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Stratigraphy, Structure, and Igneous Activity

  • W. Franke
  • H. Kreuzer
  • M. Okrusch
  • U. Schüssler
  • E. Seidel
Part of the IGCP-Project 233 book series (IGCP 233)

Abstract

As laid out in Chapters V.B.1 and V.B.2, the parautochthonous Thuringian fades of the Saxothuringian Belt has been overthrust from the SE by nappes, which have survived in the core of the Vogtland Synform. These are the tectonic klippen of Münchberg, Wildenfels, and Frankenberg (in order from W to E; see Fig. 1). The klippen represent, in fact, erosional remnants of one or several nappe piles, which were originally more extensive, and possibly laterally continuous with each other. The tectonic sequence in each of these klippen is characterized by inversion of the stratigraphy and of the metamorphic grades. The lower nappes comprise (in order from bottom to top): proximal Early Carboniferous flysch, Silurian/Devonian bedded chert, and a volcanosedimentary sequence of largely Ordovician age. These very-low-grade, fossiliferous sequences are overlain by a number of metamorphic thrust sheets. This chapter describes the lithology, tectonic sequence, and internal structure of the metamorphic nappes in the klippen, and of their probable equivalents at the northwestern margin of the Moldanubian Region, from which they are derived. We set out from the Münchberg klippe, which is the largest, most differentiated and best studied example of its kind, and then briefly discuss the closely related units. Details on the metamorphic evolution are available in the contribution by Blümel (Chap. V.C.2)

Keywords

Mafic Rock Contrib Mineral Petrol Bohemian Massif Late Ordovician Metamorphic Evolution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Albat F, Grauert B, Hansen B (1989) Sr-Isotopenverteilung in einem Kleinbereichsprofil durch Gneise der Bohrung Püllersreuth (ZEV). KTB-Rep 89-3: 442Google Scholar
  2. Albat F, Grauert B, Hansen B (1990) Sr-Isotopenverteilung in Quarzmineralisationen der Bohrung Püllersreuth (ZEV). KTB-Rep 90-4: 550Google Scholar
  3. Behr HJ (1983) Intracrustal and subcrustal thrusttectonics at the northern margin of the Bohemian Massif. In: Martin H, Eder FW (eds) Intracontinental fold belts. Springer, Berlin Heidelberg New York, pp 365–4040CrossRefGoogle Scholar
  4. Behr HJ, Engel W, Franke W (1982) Variscan wildflysch and nappe tectonics in the Saxothuringian Zone (northeast Bavaria, West Germany). Am J Sci 282: 1438–1470CrossRefGoogle Scholar
  5. Behrmann JH, Lich S, Volp A, Heinisch H, Zadow A (1989) Scherkriterien im KTB: kontinuierliche Kernaufnahme duktiler Verformung von 480-2004 m Teufe. KTB-Rep 89-3: 418Google Scholar
  6. Blümel P (1983) The western margin of the Bohemian Massif in Bavaria. Fortschr Mineral 61(Beih 2): 171–195Google Scholar
  7. Bowes DR, Aftalion M (1991) U-Pb zircon isotopic evidence for early Ordovician and late Proterozoic units in the Marianske Lazne complex, Central European Hercynides. Neues Jahrb Mineral Monatsh 1991: 315–326Google Scholar
