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Age constraints on the evolution of the Austroalpine basement to the south of the Tauern Window

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Abstract

The Austroalpine basement to the south of the Tauern Window once was part of the northern margin of Gondwana. It includes the “Altkristallin” and the phyllitic Thurntaler Complex. In the Altkristallin (AMU, MPU), suites of arc-related metamafic sequences occur together with calc-alkaline metagranite. SHRIMP U–Pb dating of zircon from calc-alkaline metagranite associated with an eclogitic amphibolite give an age of 470 ± 3 Ma interpreted as the age of protolith emplacement. In the Thurntaler Complex, metaporphyroids occur together with tholeiitic as well as alkaline within-plate basalt-type metabasite. The metaryholites of this association give a crystallization SHRIMP age of 477 ± 4 Ma, which suggests contemporaneity of arc-related and extensional settings in the Austroalpine basement units. The age data demonstrate widespread magmatic activity associated with the Early-Ordovician amalgamation at the end of the 550–470 Ma subduction–accretion–collision cycle. The Pb–Pb and U–Pb systematics of step-wise leached staurolite and kyanite from the peak-metamorphic assemblage of the Altkristallin indicate that (1) step-wise leaching of staurolite and kyanite yields the age of inclusions rather than the host; (2) zircon inclusions in staurolite suggest an Ordovician or older age for the precursor of the staurolite-schists; (3) the weighted average of the 206Pb/238U data of the various leaching steps yields a Variscan age for the inclusions (ilmenite, biotite, and andesine). Since these inclusions are part of the metamorphic mineral assemblage, this age provides a minimum estimate for staurolite growth, i.e., metamorphism. Thus, the Pb–Pb and U–Pb systematics of staurolite provide evidence for a Variscan metamorphism of the Austroalpine basement, e.g., MPU, AMU and Thurntaler Complex, to the south of the Tauern Window.

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References

  • Bellieni G, Visona D (1981) Metamorphic evolution of the Austroalpine schists outcropping between the intrusive masses of Vedretti di Ries (Rieserferner) and Cima di Vila (Zinsnock) (Eastern Alps, Italy). N Jb Geol Paläont Mh 76:586–602

    Google Scholar 

  • Bernhard F, Klötzli US, Thöni M, Hoinkes G (1996) Age, origin and geodynamic significance of a polymetamorphic felsic intrusion in the Ötztal Crystalline Basement, Tirol, Austria. Mineral Petrol 58:171–196

    Article  Google Scholar 

  • Borsi S, Del Moro A, Sassi FP, Zirpoli G (1973) Metamorphic evolution of the Austridic rocks to the South of the Tauern Window (Eastern Alps). Radiometric and geopetrologic data. Mem Soc Ital 12:549–571

    Google Scholar 

  • Borsi S, Del Moro A, Sassi FP, Zanfrerrari A, Zirpoli G (1978) New geopetrologic and radiometric data on the Alpine history of the Austridic continental margin south of the Tauern Window. Mem Inst Geol Mineral Univ Padova 32:1–17

    Google Scholar 

  • Bücksteeg A (1999) Zur Geologie des Kristallins der Schobergruppe (Osttirol/Österreich). Aachener Geowiss Beitr 33:1–206

    Google Scholar 

  • Clar E (1972) Ein Beitrag zur Geologie der Sachobergruppe bei Lienz in Tirol. Mitt Natw Ver Steiermark 63:345–440

    Google Scholar 

  • Cliff RA (1980) U–Pb isotopic evidence from zircons for lower Paleozoic tectonic activity in the Austroalpine nappe, the eastern Alps. Contrib Mineral Petrol 71:238–288

    Article  Google Scholar 

  • Compston W, Williams IS, Kirschvink JL, Zhang Z, Ma G (1992) Zircon U–Pb ages for the early Cambrian time scale. J Geol Soc Lond 149:171–184

    Google Scholar 

  • Corfu F (2000) Extraction of Pb with artificially too-old ages during stepwise dissolution experiments on Archean zircon. Lithos 53:279–291

