International Journal of Earth Sciences

, Volume 98, Issue 3, pp 517–532 | Cite as

Magmatic history and geophysical signature of a post-collisional intrusive center emplaced near a crustal-scale shear zone: the Plechý granite pluton (Moldanubian batholith, Bohemian Massif)

  • Kryštof Verner
  • Jiří Žák
  • Jaroslava Pertoldová
  • Josef Šrámek
  • Jiří Sedlák
  • Jakub Trubač
  • Patricie Týcová
Original Paper

Abstract

The Plechý pluton, southwestern Bohemian Massif, represents a late-Variscan, complexly zoned intrusive center emplaced near the crustal-scale Pfahl shear zone; the pluton thus provides an opportunity to examine the interplay among successive emplacement of large magma batches, magmatic fabric acquisition, and the late-Variscan stress field associated with strike-slip shearing. The magmatic history of the pluton started with the emplacement of the porphyritic Plechý and Haidmühler granites. Based on gravity and structural data, we interpret that the Plechý and Haidmühler granites were emplaced as a deeply rooted, ∼NE–SW elongated body; its gross shape and internal fabric (steep ∼NE–SW magmatic foliation) may have been controlled by the late-Variscan stress field. The steep magmatic foliation changes into flat-lying foliation (particularly recorded by AMS) presumably as a result of divergent flow. Magnetic lineations correspond to a sub-horizontal ∼NE–SW finite stretch associated with the divergent flow. Subsequently, the Třístoličník granite, characterized by steep margin-parallel magmatic foliation, was emplaced as a crescent-shaped body in the central part of the pluton. The otherwise inward-younging intrusive sequence was completed by the emplacement of the outermost and the most evolved garnet-bearing granite (the Marginal granite) along the southeastern margin of the pluton.

Keywords

Anisotropy of magnetic susceptibility (AMS) Bohemian Massif Emplacement Granite Pluton 

Notes

Acknowledgments

We would like to gratefully acknowledge the contribution of Teresa Román-Berdiel and Wolfgang Siebel through their very constructive and detailed reviews, which greatly assisted in improving the original manuscript. Associate Editor Marlina Elburg is acknowledged for her helpful comments and careful editorial handling of the manuscript. John Bartley, Michael Petronis, Jean Luis Vigneresse, Stanislav Vrána, and Zdeněk Pertold are thanked for their valuable comments on various versions of the manuscript. Marta Chlupáčová and František Hrouda (AGICO Ltd., Brno, Czech Republic) are thanked for discussions and for assistance with measuring AMS in the Laboratory of Rock Magnetism, AGICO Ltd., Brno, Czech Republic. We also wish to thank František Holub for discussions and for his assistance in the interpretation of the geochemical data from the Plechý pluton. The management of the Šumava National Park is thanked for collaboration, constant support, and interest in our work. This research was funded by the Czech Geological Survey and Ministry of Environment Research Project No. 6201 (to J. Babůrek) and in part by the Ministry of Education, Youth and Sports of the Czech Republic Research Plan No. MSM0021620855.

Supplementary material

531_2007_285_MOESM1_ESM.pdf (27 kb)
ESM1 (PDF 28 kb)