  8. Bosbach D, Stosch HG, Seidel E (1991) Magmatic and metamorphic evolution of metagabbros in the Münchberg Massif, N.E. Bavaria. Contrib Mineral Petrol 107: 112–123CrossRefGoogle Scholar
  9. Busch K (1970) Die Eklogitvorkommen des kristallinen Grundgebirges in NE-Bayern. — IV. Die Eklogite der Oberpfalz und ihr metamorpher Abbau. Neues Jahrb Mineral Abh 113: 138–178Google Scholar
  10. Chappell BW, White AJR (1974) Two contrasting granite types. Pacific Geol 8: 173–174Google Scholar
  11. Dörr W, Franke W, Kramm U (1989) U/Pb Daten von Zirkonen klastischer Sedimente — Beiträge zur Entwicklung der Böhmischen Masse. KTB-Rep 89-3: 351Google Scholar
  12. Dörr W, Kramm U, Franke W, Gehlen K von (1991) U-Pb systematics of detrital zircons from the Saxothuringian Belt: constraints on the tectonic development. Terra Abstr 3/1: 206–207Google Scholar
  13. Ducrot J, Lancelot JR, Marchand J (1983) Datation U-Pb sur zircons de l’eclogite de la Borie (Haut Allier, France) et conséquences sur l’évolution antehercynienne de l’Europe occidentale. Earth Planet Sci Lett 62: 385–394CrossRefGoogle Scholar
  14. Franke W (1984a) Late events in the tectonic history of the Saxothuringian Zone. In: Hutton DWH, Sanderson DJ (eds) Variscan tectonics of the North Atlantic Region. Blackwell, Oxford, pp 33–45Google Scholar
  15. Franke W (1984b) Variszischer Deckenbau im Räume der Münchberger Gneismasse, abgeleitet aus der Fazies, Deformation und Metamorphose im umgebenden Paläozoikum. Geotekton Forsch 68: 1–253Google Scholar
  16. Franke W (1989a) The geological framework of the KTB Drill Site, Oberpfalz. In: Emmermann R, Wohlenberg J (eds) The German Continental Deep Drilling Program (KTB). Site selection studies in the Oberpfalz and Schwarzwald. Springer, Berlin Heidelberg New York, pp 37–54CrossRefGoogle Scholar
  17. Franke W (1989b) Tectonostratigraphic units in the Variscan Belt of Central Europe. Geol Soc Am Spec Pap 230: 67–90CrossRefGoogle Scholar
  18. Franke W, Behrmann J, Moehrmann H (1992) Zur Deformationsgeschichte des Kristallins im Münchberger Deckenstapel. KTB-Rep 92-4: 225–240Google Scholar
  19. Franz G, Thomas S, Smith DC (1986) High-pressure decomposition in the Weissenstein eclogite, Münchberg Gneiss Massif, Germany. Contrib Mineral Petrol 92: 71–85CrossRefGoogle Scholar
  20. Gebauer D (1994) Ein Modell der Entwicklungsgeschichte des ostbayerischen Grundgebirges auf der Basis plattentektonischer Vorstellungen und radiometrischer Datierungen. In: Erläuterungen zur geologischen Karte von Bayern 1: 25000, B1.6439 Tännesberg. Bayer Geol Landesamt (in press)Google Scholar
  21. Gebauer D, Grünenfelder M (1979) U-Pb zircon and Rb-Sr mineral dating of eclogites and their country rocks. Example: Münchberger Gneiss Massif, northeast Bavaria. Earth Planet Sci Lett 42: 35–44CrossRefGoogle Scholar
  22. Gebauer D, Grünenfelder M (1982) Geological development of the Hercynian Belt of Europe based on age and origin of high-grade and high-pressure mafic and ultramafic rocks. Abstr 5th Int Conf on Geochronology, cosmochronology, isotope geology, Nikko Natl Park, Japan, pp 111-112Google Scholar