    Article  Google Scholar 

  • Cumming GL, Richards JR (1975) Ore lead isotope ratios in a continuously changing Earth. Earth Planet Sci Lett 28:155–175

    Article  Google Scholar 

  • Dal Piaz G (1934) Studi geologica sull’Alto Adige e regione limitrofe. Mem Ist Geol Univ Padova 10:1–238

    Google Scholar 

  • Davis DW, Krogh TE (2000) Preferential dissolution of 234U and radiogenic Pb from alpha-recoil-damaged lattice sites in zircon; implications for thermal histories and Pb isotopic fractionation in the near surface environment. Chem Geol 172:41–58

    Article  Google Scholar 

  • Doman D (2002) U/Pb Datierungen an Orthogneisen im ostalpinen Altkristallin südlich des Tauernfensters. Unpublished Diploma Thesis, Univ Göttingen, 87 pp

  • Frei R, Biino GG, Prospert C (1995) Dating a Variscan pressure–temperature loop with staurolite. Geology 23:1095–1098

    Article  Google Scholar 

  • Frei R, Villa IM, Nägler ThF, Kramers JD, Przybylowicz WJ, Prozesky VM, Hofmann BA, Kamber BS (1997) Single mineral dating by the Pb–Pb step-leaching method: assessing the mechanisms. Geochim Cosmochim Acta 61:393–414

    Article  Google Scholar 

  • Gebauer D, Grünfelder M (1978) U–Pb systematics of detrital zircons from some unmetamorphosed to slightly metamorphosed sediments of Central Europe. Contrib Mineral Petrol 65:29–37

    Article  Google Scholar 

  • Gerstenberger H, Haase G (1997) A highly effective emitter substance for mass spectrometric Pb isotope ratio determinations. Chem Geol 136:309–312

    Article  Google Scholar 

  • Hammerschmidt K (1981) Isotopengeologische Untersuchungen am Augengneis vom Typ Campo Tures bei Rain in Taufers, Südtirol. Mem Ist Geol Min Univ Padova 34:273–300

    Google Scholar 

  • Hauzenberger Ch, Höller W, Hoinkes G (1996) Transition from eclogite to amphibolite-facies metamorphism in the Austroalpine Ulten Zone. Mineral Petrol 58:111–130

    Article  Google Scholar 

  • Heaman LM, Bowins R, Crocked J (1990) The chemical composition of igneous zircon suites: implications for geochemical tracer studies. Geochim Cosmochim Acta 54:1597–1607

    Article  Google Scholar 

  • Heinisch H (1981) Zum ordovitischen Porphyroid-Vilkanismus der Ost- und Südalpen. Jb Geol B-A 124:1–109

    Google Scholar 

  • Heinisch H, Schmidt K (1976) Zur kaledonischen Orogenese in den Ostalpen. Geol Rundsch 65:459–482

    Article  Google Scholar 

  • Heinisch H, Schmidt K (1982) Zur Genese der Augengneise im Altkristallin der Ostalpen. N Jb Geol Paläont Mh 4:211–239

    Google Scholar 

  • Heinisch H, Schmidt K (1984) Zur Geologie des Thurntaler Quarzphyllits und des Altkristallin südlich des Tauernfensters (Ostalpen, Südtirol). Geol Rundsch 73:113–129

    Article  Google Scholar 

  • Hoinkes G, Thöni M, Lichem F, Bernhard F, Kaindl R, Schweigl J, Tropper M, Cosca M (1997) Metagranitoids and associated metasediments as indicators for the pre-Alpine magmatic and metamorphic evolution of the western Austroalpine Ötztal Basement (Kaunertal, Tirol). Schweiz Mineral Petrogr Mitt 77:299–314

    Google Scholar 

  • Hoke L (1990) The Altkristallin of the Kreuzeck Mountains, SE Tauern Window, Eastern Alps; basement crust in a convergent plate boundary zone. Jb Geol B-A 133:5–87

    Google Scholar 

  • Jaffey AH, Flynn KF, Glendenin LE, Bentley WC, Essling AM (1971) Precision measurement of half-lives and specific activities of 235U and 238U. Phys Rev C4:1889–1906