References

  1. Améglio L, Vigneresse JL (1999) Geophysical imaging of the shape of granitic intrusions at depth: a review. In: Castro A, Fernández C, Vigneresse JL (eds) Understanding granites: integrating new and classical techniques, vol 168. Geol Soc London, Special Publications, pp 39–54Google Scholar
  2. Aranguren A (1997) Magnetic fabric and 3D geometry of the Hombreiro–Sta. Eulalia pluton: implications for the Variscan structures of eastern Galicia, NW Spain. Tectonophysics 273:329–344CrossRefGoogle Scholar
  3. Aranguren A, Tubia JM, Bouchez JL, Vigneresse JL (1996) The Guitiriz granite, Variscan belt of northern Spain: extension-controlled emplacement of magma during tectonic escape. Earth Planet Sci Lett 139:165–176CrossRefGoogle Scholar
  4. Aranguren A, Cuevas J, Tubia JM, Román-Berdiel T, Casas-Sainz A, Casas-Ponsati A (2003) Granite laccolith emplacement in the Iberian arc: AMS and gravity study of the La Tojiza pluton (NW Spain). J Geol Soc London 160:435–445CrossRefGoogle Scholar
  5. Bankwitz P, Bankwitz E, Thomas R, Wemmer K, Kämpf, H (2004) Age and depth evidence for pre-exhumation joints in granite plutons: fracturing during the early cooling stage of felsic rock. In: Cosgrove JW and Engelder T (eds) The Initiation, propagation, and arrest of joints and other fractures, vol 231. Geol Soc London, Special Publications, pp 25–47Google Scholar
  6. Benn K, Roest WR, Rochette P, Evans NG, Pignotta G (1999) Geophysical and structural signatures of syntectonic batholith construction: the South Mountain Batholith, Meguma Terrane, Nova Scotia. Geophys J Int 136:144–158CrossRefGoogle Scholar
  7. Blížkovský M, Novotný A (1982) Gravity map of the Bohemian Massif. Geofyzika, BrnoGoogle Scholar
  8. Bouchez JL (1997) Granite is never isotropic: an introduction to AMS studies of granitic rocks. In: Bouchez JL, Hutton DHW and Stephens WE (eds) Granite: from segregation of melt to emplacement fabrics. Kluwer Academic Publishers, Amsterdam, pp 95–112Google Scholar
  9. Boynton WV (1984) Geochemistry of the rare-earth elements: meteorite studies. In: Henderson P (eds) Rare earth element geochemistry. Elsevier, Amsterdam, pp 63–114Google Scholar
  10. Brandmayr M, Dallmeyer RD, Handler R, Wallbrecher E (1995) Conjugate shear zones in the Southern Bohemian Massif (Austria): implications for Variscan and Alpine tectonothermal activity. Tectonophysics 248:97–116CrossRefGoogle Scholar
  11. Breiter K, Koller F (2005) New interesting types of granitoids in the Three-corner-country (Dreiländereck) of Austria, Czech Republic and Germany. Mitt Österr Miner Ges 151:33Google Scholar
  12. Büttner S (1999) The geometric evolution of structures in granite during continuous deformation from magmatic to solid-state conditions: an example from the central European Variscan Belt. Am Mineral 84:1781–1792Google Scholar
  13. Büttner S (2007) Late-Variscan stress-field rotation initiating escape tectonics in the south-western Bohemian Massif: a far field response to late-orogenic extension. J Geosci 52:29–43CrossRefGoogle Scholar
  14. Callahan CN, Markley MJ (2003) A record of crustal-scale stress: igneous foliation and lineation in the Mount Waldo Pluton, Waldo County, Maine. J Struct Geol 25:541–555CrossRefGoogle Scholar
  15. Cruden AR, Sjöström H, Aaro S (1999) Structure and geophysics of the Gasborn granite, central Sweden: an example of fracture-fed asymmetric pluton emplacement. In: Castro A, Fernández C and Vigneresse JL (eds) Understanding granites: integrating new and classical techniques, vol 168. Geol Soc London, Special Publications, pp 141–160Google Scholar
  16. Edel JB, Schulmann K, Holub FV (2003) Anticlockwise and clockwise rotations of the Eastern Variscides accommodated by lithospheric wrenching: palaeomagnetic and structural evidence. J Geol Soc London 160:209–218CrossRefGoogle Scholar