  23. Gottstein O (1970) K-Ar ages of granitic and ectinitic rocks of the Teplá anticlinorium. Vestn Ustred Ustavo Geol 45: 201–205Google Scholar
  24. Grauert B, Baumann A, Kleemann U (1990) Altersbestimmung einer Mylonitzone im Grenzbereich ZEV/Moldanubikum. KTB-Rep 90-4: 551Google Scholar
  25. Grauert B, Hänny R, Soptrajanova G (1974) Geochronology of a polymetamorphic and anatectic gneiss region: the Moldanubian of the area Lam-Deggendorf, eastern Bavaria, Germany. Contrib Mineral Petrol 45: 37–63CrossRefGoogle Scholar
  26. Grüner F, Morteani G (1990) Hochdruckrelikte in goldführenden Metabasiten der Hangendserie der Münchberger Gneismasse, NE-Bayern. Beih Eur Mineral 2(1): 84Google Scholar
  27. Hammerschmidt K, Franz G (1988) Eklogitbildung und Deformation der Münchberger Gneismasse. Petrologische und isotopengeochemische Daten. Fortschr Miner 66(Beih 1): 50Google Scholar
  28. Hammerschmidt K, Franz G (1992) Retrograde evolution of eclogites — evidences from microstructures and Ar-Ar white mica dates, Münchberg Massif, northeastern Bavaria. Contrib Mineral Petrol 111: 113–125CrossRefGoogle Scholar
  29. Hansen BT, Teufel S, Ahrendt H (1989) Geochronology of the Moldanubian-Saxothuringian transition zone, northeast Bavaria. In: Emmermann R, Wohlenberg J (eds) The German Continental Deep Drilling Program (KTB) Springer, Berlin Heidelberg New York, pp 55–56CrossRefGoogle Scholar
  30. Harland WB, Armstrong RL, Cox AV, Craig LE, Smith AG, Smith DG (1989) A geologic time scale. University Press, Cambridge, 263 ppGoogle Scholar
  31. Heinicke F (1987) Strukturgeologische Untersuchungen im Übergangsbereich zwischen der Zone Erbendorf-Vohenstrauß und dem Moldanubikum im Gebiet Vohenstrauß/Leuchtenberg, Oberpfalz. Diplomathesis, Univ Göttingen, 84 ppGoogle Scholar
  32. Hirschmann G, Stettner G, Weber K (1990) Stand und Probleme der geologischen Prognose für die KTB-Hauptbohrung. KTB-Report 90-4: 345Google Scholar
  33. Hofmann B, von Drach V, Köhler H (1993) Nd model ages and Sr isotope systematics of drilled material from the KTB main bore hole. KTB Report 93-2: 389–390Google Scholar
  34. Kleemann U, Stein E, Blümel P (1989) Mylonite im Grenzbereich zwischen ZEV und Moldanubikum. KTB-Report 89-3: 349Google Scholar
  35. Klemd R, Matthes S, Okrusch M (1991) High-pressure relics in meta-sediments intercalated with the Weissenstein eclogite, Münchberg gneiss complex, Bavaria. Contrib Mineral Petrol 107: 328–342CrossRefGoogle Scholar
  36. Köhler H, Müller-Sohnius D, Cammann K (1974) Rb-Sr Altersbestimmunge an Mineral-u. Gesamtgesteinsproben des Leuchtenberger und Flossenbürger Granits, NE Bayern. Neues Jahrb Mineral Abh 123: 63–85Google Scholar
  37. Kreuzer H, Seidel E (1989) Diskrete früh-devonische Ar-Ar-Alter der Hangend-Serie (Münchberger Masse). Ber DMG, Eur J Mineral 1(Beih 1): 103Google Scholar
  38. Kreuzer H, Okrusch M, Raschka H, Schüssler U, Seidel E, Vejnar Z (1989a) Ar-Ar-Datierungen am Westrand der Böhmischen Masse. KTB-Report 89-3: 427Google Scholar
  39. Kreuzer H, Seidel E, Schüssler U, Okrusch M, Lenz K-L, Raschka H (1989b) K-Ar geochronology of different tectonic units at the northwestern margin of the Bohemian Massif. Tectonophysics 157: 149–178CrossRefGoogle Scholar