    Article  Google Scholar 

  • Kalt A, Kober B, Pidgeon RT (2000) Further time constraints on Variscan high-pressure metamorphism in the Schwarzwald (Germany). Eur J Mineral 12(Suppl 1):91

    Google Scholar 

  • Klötzli U (1995) Geochronologische Untersuchungen an Metagranitoiden im ostalpinen Altkristallin W und S des Tauernfensters. In: Geologische B, Wien A (eds) Arbeitstagung Lienz 1995:95–107

  • Klötzli-Chowanetz E, Klötzli US, Koller F (1997) Lower Ordovician migmatisation in the Ötztal crystalline basement (EasternAlps, Austria): linkage U–Pb and Pb–Pb dating with zircons morphology. Schweiz Mineral Petrogr Mitt 77:315–324

    Google Scholar 

  • Kreutzer S (1992) Zur Geologie des östlichen Thurtaler Quarzphyllitkomplexes und seiner tektonischen Einbindung in das Ostalpin der südöstlichen Defregegr Alpen. Osttitol. Unpublished PhD thesis, RWTH Aachen

  • Krol W (1974) Geologisch-lagerstättenkundliche Untersuchungen im Gebiet nördlich von Sillian (Osttirol/Österreich. Unpublished PhD thesis, University München

  • Layer PW, Hall CM, York D (1987) The derivation of 40Ar/39Ar age spectra of single grains of hornblende and biotite by laser step heating. Geophys Res Lett 14:757–760

    Google Scholar 

  • Lemarchand F, Villemant B, Calas G (1987) Trace element distribution coefficients in alkaline series. Geochim Cosmochim Acta 51:1071–1081

    Article  Google Scholar 

  • Liebetrau V (1996) Petrographie, Geochemie und Datierung der “Flüelagranitischen Assoziation” (sog. Jüngere Orthogneise) der Silvrettakristallins Graubünden–Schweiz. Thesis Universität Freiburg/Brsg

  • Loeschke J (1989) Lower Palaeozoic volcanism of the Eastern Alps and its geodynamic implication. Geol Rundsch 78:566–616

    Article  Google Scholar 

  • Loeschke J, Heinisch H (1993) Palaeozoic volcanismof the Eastern Alps and its palaeotectonic significance. In: von Raumer J, Neubauer F (eds) The pre-Mesozoic geology in the Alps. Springer, Berlin Heidelberg New York, pp 441– 455

    Google Scholar 

  • Mahood GA, Hildreth W (1983) Large partition coefficients for trace elements in high silica rhyolites. Geochim Cosmochim Acta 47:11–30

    Article  Google Scholar 

  • Manhès G, Minster JF, Allègre CJ (1978) Comparative uranium–thorium–lead and rubidium–strontium study of the Saint Séverin amphoterite: consequences for early solar system chronology. Earth Planet Sci Lett 39:14–24

    Article  Google Scholar 

  • Maniar PD, Piccoli PM (1989) Tectonic discrimination of granitoids. Geol Soc Am Bull 101:635–643

    Article  Google Scholar 

  • Mattinson JM (1994) A study of complex discordance in zircons using step-wise dissolution techniques. Contrib Mineral Petrol 116:117–129

    Article  Google Scholar 

  • Mattinson JM, Gaubard CM, Parkinson DL, McLelland WC (1996) U–Pb reverse discordance in zircons: the role of fine-scale oscillatory zoning and sub-microscopic transport of Pb. Am Geophys Union Geophys Monogr 95:355–370

    Google Scholar 

  • Matzke H (1982) Radiation damage in crystalline insulators, oxides and ceramic nuclear fuels. Rad Effects 64:3–33

    Google Scholar 

  • Meli S, Klötzli US (2001) Evidence for Lower Palaeozoic magmatism in the Eastern Southalpine basement: zircon geochronology from Comelico porphyroids. Schweiz Mineral Petrogr Mitt 81:147–157

    Google Scholar 

  • Miller C, Thöni M (1995) Origin of eclogites from the Austroalpines Ötztal basement (Tirol, Austria): geochemistry and Sm–Nd vs. Rb–Sr isotope systematics. Chem Geol 122:199–225