  17. Finger F, Roberts MP, Haunschmid B, Schermaier A, Steyrer HP (1997) Variscan granitoids of central Europe: their typology, potential sources and tectonothermal relations. Miner Petrol 61:67–96CrossRefGoogle Scholar
  18. Frank W (1994) Geochronology and evolution of the South Bohemian Massif. Mitt Österr Miner Ges 139:41–43Google Scholar
  19. Gerbi C, Johnson SE, Paterson SR (2004) Implications of rapid, dike-fed pluton growth for host-rock strain rates and emplacement mechanisms. J Struct Geol 26:583–594CrossRefGoogle Scholar
  20. Gerdes A (2001) Magma homogenization during anatexis, ascent and/or emplacement? Constraints from the Variscan Weinsberg Granites. Terra Nova 13:305–312CrossRefGoogle Scholar
  21. Gerdes A, Worner G, Henk A (2000) Post-collisional granite generation and HT-LP metamorphism by radiogenic heating: the Variscan South Bohemian Batholith. J Geol Soc London 157:577–587CrossRefGoogle Scholar
  22. Gerdes A, Friedl G, Parrish RR, Finger F (2003) High-resolution geochronology of Variscan granite emplacement—the South Bohemian Batholith. J Czech Geol Soc 48:53–54Google Scholar
  23. Holub FV (1997) Ultrapotassic plutonic rocks of the durbachite series in the Bohemian Massif: petrology, geochemistry, and petrogenetic interpretation. Bull Geol Sci Econ Geol Mineral 31:5–26Google Scholar
  24. Holub FV, Klečka M, Matějka D (1995) Moldanubian zone: igneous activity. In: Dallmeyer D, Franke W, Weber K (eds) Pre-Permian geology of the Central and Western Europe. Springer, Berlin, pp 444–452Google Scholar
  25. Horn P, Köhler H, Müller-Sohnius D (1986) Rb–Sr Isotopengeochemie hydrothermaler Quarze des Bayerischen Pfahls und eines Flußspat-Schwerspat-Ganges von Nabburg-Wölsendorf, Bundesrepublik Deutschland. Chem Geol 58:259–272CrossRefGoogle Scholar
  26. Hrouda F, Jelínek V, Hrušková L (1990) A package of programs for statistical evaluation of magnetic data using IBM-PC computers. EOS transactions, Am Geoph Union, SF, 1289Google Scholar
  27. Janoušek V, Holub F (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 Assoc 118:75–86CrossRefGoogle Scholar
  28. Janoušek V, Vrána S, Erban V (2002) Petrology, geochemical character and petrogenesis of a Variscan post-orogenic granite: case study from the Ševětín Massif, Moldanubian Batholith, Southern Bohemia. J Czech Geol Soc 47:1–22Google Scholar
  29. Jelínek V (1978) Statistical processing of anisotropy of magnetic susceptibility measured on groups of specimens. Stud Geophys Geod 22:50–62CrossRefGoogle Scholar
  30. Jelínek V (1981) Characterization of the magnetic fabric of rocks. Tectonophysics 79:63–67CrossRefGoogle Scholar
  31. Jelínek V, Pokorný J (1997) Some new concepts in technology of transformer bridges for measuring susceptibility anisotropy of rocks. Phys Chem Earth 22:179–181CrossRefGoogle Scholar
  32. Kalt A, Berger A, Blümel P (1999) Metamorphic evolution of cordierite-bearing migmatites from the Bayerische Wald (Variscan belt, Germany). J Petrol 40:601–627CrossRefGoogle Scholar
  33. Kalt A, Corfu F, Wijbrans JR (2000) Time calibration of a P-T path from a Variscan high-temperature low-pressure metamorphic complex (Bayerische Wald, Germany), and the detection of inherited monazite. Contrib Mineral Petrol 138:143–163CrossRefGoogle Scholar
  34. Klečka M, Matějka D (1995) Moldanubian Batholith—an example of the evolution of the Late Palaeozoic granitoid magmatism in the Moldanubian Zone, Bohemian Massif (Central Europe). In: Srivastava RK, Chandra R (eds). Magmatism in relation to diverse tectonic settings. Oxford and IBH Publishing, New Delhi, pp 353–373Google Scholar
  35. Klein T, Kiehm S, Siebel W, Shang CK, Rohrmüller J, Dörr W, Zulauf G (2007) Age and emplacement of late-Variscan granites of the western Bohemian Massif with main focus on the Hauzenberg granitoids (European Variscides, Germany). Lithos. doi:10.1016/j.lithos.2007.07.025
