Precise U-Pb ages of Duluth Complex and related mafic intrusions, northeastern Minnesota: geochronological insights to physical, petrogenetic, paleomagnetic, and tectonomagmatic process associated with the 1.1 Ga Midcontinent Rift System. Journal of Geophysical Research, 98: 13997-14013.
• 62. Peřestý, V., Lexa, O., Jeřábek, P., Racek, M., 2015. Early Variscan (and pre-Variscan) evolution of the western part of the Teplá-Barrandian Unit. CETeG 2015 Field Guide, Czech Geological Survey: 1-30.
• 63. Pidgeon, R.T., Compston, W., 1992. A SHRIMP ion microprobe study of inherited and magmatic zircons from four Scottish Caledonian granites. Transactions of the Royal Society of Edi nt burgh: Earth Sciences, 83: 473-483.
• 64. Pin, C., Kryza, R., Oberc-Dziedzic, T., Mazur, S., Turniak, K., Waldhausrová, J., 2007. The diversity and geodynamic significance of Late Cambrian (ca. 500 Ma) felsic anorogenic magmatism in the northern part of the Bohemian Massif: a review based on Sm-Nd isotope and geochemical data. GSA Special Paper, 423: 209-229.
• 65. Plank, T., 1987. Magmatic garnets form the Cardigan pluton and the Acadian thermal event in southwest New Hampshire. American Mineralogist, 72: 681-688.
• 66. Pressler, R.E., Schneider, D.A., Petronis, M.S., Holm, D.K., Geissman, J.W., 2007. Pervasive horizontal fabric and rapid vertical extrusion: Lateral overturning and margin sub-parallel flow of deep crustal migmatites, northeastern Bohemian Massif. Tectonophysics, 443: 19-36.
• 67. Přikryl, R., Schulmann, K., Melka, R., 1996. Perpendicular fabrics in the Orlické hory orthogneisses (western part of the Orlice-Sněžník dome, Bohemian massif) due to high temperature E-W deformational event and late lower temperature N-S overprint. Journal of the Czech Geological Society, 41: 156-166.
• 68. Redlińska-Marczyńska, A., 2011. Gierałtów versus Śnieżnik gneisses - what is the real difference? Geologos, 17: 71-96.
• 69. Redlińska-Marczyńska, A., Żelaźniewicz, A., 2011. Gneisses in the Orlica-Śnieżnik Dome, West Sudetes: a single batholitic protolith or a more complex origin? Acta Geologica Polonica, 61 : 307-339.
• 70. Sawicki, L. 1995. Geo I ogi cal map of Lower Silesia with adj acent Czech and German territories 1:100 000. Polish Geological Institute, Warszawa.
• 71. Schaltegger, U., Fanning, C.M., Gunther, D., Maurin, J.C., Schulmann, K., Gebauer, D., 1999. Growth, annealing and recrystallization of zircon and preservation of monazite in high-grade metamorphism: conventional and in situ U-Pb isotope, cathodoluminescence and microchemical evidence. Contribution to Mineralogy and Petrology, 134: 186-201.
• 72. Schneider, D.A., Zahniser, S.J., Clascock, J.M., Gordon, S.M., Manecki, M., 2006. Thermochronology of the West Sudetes (Bohemian Massif): rapid and repeated eduction in the eastern Variscides, Poland and Czech Republic. American Journal of Science, 306: 846-873.
• 73. Schulmann, K., Lexa, O., Štípská, P., Racek, M., Tajčmanová, L., Konopásek, J., Edel, J.-B., Peschler, A., Lehmann, J., 2008. Vertical extrusion and horizontal spreading of orogenic lower crust: a key exhumation mechanism in large hot orogens? Journal of Metamorphic Geology, 26: 273-297.
• 74. Skrzypek, E., Schulmann, K., Štípská, P., Chopin, F., Lehmann, J., Lexa, O., Haloda, J., 2011. Tectono-metamorphic history recorded in garnet porphyroblasts: insights from thermodynamic modelling and electron backscatter diffraction analysis of inclusion trails. Journal of Metamorphic Petrology, 29: 473-496.
• 75. Skrzypek, E., Lehmann, J., Szczepański, J., Anczkiewicz, R., Štípská, P., Schulmann, K., Kröner, A., Białek, D., 2014. Time-scale of deformation and intertectonic phases revealed by P-T-D-t relationships in the orogenic middle crust of the Orlica-Śnieżnik Dome, Poli sh/Czech Central Sudetes. Journal of Metamorphic Geology, 32: 981-1003.
• 76. Smulikowski, K., 1973. Le roches metamorphiques du Mont Śnieżnik et la region de Lądek. Revue des problemes geologiques des zones profondes de l'ecorce terrestre en Basse Silesie: 77-102. Wyd. Geol., Warszawa.
• 77. Smulikowski, K., 1976. Ultramafic rocks from the vicinity of Złoty Stok (Lower Silesia). Bulletin de l'Academie Polonaise des Sciences, Série de les Sciences de la Terre, Warszawa, 24: 244-251.
• 78. Song, Y., Xu, H., Zhang, J., Wang, D., Liu, E., 2014. Syn-exhumation partial melting and melt segregation in the Sulu UHP terrane: Evidences from leucosome and pegmatitic vein of migmatite. Lithos, 202-203: 55-75.
• 79. Spear, F.S., 1993. Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths. Mineralogical Society of America, Washington, D. C.
• 80. Stawikowski, W., 2006. The problem of garnet composition in eclogite-bearing gneisses from the Śnieżnik Metamorphic Unit. GeoLines, 20: 122.