  40. Kreuzer H, Müller P, Carl C, Ebadi A, Höhndorf A, Patzak M (1990a) Minerai dating on core samples from 500 to 2000 m depth of the KTB drill hole. KTB-Report 90-4: 546Google Scholar
  41. Kreuzer H, Müller P, Okrusch M, Patzak M, Schüssler U, Seidel E, Smejkal V, Vejnar Z (1990b) Ar-Ar confirmation for Cambrian, Early Devonian, and Mid-Carboniferous tectonic units at the western margin of the Bohemian Massif. Rundgespr Zeitmarken im europäischen Variszikum, 16–17 Nov 1990, Clausthal-Zellerfeld, AbstrGoogle Scholar
  42. Kreuzer H, Vejnar Z, Schüssler U, Okrusch M, Seidel E (1992) K-Ar dating in the Teplá-Domazlice Zone at the western margin of the Bohemian Massif. In: Kukal Z (ed) Proc 1st Int Conf on the Bohemian Massif, Prague 1988, Czech Geol Survey Prague: 168-175Google Scholar
  43. Lich S, Behrmann J, Heinisch H, Sprenger W, Volp A, Zadow A (1990) Evidenz für plastisches Fließen mit niedriger Drehzahl in den Gneisen der kontinentalen Tiefbohrung (KTB-Vorbohrung). Kurzfassungen und Poster, 3. Symp für Tektonik, Strukturgeologie, Kristallingeologie, Graz 1990, pp 131-132Google Scholar
  44. Lister G, Price GP (1978) Fabric development in a quartz-feldspar-mylonite. Tectonophysics 49: 37–78CrossRefGoogle Scholar
  45. Lohoff B (1990) Petrographie und Geochemie von Metabasiten der Gabbroamphibolitmasse Neukirchen/Kdyne. Diploma thesis, Univ Würzburg, 87 ppGoogle Scholar
  46. Ludwig V (1968) Zur Lithologie des “Kulms” bei Erbendorf/Oberpfalz (Bayern). Neues Jahrb Geol Palaeontol Monatsh 7: 407–417Google Scholar
  47. Masch L, Koch N (1988) Deformationsstrukturen der Mylonite der Zone von Erbendorf-Vohenstrauß (ZEV) und Vergleich mit Basismyloniten der Silvretta-Decke (Graubünden). Erlanger Geol Abh 116: 81–100Google Scholar
  48. Matte P, Maluski H, Rajlich P, Franke W (1990) Terrane boundaries in the Bohemian Massif: result of large-scale Variscan shearing. Tectonophysics 177: 151–170CrossRefGoogle Scholar
  49. Matthes S (1990) Die Erbendorfer Grünschieferzone. Ber DMG, Eur J Mineral 2(Beih 2): 85–116Google Scholar
  50. Matthes S, Richter P, Schmidt K (1975) Die Eklogitvorkommen des kristallinen Grundgebirges in NE-Bayern. IX Petrographie, Geochemie und Petrogenese der Eklogite des Münchberger Gneisgebietes. Neues Jahrb Mineral Abh 126: 45–86Google Scholar
  51. Matthes S, Okrusch M, Röhr C, Schüssler U, Richter P, von Gehlen K (1995) Talc-chlorite-amphibole felses of the KTB pilot hole, Oberpfalz, Bavaria: protolith characteristics and phase relationships. Mineral and Petrol 52: 25–59CrossRefGoogle Scholar
  52. Miller H, Söllner F, Loske W (1990) U-Pb-Datierungen an Zirkonen aus Gneisen der KTB-Vorbohrung. KTB-Report 90-4: 544Google Scholar
  53. Müller-Sohnius D, von Drach V, Horn P, Köhler H (1987) Altersbestimmungen an der Münchberger Gneismasse, Nordost-Bayern. Neues Jahrb Mineral Abh 156: 175–206Google Scholar
  54. O’Brien PJ (1989) The petrology of retrograded eclogites of the Oberpfalz Forest, northeastern Bavaria, West Germany. Tectonophysics 157: 195–212CrossRefGoogle Scholar
