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Urs KLÖTZLI, Ao. Univ. Prof. Mag. Dr.

urs.kloetzli@univie.ac.at
Room Number: 2A474
Tel.: +43-1-4277-53460
Mobile: +43-680-5533-860

Research Interests:

  • Development and improvement of micro-analytical techniques for isotope analysis in geological materials with a special emphasis on high-precision Laser-Ablation MC-ICP-MS and SIMS U-Th-Pb dating techniques.
  • Radiometric dating and the derivation of the duration of geological events and processes with a main focus on the orogenic and anorogenic formation and evolution of continental crust.
  • Petrochronology: Linking radiometric age information with metamorphic processes; analytical issues, theory and applications.

Current Projects:

  • Development of U-Th-Pb in-situ dating techniques (LA-MC-ICP-MS, SIMS, LASS) for xenotime.
  • Advancing the petrochronology of temperature-dominated metamorphic processes by testing and enhancing the consistency and reproducibility of accessory mineral in-situ U-Th-Pb dating and petrology. -> references
  • Development of a tool-box to understand the petrochronological evolution of metabasic rocks by combining petrology with in-situ U-Th-Pb geochronology. -> references
  • Petrochronology of hight temperature metamorphism; the age, duration and rates of metamorphic processes in the lower continental crust.
  • Geochronological and isotope geochemical aspects of the interaction of mantle and lower crustal processes in the Ivrea-Verbano Zone, Southern Alps, Italy. -> references
  • Geochronology and isotope geochemistry of pre-Variscan plutonism in the Austroalpine Ötztal-Stubai complex, Eastern Alps, Austria.
  • Modelling of isotope fractionation effects in geomaterials.
  • Other running projects (mainly geochronologically oriented) are located in Thailand, Carpathians, Cameroon, Turkey, ...


Professional affiliations:

  • Member of the Swiss Society of Mineralogy and Petrology
  • Member of the Geological Society of America
  • Member of the American Geophysical Union
  • Member of the European Asscociation for Geochemistry


Professional activities:

  • Reviewer for Chemical Geology
  • Reviewer for Journal of Petrology
  • Reviewer for International Journal of Earth Sciences
  • Reviewer for Lithos
  • Reviewer for Mineralogy and Petrology
  • Reviewer for the Swiss Journal of Geosciences
  • Reviewer for the Austrian Journal of Earth Sciences
  • Reviewer for the Bulletin of the Swiss Society of Mineralogy and Petrology
  • Reviewer for Geologica Carpathica
  • Rewiever for the Journal of Analytical Atomic Spectrometry
  • Member of the editorial board of the Central European Journal of Geosciences

Publications:

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Kloetzli, U., Buda, G., & Koller, F. (1999). Geochronological evidence for the derivation of the Mecsek Mountains, South Hungary, from Variscan Central Europe. European Journal of Mineralogy: an international journal of mineralogy, geochemistry and related sciences, Beihefte(11/1).
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Kloetzli, U. (1999). Resolving complex geological histories by zircon dating: A discussion of case studies from the Bohemian Massif and the Eastern Alps. Austrian Journal of Earth Sciences, (90), 31-41.
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Kloetzli, U. (1999). Th/U zonation in zircon derived from evaporation analysis: A model and implications. Chemical Geology, (158), 325-333.
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Miller, C., Schuster, R., Kloetzli, U., Frank, W., & Purtscheller, F. (1999). Post-collisional potassic and ultrapotassic magmatism in SW Tibet: Geochemical and Sr-Nd-Pb-O isotopic constraints for mantle source characteristics and petrogenesis. Journal of Petrology, (40/9), 1399-1424.
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Rizzo, G., Kloetzli, U., & Spiess, R. (1998). Single zircon Pb/Pb age constraints on maximum sedimentation ages for quartzphyllite complexes from the Eastern and Southern Alps. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (143), 372-373.
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Kloetzli, U., & Koller, F. (1998). Geochronology of pre-Variscan crustal remnants and their granitoid host rocks, South Bohemian Pluton, Austria. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (143), 314-315.
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Koller, F., & Kloetzli, U. (1998). The evolution of the South Bohemian Pluton. In: Breiter K. (Ed.): Genetic significance of phosphorous in fractionated granites. Journal of the Czech Geological Society, IGCP373, 11-14.
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Kloetzli, U., Frank, W., Scharbert, S., & Thöni, M. (1998). Evolution of the SE Bohemian Massif Based on Geochronological Data: A Review. Jahrbuch der Geologischen Bundesanstalt, 141(4), 377-394.
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Kloetzli, U., & Koller, F. (1998). Sarleinsbach type of Weinsberg granite. In: Breiter K. (Ed.): Genetic significance of phosphorous in fractionated granites. Journal of the Czech Geological Society, IGCP373, 137-140.
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Kloetzli, U. (1997). Zircon evaporation TIMS. Unknown Journal.
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Kloetzli, U. (1997). Zircon evaporation TIMS: Method and procedures. The Analyst, 122, 1239-1248.
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Kloetzli-Chowanetz, E., Kloetzli, U., & Koller, F. (1997). Lower Ordovician migmatisation in the Ötztal crystalline basement (Austria): linking U/Pb and Pb-Pb dating with zircon morphology. Schweizerische Mineralogische und Petrographische Mitteilungen: eine europäische Zeitschrift für Mineralogie, Geochemie und Petrographie, 77, 315-324.
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Meli, S., & Kloetzli, U. (1997). Preliminary geochronological results on the pre-Variscan metavolcanics of the eastern southalpine basement. Plinius, (18), 144-155.
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Kloetzli, U. (1996). Magmatic versus metamorphic U/Th/Pb-zircon ages: Implications from U/Th-ratios and zircon evaporation. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (141), 123-124.
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Kloetzli, U. (1996). Boron isotope geochemistry of the Larderello geothermal field, Italy: Boron isotopes as geothermal tracers. Proceedings of the International Symposium on Geothermal Energy, 29-30.
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Kloetzli-Chowanetz, E., Kloetzli, U., & Koller, F. (1996). Dating anatectic events using zircon U-Pb and Pb-Pb evaporation analyses: The Winnebach migmatite / Ötztal crystalline basement (Austria). Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 141, 125-126.
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Bernhard, F., Kloetzli, U., Hoinkes, G., & Thöni, M. (1996). Constraints on the age and origin of a polymetamorphic felsic intrusion in the Ötztal Crystalline Basement, Austria. Mineralogy and Petrology, (58), 171-196.
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Frimmel, H., Kloetzli, U., & Siegfried, P. R. (1996). New Pb-Pb single zircon age constraints on the timing of Neoproterozoic glaciation and continental break-up in Namibia. Geological Magazine, (104), 459-469.
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Miller, C., Schuster, R., Kloetzli, U., Mair, V., Frank, W., & Purtscheller, F. (1996). Miocene ultrapotassic rocks from South-western Tibet. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (141), 150-152.
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Müller, B., Kloetzli, U., Schaltegger, U., & Flisch, M. (1996). Early Cambrian oceanic plagiogranite in the Silvretta Nappe, Eastern Alps: geochemical, zircon U-Pb and Rb-Sr data from garnet-hornblende-plagioclase gneisses. Geologische Rundschau, 85(4), 822-831.