    Article  Google Scholar 

  • Müller B, Klötzli U, Flisch M (1995) U–Pb and Pb–Pb dating of the older orthogneiss suite in the Silvretta nappe. eastern Alps: cadomian magmatism in the upper Austro-Alpine realm. Geol Rundsch 84:457-469

    Article  Google Scholar 

  • Neubauer F (2002) Evolution of late Neoproterozoic to early Paleozoic tectonic elements in Central and Southeast European Alpine mountain belts:review and synthesis. Tectonophysics 352:87–103

    Article  Google Scholar 

  • Neubauer F, Frisch W (1993) The Austro-Alpine metamorphic basement east of the Tauern window. In: von Raumer J, Neubauer F (eds) The pre-Mesozoic geology in the Alps. Springer, Berlin Heidelberg New York, pp 515–536

    Google Scholar 

  • Neubauer F, Sassi FP (1993) The Austroalpine quartzphyllites and related Palaeozoic Formations. In: von Raumer J, Neubauer F (eds) The pre-Mesozoic geology in the Alps. Springer, Berlin Heidelberg New York, pp 423–439

    Google Scholar 

  • Neubauer F, Frisch W, Hansen B (2002) Early Palaeozoic tectonothermal events in basement complexes of the eastern Greywacke Zone (Eastern Alps): evidence from U–Pb zircon data. Int J Earth Sci 91:775–786

    Article  Google Scholar 

  • Paces JB Miller JD (1989) Precise U–Pb ages of Duluth Complex and related mafic intrusions, Northeast Minnesota: geochronological insights to physical, petrogenic, paleomagnetic and tectonomagmatic processes associated with 1.1 Ga midcontinent rift system. J Geophys Res 98B:13997–14013

    Google Scholar 

  • Peccerillo A, Poli G, Sassi FP, Zipoli G, Mezzacasa G (1979) New data on the Upper Ordovician acid plutonism in the Eastern Alps. N Jb Mineral Abh 137:162–183

    Google Scholar 

  • von Raumer JF (1998) The Paleozoic evolution in the Alps: from Gondwana to Pangea. Int J Earth Sci 87:407–435

    Google Scholar 

  • von Raumer JF, Neubauer F (1993) Late Precambrian and Palaeozoic evolution of the Alpine basement—an overview. In: von Raumer JF, Neubauer F (eds) Pre-Mesozoic geology of the Alps. Springer, Berlin Heidelberg New York, pp 625–639

  • von Raumer JF, Stampfli GM, Borel G, Bussy F (2002) Organization of pre-Variscan basement areas at the north-Gondwanan margin. Int J Earth Sci 91:35–52

    Article  Google Scholar 

  • von Raumer JF, Stampfli GM, Bussy F (2003) Gondwana-derived microcontinents: the constituents of the Variscan and Alpine collision orogens. Tectonophysics 365:7–22

    Article  Google Scholar 

  • Romer RL (2001) Lead incorporation during crystal growth and the minterpretation of geochronological data from low-238U/204Pb metamorphic minerals. Terra Nova 13:258–263

    Article  Google Scholar 

  • Romer RL (2003) Alphã-recoil in U–Pb geochronology: effective sample size matters. Contrib Mineral Petrol 145:481–491

    Article  Google Scholar 

  • Romer RL, Franz L (1998) Ordovivian Barrow-type metamorphism in the Strona-Ceneri Zone (Northern Italy) dated by U–Pb on staurolite. Schweiz Mineral Petrol Mitt 87:383–395

    Google Scholar 

  • Romer RL, Siegesmund S (2003) Why allanite may swindle about its true age? Contrib Mineral Petrol 146:297–307

    Article  Google Scholar 

  • Romer RL and Thomas R (2005) U–Pb dating of micro-inclusions: the age of the Ehrenfriedersdorf tin deposit (Erzgebirge, Germany). In: Mao Jingwen, Bierlein FP (eds) Mineral deposits research: meeting the global challenge. Proceedings of the 8th biennial SGA meeting, Beijing, China, pp 817–820