  55. O’Brien PJ (1991) High pressure metamorphism in the NW Bohemian Massif: comparisons and contrasts between the Moldanubian Zone, Münchberg Massiv, ZEV, ZTT and Erzgebirge. KTB-Report 91-1: 1–12Google Scholar
  56. O’Brien PJ, Carswell DA, Gebauer D (1990) Eclogite formation and distribution in the European Variscides. In: Carswell DA (ed) Eclogite facies rocks. Blackie, Glasgow, Chapman & Hall, New York, pp 204–224CrossRefGoogle Scholar
  57. O’Brien PJ, Röhr C, Okrusch M, Patzak M (1992) Eclogite facies relics and a multistage breakdown in metabasites of the KTB pilot hole, NE Bavaria: implications for the Variscan tectonometamorphic evolution of the NW Bohemian Massif. Contrib Mineral Petrol 112: 261–278CrossRefGoogle Scholar
  58. Okrusch M (1969) Die Gneishornfelse um Steinach in der Oberpfalz. Eine phasenpetrologische Analyse. Contrib Mineral Petrol 22: 32–72CrossRefGoogle Scholar
  59. Okrusch M (1971) Garnet-cordierite-biotite equilibria in the Steinach Aureole, Bavaria. Contrib Mineral Petrol 32: 1–23CrossRefGoogle Scholar
  60. Okrusch M, Seidel E, Schüssler U, Richter P (1989) Geochemical characteristics of metabasites in different tectonic units of the northeast Bavarian crystalline basement. In: Emmermann R, Wohlenberg J (eds) The German Continental Deep Drilling Program (KTB), site-selection studies in the Oberpfalz and Schwarzwald. Springer, Berlin Heidelberg New York, pp 67–79CrossRefGoogle Scholar
  61. Okrusch M, Matthes S, Schmidt K (1990a) Eklogite des Münchberger Gneisgebietes. Ber DMG, Eur J Mineral 2(Beih 2): 55–84Google Scholar
  62. Okrusch M, Schüssler U, Seidel E, Kreuzer H, Raschka H (1990b) Pre-to early Variscan magmatism in the Bohemian Massif. In: Franke W, Weber K (eds) Bohemian Massif. Conf on Paleozoic orogens in central Europe, Göttingen-Giessen, Aug–Sept 1990, Field Guide, pp 25-35Google Scholar
  63. Okrusch M, Matthes S, Klemd R, O’Brien PJ, Schmidt K (1991) Eclogites at the northwestern margin of the Bohemian Massif: a review. Eur J Mineral 3: 707–730Google Scholar
  64. Oppermann U (1985) Geochemie und Petrographie der Prasinite und Amphibolite am SW-Rand der Münchberger Gneismasse, NE-Bayern. Diploma thesis, Techn Univ Braunschweig, 140 ppGoogle Scholar
  65. Patzak M (1991) Die Metabasite der KTB-Vorbohrung, Oberpfalz (NE-Bayern). Doctoral thesis, Univ Würzburg, 162 ppGoogle Scholar
  66. Patzak M, Okrusch M, Röhr C (1991) Die Metabasite der KTB-Vorbohrung: Petrographie, Geochemie, Mineralchemie und Metamorphoseentwicklung. KTB-Report 91-1: 63–82Google Scholar
  67. Pflug HD, Prössl KF (1990) Erste palynostratigraphische Ergebnisse aus der KTB-Vorbohrung. KTB-Report 90-4: 110–111Google Scholar
  68. Pflug HD, Reitz E (1987) Palynology in metamorphic rocks: indication of early land plants. Naturwissenschaften 74: 386–387CrossRefGoogle Scholar
  69. Platt JP, Behrmann JH, Cunningham PC, Dewey JF, Helman M, Parish M, Shepley M, Wallis S, Weston PJ (1989) Kinematics of the Alpine arc and the motion history of Adria. Nature 337: 158–161CrossRefGoogle Scholar