  36. Klötzli US, Koller F, Scharbert S, Höck V (2001) Cadomian lower-crustal contributions to granite petrogenesis (South Bohemian Pluton, Lower Austria): constraints from zircon typology, and geochronology, whole-rock, and feldspar Pb-Sr isotope systematics. J Petrol 42:1621–1642CrossRefGoogle Scholar
  37. Kratinová Z, Závada P, Hrouda F, Schulmann K (2006) Non-scaled analogue modelling of AMS development during viscous flow: a simulation on diapir-like structures. Tectonophysics 418:51–61CrossRefGoogle Scholar
  38. Liew TC, Finger F, Höck V (1989) The Moldanubian granitoid plutons of Austria: chemical and isotopic studies bearing on their environmental setting. Chem Geol 76:41–55CrossRefGoogle Scholar
  39. Mattern F (2001) Permo-Silesian movements between Baltica and western Europe: tectonics and ‘basin families’. Terra Nova 13:368–375CrossRefGoogle Scholar
  40. Miller RB, Paterson SR (2001) Construction of mid-crustal sheeted plutons: examples from the north Cascades, Washington. Geol Soc Am Bull 113:1423–1442CrossRefGoogle Scholar
  41. Nagata T (1961) Rock Magnetism. Maruzen, Tokyo 350 ppGoogle Scholar
  42. Ott WD (ed) (1988) Geological map and explanations 1:25,000 sheet 7149 Freyung and 7148 Bischofsreut. Bayerisches Geologisches Landesamt, MünchenGoogle Scholar
  43. Ott WD (ed) (1992) Geological map and explanations 1:25,000 sheet 7248/49 Jandelsbrunn. Bayerisches Geologisches Landesamt, MünchenGoogle Scholar
  44. Paterson SR, Fowler TK (1993) Re-examining pluton emplacement processes. J Struct Geol 15:191–206CrossRefGoogle Scholar
  45. Paterson SR, Miller RB (1998) Mid-crustal magmatic sheets in the Cascades Mountains, Washington: implications for magma ascent. J Struct Geol 20:1345–1363CrossRefGoogle Scholar
  46. Paterson SR, Vernon RH, Tobisch OT (1989) A review of criteria for identification of magmatic and tectonic foliations in granitoids. J Struct Geol 11:349–363CrossRefGoogle Scholar
  47. Paterson SR, Vernon RH, Fowler TK (1991) Aureole tectonics. In: Kerrick DM (ed) Contact metamorphism. Mineralogical Society of America, Rev Mineral 26, pp 673–722Google Scholar
  48. Paterson SR, Fowler TK, Schmidt KL, Yoshinobu AS, Yuan ES, Miller RB (1998) Interpreting magmatic fabric patterns in plutons. Lithos 44:53–82CrossRefGoogle Scholar
  49. Pertoldová J (ed) (2006) Explanations to Czech Geological Survey map 1:25000, sheet 32–141 Nové Údolí and sheet 32–142 Nová Pec. Czech Geol Surv, PragueGoogle Scholar
  50. Pertoldová J, Verner K, Nývlt D (2006) Czech Geological Survey map 1:25000, sheet 32–141 Nové Údolí and sheet 32–142 Nová Pec. Czech Geol Surv, PragueGoogle Scholar
  51. Peucker-Ehrenbrink B, Behr HJ (1993) Chemistry of hydrothermal quartz in the post-Variscan “Bavarian Pfahl” system, F.R. Germany. Chem Geol 103:85–102CrossRefGoogle Scholar
  52. Pharaoh TC (1999) Palaeozoic terranes and their lithospheric boundaries within the Trans-European Suture Zone (TESZ): a review. Tectonophysics 314:17–41CrossRefGoogle Scholar
  53. Schaltegger U (1997) Magma pulses in the Central Variscan Belt: episodic melt generation and emplacement during lithospheric thinning. Terra Nova 9:242–245CrossRefGoogle Scholar
  54. Scharbert S (1998) Some geochronological data from the South Bohemian Pluton in Austria: a critical review. Acta Univ Carol Geol 42:114–118Google Scholar
  55. Siebel W, Chen F, Blaha U, Rohrmüller J, Shang C (2004) Timing of mylonitization along the Bavarian Pfahl zone, Bohemian Massif: implications from U-Pb and Pb-Pb radiometric ages. Geochim Cosmochim Acta 68:A546Google Scholar
  56. Siebel W, Blaha U, Chen F, Rohrmuller J (2005a) Geochronology and geochemistry of a dyke–host rock association and implications for the formation of the Bavarian Pfahl shear zone, Bohemian Massif. Int J Earth Sci 94:8–23CrossRefGoogle Scholar
  57. Siebel W, Reitter E, Wenzel T, Blaha U (2005b) Sr isotope systematics of K-feldspars in plutonic rocks revealed by the Rb–Sr microdrilling technique. Chem Geol 222:183–199CrossRefGoogle Scholar