  • Sander B (1929) Note illustrative della carta geologica delle Tre Venezie, foglio Bressanone 1:100,000. Ufficio Idrografico Mag Sez. Geology 56:1–60

    Google Scholar 

  • Sassi FP, Zanfrerari A (1972) Il significato geologico del Complesso de Thurtaler (Pustertal) con particolare riguardo alla succesione di eventi metamorphici prealpini nel basamento austridico delle Alpe Orientali. Boll Soc Geol Ital 91:533–557

    Google Scholar 

  • Sassi FP, Cavazzini G, Visona D, Del Moro A (1985) Radiometric geochronology in the Eastern Alps: results and problems. Rend Soc Ital Min Petr 40:187–224

    Google Scholar 

  • Satir M (1975) Die Entwicklungsgeschichte der westlichen Hohen Tauern und der südlichen Oetztalmasse auf Grund radiometrischer Altersbestimmungen. Mem Ist Geol Min Univ Padova 30:82 pp

    Google Scholar 

  • Schönhofer R (1999) Das ostalpine Altkristallin der westlichen Lasörlinggruppe (Osttirol, Österreich): Kartierung, Stoffbestand und tektonometamorphe Entwicklung. Erlanger Geol Abh 130:1–128

    Google Scholar 

  • Schönlaub HP (1979) Das Paläozoikum in Österreich. Abh Geol Bundesanstalt 33:1–124

    Google Scholar 

  • Schönlaub HP (1993) Stratigraphy, biogeography and climate relationships of the Alpine Palaeozoic. In: von Raumer J, Neubauer F (eds) The pre-Mesozoic geology in the Alps. Springer, Berlin Heidelberg New York, pp 65–92

    Google Scholar 

  • Schulz B (1991) Deformation und Metamorphose im Thurntaler Komplex (Ostalpen). Jb Geol B-A 134:369–391

    Google Scholar 

  • Schulz B (1995) Geochemistry and REE magmatic fractionation patterns in the Prijakt amphibolitized eclogites of the Schobergruppe. Austroalpine basement (Eastern Alps). Schweiz Mineral Petrogr Mitt 77:281–297

    Google Scholar 

  • Schulz B (1997) Pre-Alpine tectonometamorphic evolutionin the Austroalpine basement to the south of the Tauern Window. Jb Geol B-A 143:303–321

    Google Scholar 

  • Schulz B, Bombach K (2003) Single zircon Pb–Pb geochronology of the Early-Paleozoic magmatic evolution in the Austroalpine basement to the south of the Tauern Window. Jb Geol B-A 143:303–321

    Google Scholar 

  • Schulz B, Nollau G, Heinisch H, Godizart G (1993) Austro-Alpine basement complex to the south of the Tauern Window. In: von Raumer J, Neubauer F (eds) The pre-Mesozoic geology in the Alps. Springer, Berlin Heidelberg New York, pp 493–512

    Google Scholar 

  • Schulz B, Siegesmund S, Steenken A, Schönhofer R, Heinrichs T (2001) Geologie des ostalpinen Kristallins südlich des Tauernfensters zwischen Virgental und Pustertal. Z Dtsch Geol Ges 152:261–307

    Google Scholar 

  • Schulz B, Bombach K, Pawlig S, Brätz H (2004) Neoproterozoic to Early-Paläozoic magmatic evolution in the Gondwana-derived Austroalpine basement to the south of the Tauern Window (Eastern Alps) Int J Earth Sci 93:824–843

    Article  Google Scholar 

  • Schuster R, Scharbert S, Abart R, Frank W (2001) Permo-Triassic extension and related HAT/LP metamorphism in the Austroalpine–Southalpine realm. Mitt Ges Geol Bergbaustud Österr 45:111–141

    Google Scholar 

  • Sisson VB, Onstott TC (1986) Dating blueschist metamorphism; a combined 40Ar/39Ar and electron microprobe approach. Geochim Cosmochim Acta 50:2111–2117

    Article  Google Scholar 

  • Sprenger W (1996) Das periadriatische Lineament suedlich der Lienzer Dolomiten; Strukturgeologie, Fernerkundung, Geochemie. Abh Geol B-A 52:220 pp