  70. Pommerenke K (1985) Geochemie und Petrographie der Amphibolite im NE-Teil der Münchberger Gneismasse, NE-Bayern. Diploma thesis, Techn Univ Braunschweig, 135 ppGoogle Scholar
  71. Puchelt H, Matthes S, Richter P (1978) Aussagemöglichkeiten der Seltenen Erden und anderer Spurenelemente für die Eklogite des Münchberger Gneisgebiets. Fortschr Mineral 56, Beih 1: 106–108Google Scholar
  72. Reinhard J (1990) Metamorphism of the metapelites in the KTB drillcore: reaction sequence and thermobarometric constraints. KTB-Report 90-4: 535Google Scholar
  73. Reitz E, Höll R (1988) Jungproterozoische Mikrofossi-lien aus der Habachformation in den mittleren Hohen Tauern und dem nordostbayerischen Grundgebirge. Jb Geol B-A Wien 131/2: 329–340Google Scholar
  74. Röhr C, Kohl J, Hacker W, Keyssner S, Müller H, Sigmund J, Stroh A, Zulauf G (1990) German Continental Deep Drilling Programm (KTB) — geological survey of the pilot hole “KTB Oberpfalz VB”. KTB-Report 90-8: B1–B55Google Scholar
  75. Schalkwijk G (1991) Metabasites in the pilot hole of the German Continental Deep Drilling Project, Windischeschenbach, Eastern Bavaria. Structures and fabrics as documents of crustal evolution. Doctoral thesis Univ Bochum: 200 ppGoogle Scholar
  76. Scheumann KH (1924a) Prävariskische Glieder des sächsisch-fichtelgebirgischen Kristallins. I. Die magmatisch-orogenetische Stellung der Frankenberger Gneisgesteine. Abh Math-Naturwiss Kl Sachs Akad Wiss 39I: 1–16Google Scholar
  77. Scheumann KH (1924b) Studien über die sächsischthüringischen Zwischengebirge I. Nachrichtenblatt Geol Paläontol Miner 1(6): 10 ppGoogle Scholar
  78. Scheumann KH (1924c) Studien über die sächsischthüringischen Zwischengebirge II. Die Gesteinsas-soziationen im sächsischen Zwischengebirge. Nachrichtenblatt Geol Paläontol Miner 9(10): 13 ppGoogle Scholar
  79. Scheumann KH (1932) Über die petrogenetische Ableitung des roten Erzgebirgsgneises. Miner Petrogr Mitt 42: 413–454Google Scholar
  80. Scheumann KH (1935) Die Rotgneise der Glimmerschieferdecke des sächsischen Granulitgebirges. Ber Math-Phys Kl Sächs Akad Wiss 87: 251–286Google Scholar
  81. Scheumann KH (1938) Über die petrographische und chemische Substanzbestimmung der Gesteinsgruppe der Roten Gneise des sächsischen Erzgebirges und der angrenzenden Räume. Miner Petrogr Mitt 59: 391–440Google Scholar
  82. Scheumann KH (1957) Über Gneise des Erzgebirges. Z Geol 6: 3–39Google Scholar
  83. Schmädicke E (1991) Quartz pseudomorphs after coesite in eclogites from the Saxonian Erzgebirge. Eur J Mineral 3: 231–238Google Scholar
  84. Schmädicke E, Okrusch M, Schmidt W (1992) Eclogitefacies rocks in the Saxonian Erzgebirge, Germany: high pressure metamorphism under contrasting P-T conditions. Contrib Mineral Petrol 110: 226–241CrossRefGoogle Scholar
  85. Schmidt W, Schmädicke E, Werner CD (1990) Eklogite des Erzgebirges. Ber DMG, Eur J Mineral 2(Beih 1): 224Google Scholar
  86. Schüller A (1954) Die kristalline Scholle von Wildenfels, ihr Stoffbestand und ihr tektonischer Bau im Rahmen des varistischen Gebirges. Z Geol 3: 707–749Google Scholar