• 81. Štípská, P., Schulmann, K., Kröner, A., 2004. Vertical extrusion and middle crustal spreading of omphacite granulite: a model of syn-convergent exhumation (Bohemian Massif, Czech Republic). Journal of Metamorphic Geology, 22: 179-98.
• 82. Štípská, P.,Chopin, F., Skrzypek, E., Schulmann, K., Pitra, P., Lexa, O., Martelat, J.E., Bolinger, C., Žáčková, E., 2012. The juxtaposition of eclogite and mid-crustal rocks in the Orlica-Śnieżnik Dome, Bohemian Massif. Journal of Metamorphic Geology, 30: 213-234.
• 83. Suess, F.E., 1912. Die moravischen Fenster und ihre Beziehung zum Grundgebirge der Hohen Gesenke. Denkschriften der Österreichischen Akademie der Wissenschaften, MathematikNatur, 88: 541-631.
• 84. Teisseyre, H., 1957. Budowa geologiczna okolic Międzygórza (in Polish). In: Przewodnik do XXX Zjazdu Polskiego Towarzystwa Geologicznego w Ziemi Kłodzkiej (ed. H. Teisseyre): 54-72.
• 85. Teisseyre, H., 1973. Geology of the Śnieżnik Mountain Group. In: Revue des problèmes géologiques des zones profondes de l'écorce terrestre en Basse Silésie (ed. K. Smulikowski): 59-73. Wyd. Geol., Warszawa.
• 86. Tera, F., Wasserburg, G.J., 1972. U-Th-Pb systemati cs in three Apollo 14 basalts and the problem of initial Pb in lunar rocks. Earth and Planetary Science Letters, 14: 281-304.
• 87. Turniak, K., Mazur, S., Wysoczański, R., 2000. SHRIMP zircon geochronology and geochemistry of the Orlica-Śnieżnik gneisses (Variscan belt of Central Europe) and their tectonic implications. Geodinamica Acta, 13: 293-312.
• 88. Van Breemen, O., Aftalion, M., Bowes, D.R., Dudek, A., Misař, Z., Povondra, P., Vraná, S.,1982. Geochronological studies of the Bohemian Massif, Czechoslovakia, and their significance in the evolution of Central Europe. Transactions of the Royal Society of Edinburgh, Earth Sciences, 73: 89-108.
• 89. Vavra, G., 1994. Systematics of internal zircon morphology in major Variscan granitoid types. Contributions to Mineralogy and Petrology, 117: 331-344.
• 90. Williams, I., 1998. U-Th-Pb geochronology by ion microprobe. Reviews in Economic Geology, 7: 1-35.
• 91. Williams, I.S., Hergt, J.M., 2000. U-Pb dating of Tasmanian dolerites: a cautionary tale of SHRIMP analysis of high-U zircon. In: Beyond 2000: New frontiers in Isotope Geoscience, Lorne, Abstracts and Proceedings (eds. J.D. Woodhead, J.M. Hergt and W.P. Noble): 185-188.
• 92. Żelaźniewicz, A., 1984. Synmetamorphic penetrative mylonitization in orthogneisses of the Bystrzyca Mts, Sudetes. Acta Geologica Polonica, 34: 111-130.
• 93. Żelaźniewicz, A., 1988. Orthogneisses due to irrotational extension, a case from the Sudetes, NE Bohemian Massif. Geologische Rundschau, 77: 671-682.
• 94. Żelaźniewicz, A., 1991. Uwagi o deformacji ortognejsów oczkowych w kopule orlicko-śnieżnickiej (in Polish). In: Następstwo serii skalnych masywu Śnieżnika w świetle kartografii geologicznej, analizy strukturalnej i badań radiometrycznych. Konferencja terenowa Lądek Zdrój 18-19 października 1991: 122-136. Wrocław.
• 95. Żelaźniewicz, A., Bakun-Czubarow, N., 2002. A polyphase exhumation of the ulira-high Peclogites from Nowa Wieś in the Międzygórze unit, the Sudetes. GeoLines, 14: 107-108.
• 96. Żelaźniewicz, A., Mazur, S., Szczepański, J. 2002. The Lądek-Śnieżnik Metamorphic Unit - recent state of knowledge. GeoLines, 14: 115-125.
• 97. Żelaźniewicz, A., Nowak, I., Larionov, A.N., Presnyakov, S., 2006. Syntectonic lower Ordovician migmatite and post-tectonic Upper Visean syenite in thewestern limb of the Orlica-Śnieżnik Dome, West Sudetes: U-Pb SHRIMP data from zircons. Geologia Sudetica, 38: 63-80.
• 98. Żelaźniewicz, A., Kromuszczyńska, O., Biegała, N., 2013. Quartz c-axis fabrics in constrictionally strained orthogneisses: implications for the evolution of the Orlica-Śnieżnik Dome, the Sudetes, Poland. Acta Geologica Polonica, 63: 697-722.
• 99. Żelaźniewicz, A., Budzyń, B., Ilnicki, S., Jastrzębski, M., Murtezi, M., Redlińska-Marczyńska, A., Stawikowski, W., Szczepański, J., 2014a. The CETeG 2014 excursion to crystalline basement of the Orlica-Śnieżnik Dome, the Sudetes. Geologia Sudetica, 42: 125-136.
• 100. Żelaźniewicz, A., Jastrzębski, M., Redlińska-Marczyńska, A., Szczepański, J., 2014b. The Orlica-Śnieżnik Dome, the Sudetes, in 2002 and 12 years later. Geologia Sudetica, 42: 105-123.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.