  • Steenken A, Siegesmund S (2000) Evidence for an alkaline basaltic volcanism at the northern margin of Gondwana within the Austroalpjne Basement Complex of the Eastern Alps (Austrian/Italian border). Jb Geol B-A 142:235–247

    Google Scholar 

  • Steenken A, Siegesmund S, Heinrichs T (2000) The emplacement of the Rieserferner-Pluton (Eastern Alps, Tyrol): constraints from field observations, magnetic fabrics and microstructures. J Struct Geol 22:1855–1873

    Article  Google Scholar 

  • Steenken A, Siegesmund S, Heinrichs T, Fügenschuh B (2002) Cooling and exhumation of the Rieserferner Pluton (Eastern Alps, Italy/Austria). Int J Earth Sci 91:799–817

    Article  Google Scholar 

  • Steiger RH, Jäger E (1977) Convention on the use of decay constants in geo- and cosmochronology. Earth Planet Sci Lett 36:359–362

    Article  Google Scholar 

  • Stöckhert B (1982) Deformation und retrograde Metamorphose im Altkristallin S’ des westlichen Tauernfensters (Südtirol). Diss Univ Elangen-Nürnberg, 214 pp

  • Stöckhert B (1984) K-Ar determinations on muscovites and phengites and the minimum age of the Old Alpine deformation in the Austridic basement south of the Tauern Window (Ahrn valley, Southern Tyrol, Eastern Alps). N Jb Min Abh 150:103–120

    Google Scholar 

  • Tera F, Wasserburg GJ (1972) Th–Pb Systematics in three APOLLO 14 basalts and the problem of initial Pb in Lunar rocks. Earth Planet Sci Lett 14:281–304

    Article  Google Scholar 

  • Thöni M (1999) A review of geochronological data from the Eastern Alps. Schweiz Mineral Petrogr Mitt 79:209–230

    Google Scholar 

  • Tilton GR (1973) Isotopic lead ages of chondritic meteorites. Earth Planet Sci Lett 19:321–329

    Article  Google Scholar 

  • Troll G, Forst R, Söllner F, Brack W, Köhler H, Müller-Sohnius D (1976) Über Bau, Alter und Metamorphose des Altkristallins der Schobergruppe, Osttirol. Geol Rundsch 65:483–511

    Article  Google Scholar 

  • Troll G, Baumgartner S, Daiminger W (1980) Zur Geologie der südwestlichen Schobergruppe, Osttirol. Geol Rdsch 65:483–511

    Article  Google Scholar 

  • Williams IS, Claesson S (1987) Isotopic evidence for the Precambrian provenance and Caledonian metamorphism of high grade paragneisses from the Seve Nappes, Scandinavian Caledonides. II. Ion microprobe zircon U–Th–Pb. Contrib Mineral Petrol 97:205–217

    Article  Google Scholar 

  • Ziegler JF, Biersack JP, Littmark U (1985) The stopping and range of ions in solids. In: Ziegler JF (ed) The stopping and range of ions in matter, vol 1. Pergamon, New York

Download references

Acknowledgments

We thank C. Schulz (GFZ Potsdam) for support in the laboratory. S.S. thanks Rich Armstrong and Paul Layer for help with the U–Pb SHRIMP and the Ar–Ar age determination, respectively. B. Schulz (Freiberg) is thanked for the open and unreserved discussions during long-term joint field work. We greatly appreciated constructive reviews by B. Schulz (Freiberg) and H. Heinisch (Halle)

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  1. Göttinger Zentrum Geowissenschaften, Goldschmidtstr. 3, 37077, Göttingen, Germany

    Siegfried Siegesmund, Till Heinrichs & Daniel Doman

  2. GeoForschungsZentrum Potsdam, Telegrafenberg, 14473, Potsdam, Germany

    Rolf L. Romer

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  1. Siegfried Siegesmund
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Siegesmund, S., Heinrichs, T., Romer, R.L. et al. Age constraints on the evolution of the Austroalpine basement to the south of the Tauern Window. Int J Earth Sci (Geol Rundsch) 96, 415–432 (2007). https://doi.org/10.1007/s00531-006-0115-5

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