  87. Schüssler U (1990) Petrographie, Geochemie und Metamorphosealter von Metabasiten im KTB-Zielgebiet Oberpfalz. Geol Bavarica 95: 5–99Google Scholar
  88. Schüssler U, Oppermann U, Kreuzer H, Seidel E, Okrusch M, Lenz K-L Raschka H (1986) Zur Altersstellung des ostbayerischen Kristallins. Ergebnisse neuer K-Ar-Datierungen. Geol Bavarica, 89: 21–47Google Scholar
  89. Schüssler U, Richter P, Okrusch M (1989) Metabasites from the KTB Oberpfalz target area, Bavaria — geochemical characteristics and examples of mobile behaviour of “immobile” elements. Tectonophysics 157: 135–148CrossRefGoogle Scholar
  90. Schüssler U, Okrusch M, Patzak M, Müller P, Kreuzer H (1990) The polyphase thermal history of the Erbendorf-Vohenstrauß (ZEV) and Erbendorf Greenschist (EGZ) zones of NE Bavaria in the light of Ar-Ar spectra. Ber DMG, Eur J Mineral 2(Beih 1): 231Google Scholar
  91. Schüssler U, Vejnar Z, Okrusch M, Rose D, Seidel E (1992) Geochemistry of metabasites and gabbroic rocks from the Teplä-Domazlice Zone. In: Kukal Z (ed) Proc 1st Int Conf on the Bohemian Massif, Prague 1988, Czech Geol Survey Prague: 247-256Google Scholar
  92. Schwan W (1974) Die Sächsischen Zwischengebirge und Vergleiche mit der Münchberger Gneismasse und anderen analogen Kristallinvorkommen im Saxothuringikum. Erlanger Geol Abh 99: 189 ppGoogle Scholar
  93. Seibert J, Pauli Ch, Franke W, Behrmann J (1990) Zur Strukturentwicklung und Kinematik der Grenzzone Moldanubikum-Tepla/Barrandium im Bayerischen Wald. Kurzfassungen u. Poster, 3. Symp für Tektonik, Strukturgeologie, Kristallingeologie, Graz 1990, pp 208-210Google Scholar
  94. Söllner F, Köhler H, Müller-Sohnius D (1981a) Rb/Sr-Altersbestimmungen an Gesteinen der Münchberger Gneismasse (MM), NE-Bayern. Teil 1. Gesamtgesteinsdatierungen. Neues Jahrb Miner Abh 141: 90–112Google Scholar
  95. Söllner F, Köhler H, Müller-Sohnius D (1981b) Rb/ Sr-Altersbestimmungen an der Münchberger Gneismasse (MM), NE-Bayern. Teil 2. Mineraldatierungen. Neues Jahrb Miner Abh 142: 178–198Google Scholar
  96. Steiger RH, Jäger E (1977) Subcommission on geochronology: convention on the use of decay constant in geo-and cosmochronology. Earth Planet Sci Lett 36: 359–362CrossRefGoogle Scholar
  97. Stein E (1988) Die strukturgeologische Entwicklung im Übergangsbereich Saxothuringikum/Moldanubikum in NE-Bayern. Geol Bavarica 92: 5–131Google Scholar
  98. Stein E, Kleemann U (1992) Evidence for late Variscan emplacement of the ZEV. KTB-Report 92-4: 133–146Google Scholar
  99. Stosch HG Lugmair GW (1987) Geochronology and geochemistry of eclogites from the Münchberg Massif, FRG. Terra Cognita 7: 163Google Scholar
  100. Stosch HG, Lugmair GW (1990) Geochemistry and evolution of MORB-type eclogites from the Münchberg Massif, southern Germany. Earth Planet Sci Lett 99: 230–249CrossRefGoogle Scholar
  101. Teufel S (1988) Vergleichende U-Pb-und Rb-Sr-Altersbestimmungen an Gesteinen des Übergangsbereichs Saxothuringikum/Moldanubikum, NE-Bayern. Göttinger Arb Geol Paläontol 35: 1–87Google Scholar
  102. Vejnar Z (1972) Regionally metamorphosed volcanic rocks from the West-Bohemian metabasite belt. Krystalinikum 9: 131–156Google Scholar