  58. Siebel W, Thiel M, Chen F (2006) Zircon geochronology and compositional record of late- to post-kinematic granitoids associated with the Bavarian Pfahl zone (Bavarian Forest). Mineral Petrol 86:45–62CrossRefGoogle Scholar
  59. Tropper P, Deibl I, Finger F, Kaindl R (2006) P–T–t evolution of spinel–cordierite–garnet gneisses from the Sauwald Zone (Southern Bohemian Massif, Upper Austria): is there evidence for two independent late-Variscan low- P/high-T events in the Moldanubian Unit? Int J Earth Sci 95:1019–1037CrossRefGoogle Scholar
  60. Vellmer C, Wedepohl KH (1994) Geochemical characterization and origin of granitoids from the South Bohemian Batholith in Lower Austria. Contrib Mineral Petrol 118:13–32CrossRefGoogle Scholar
  61. Verner K, Žák J, Hrouda F, Holub F (2006) Magma emplacement during exhumation of the lower- to mid-crustal orogenic root: the Jihlava syenitoid pluton, Moldanubian Unit, Bohemian Massif. J Struct Geol 28:1553–1567CrossRefGoogle Scholar
  62. Verner K, Žák J, Nahodilová R, Holub F (2007) Magmatic fabrics and emplacement of the cone-sheet-bearing Knížecí Stolec durbachitic pluton (Moldanubian Unit, Bohemian Massif): implications for mid-crustal reworking of granulitic lower crust in the Central European Variscides. Int J Earth Sci. doi:10.1007/s00531-006-0153-z
  63. Vernon RH (2000) Review of microstructural evidence of magmatic and solid-state flow. Electron Geosci 5:1–23Google Scholar
  64. Vigneresse JL (1990) Use and misuse of geophysical data to determine the shape at depth of granitic intrusions. Geol J 25:248–260CrossRefGoogle Scholar
  65. Vrána S (1988) The Moldanubian Zone in Southern Bohemia: polyphase evolution of imbricated crustal and upper mantle segments. In: Proceedings of the first international conference on the Bohemian Massif. Czech Geological Survey, Prague, pp 331–336Google Scholar
  66. Vrána S, Blümel P, Petrakakis K (1995) Moldanubian Zone: metamorphic evolution. In: Dallmeyer D, Franke W, Weber K (eds) Pre-Permian geology of the central and western Europe. Springer, Berlin, pp 453–466Google Scholar
  67. Willner AP, Sebazungu E, Gerya TV, Maresch WV, Krohe A (2002) Numerical modelling of PT-paths related to rapid exhumation of high-pressure rocks from the crustal root in the Variscan Erzgebirge Dome (Saxony/Germany). J Geodyn 33:281–314CrossRefGoogle Scholar
  68. Winchester JA (2002) Palaeozoic amalgamation of Central Europe: new results from recent geological and geophysical investigations. Tectonophysics 360:5–21CrossRefGoogle Scholar
  69. Žák J, Holub FV, Verner K (2005a) Tectonic evolution of a continental magmatic arc from transpression in the upper crust to exhumation of mid-crustal orogenic root recorded by episodically emplaced plutons: the Central Bohemian Plutonic Complex (Bohemian Massif). Int J Earth Sci 94:385–400CrossRefGoogle Scholar
  70. Žák J, Schulmann K, Hrouda F (2005b) Multiple magmatic fabrics in the Sázava pluton (Bohemian Massif, Czech Republic): a result of superposition of wrench-dominated regional transpression on final emplacement. J Struct Geol 27:805–822CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Kryštof Verner
    • 1
    • 2
  • Jiří Žák
    • 1
    • 3
  • Jaroslava Pertoldová
    • 1
  • Josef Šrámek
    • 4
  • Jiří Sedlák
    • 5
  • Jakub Trubač
    • 3
  • Patricie Týcová
    • 6
  1. 1.Czech Geological SurveyPragueCzech Republic
  2. 2.Institute of Petrology and Structural Geology, Faculty of ScienceCharles UniversityPragueCzech Republic
  3. 3.Institute of Geology and Paleontology, Faculty of ScienceCharles UniversityPragueCzech Republic
  4. 4.Czech Geological SurveyBrnoCzech Republic
  5. 5.Miligal LtdBrnoCzech Republic
  6. 6.Czech Geological SurveyPragueCzech Republic

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