  103. Vejnar Z (1977) The relationship between the metamorphic grade and composition of silicates in the West-Bohemian greenschists and amphibolites. Krystalinikum 13: 129–158Google Scholar
  104. Vejnar Z (1986) The Kdyne Masif, South-West Bohemia — a technically modified basic layered intrusion. Sbor Geol Ved Geol 41: 9–67Google Scholar
  105. Voll G (1960) Stoff, Bau und Alter der Grenzzone Moldanubikum/Saxothuringikum in Bayern unter besonderer Berücksichtigung gabbroider, amphibolitischer und kalksilikatführender Gesteine. Geol Jahrb Beih 42: 1–382Google Scholar
  106. Vollbrecht A (1981) Tektogenetische Entwicklung der Münchberger Gneismasse. Göttinger Arb Geol Paläontol 24: 122 ppGoogle Scholar
  107. Vollbrecht A, Weber K, Schmoll J (1989) Structural model for the Saxothuringian-Moldanubian suture in the Variscan basement of the Oberpfalz (northeastern Bavaria, F.R.G.) interpreted from geophysical data. Tectonophysics 157: 123–133CrossRefGoogle Scholar
  108. von Gehlen K, Schmitt GE (1989) Serpentinites from Winklarn (northeastern Bavaria, F.R.G.) and from Brezovica and Radusa (Yugoslavia): Relics of sub-oceanic mantle. Tectonophysics 157: 213–219CrossRefGoogle Scholar
  109. von Gehlen K, Matthes S, Okrusch M, Richter P, Röhr C, Schüssler U (1991) Ultramafische Einschaltungen in Metabasiten der KTB-Vorbohrung. KTB-Rep 91-1: 83–95Google Scholar
  110. von Quadt A (1990) U-Pb-zircon and Sm-Nd analysis on metabasites from the KTB pilot bore hole. KTB-Report 90-4: 545Google Scholar
  111. von Quadt, Gebauer D (1988) Sm/Nd, U-Pb-and Rb-Sr dating of high-pressure ultramafic to felsic rocks from the Moldanubian area of NE Bavaria (FRG) and the Saxonian Granulite Massif (GDR). Chem Geol 70: 15CrossRefGoogle Scholar
  112. von Quadt A, Gebauer D (1993) Sm-Nd and U-Pb dating of eclogites and granulites from the Oberpfalz, NE-Bavaria, Germany. Chem Geol 109: 217–339Google Scholar
  113. Weber K (1984) Variscan events; Early Palaeozoic continental rift metamorphism and late Palaeozoic crustal shortening. In Hutton DHW, Sanderson DJ (eds) Variscan tectonics of the North Atlantic region. Geol Soc Spec Paper 14: 3-22Google Scholar
  114. Weber K, Vollbrecht A (1989) The crustal structure at the KTB drill site, Oberpfalz. In: Emmermann R, Wohlenberg J (eds) The German Continental Deep drilling Program (KTB) Springer, Berlin Heidelberg New York, pp 5–36CrossRefGoogle Scholar
  115. Werner C-D (1989) Metamorphic mafic rocks of the Central Saxon Lineament zone. In: Variscan mafic rocks in the Saxothuringian zone. Guidebook of excursions in the German Democratic Republic May/June 1989. Academy of Sciences of the GDR, Central Institute for Physics of the Earth, Potsdam, pp 49–54Google Scholar
  116. Schmädicke E, Mezger K, Cosca MA, Okrusch M (in press) Variscan Sm-Nd and Ar-Ar ages of eclogite facies rocks from the Erzgebirge, Bohemian Massif. J metamorphic Geol 1995/13Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • W. Franke
  • H. Kreuzer
  • M. Okrusch
  • U. Schüssler
  • E. Seidel

There are no affiliations available

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