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Kloetzli, U., & Parrish, R. R. (1996). Zircon U-Pb and Pb-Pb geochronology of the Rastenberg granodiorite, South Bohemian Massif, Austria. Mineralogy and Petrology, (58), 197-214.
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Kloetzli, U., Koller, F., & Höck, V. (1995). Pre-Variscan remnant lower crustal rocks in Variscan granitoids of the South Bohemian Pluton (Bohemian Massif, Austria). Terra Nova: the European journal of geosciences, 7(141).
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Koller, F., & Kloetzli, U. (1995). Remnants of lower crustal mineral assemblages in granitoid rocks; examples from the South Bohemian Pluton, Austria. U. S. Geological Survey Circular, Report C(1129), 82-83.
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Kloetzli-Chowanetz, E., Kloetzli, U., & Koller, F. (1995). Prevariscan evolution of the Ötztal crystalline basement based on Pb-Pb-age-determination. Berichte der Deutschen Mineralogischen Gesellschaft: Beihefte zum European Journal of Mineralogy, 7, 132-132.
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Kloetzli, U. (1995). Boron isotope systematics from the Larderello geothermal field (Italy) and associated boron fractionation factors. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (140), 35-47.
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Kloetzli, U. (1995). Bericht über die Kartierungsarbeiten 1993 im Grenzbereich der Kartenblätter Lienz (179) und Hopfgarten (178). Jahrbuch der Geologischen Bundesanstalt, 137(3), 515-516.
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Kloetzli, U. (1995). Geochronologische Untersuchungen an Metagranitoiden im ostalpinen Altkristallin W und S des Tauernfensters. Führer zu den Arbeitstagung der Geologischen Bundesanstalt, 95-97.
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Müller, B., Kloetzli, U., & Flisch, M. (1995). U-Pb-zircon dating of the Older Orthogneiss suite in the Silvretta nappe, Eastern Alps: Cadomian magmatism in the Upper Austroalpine realm. Geologische Rundschau, (84), 457-465.
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Koller, F., Kloetzli, U., & Höck, V. (1994). Indications of lower crustal origin for the Weinsberg granite (South Bohemian Pluton, Austria). Journal of the Czech Geological Society, 39(1), 55-56.
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Müller, B., Kloetzli, U., & Flisch, M. (1994). Dating of the Silvretta Older Orthogneiss intrusion: U-Pb-zircon data indicate Cadomian magmatism in the Upper Austroalpine realm. Journal of the Czech Geological Society, 39(1), 74-75.
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Kloetzli, U., & Parrish, R. R. (1994). Zircon Pb-Pb and U-Pb geochronology of the Rastenberg granodiorite (Lower Austria): Evidence for the incorporation of Cadomian and possibly Archean crust into Variscan granitoids of the South Bohemian Pluton. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (139), 68-70.
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Kloetzli, U. (1994). Crustal reworking, magma generation, and intrusion history of Variscan granitoids of the South Bohemian Pluton (Bohemian Massif, Austria): A zircon Pb-Pb and U-Pb study. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (139), 320-322.
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Richter, W., Jawecki, C., Koller, F., Linner, M., Petrakakis, K., Kloetzli, U.,... Dallmeyer, R. D. (1994). Geology of the Moldanubian zone. Final Conference Pre-Alpine crust in Austria, Krems, (1-47).
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Kloetzli, U., & Parrish, R. R. (1994). Evidence for the reworking of Cadomian crust in granitoids of Central Europe (South Bohemian Pluton, Bohemian Massif, Austria): A zircon Pb/Pb and U/Pb study. In M. A. Lanphere, G. B. Dalrymple, & B. D. Turrin (Eds.), Abstracts of the Eighth International Conference on Geochronology, Cosmochronology and Isotope Geology: ICOG 8, Berkeley California USA, June 5-11, 1994 (pp. 175). (Circular; Vol. 1107). U.S. Geological Survey.
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Müller, B., Kloetzli, U., & Flisch, M. (1993). First precise dating of the Silvretta Older Orthogneiss intrusion: U-Pb data define Cadomian magmatism in the Upper Austroalpine realm. Schweizerische Mineralogische und Petrographische Mitteilungen: eine europäische Zeitschrift für Mineralogie, Geochemie und Petrographie, 74(2), 296-297.
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Kloetzli, U. (1993). Single zircon evaporation ages from the Rastenberg granodiorite: New constraints on the magmatic evolution of the South Bohemian Pluton. Terra Abstracts, 1/5(389).
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Hauzenberger, C. A., Höller, W., Hoinkes, G., Kloetzli, U., & Thöni, M. (1993). Metamorphic evolution of the Austroalpine basement in the Nonsberg area, Ultental (Val d'Ultimo), Southern Tyrol. Terra Nova: the European journal of geosciences, 5.
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Kloetzli, U. (1993). Einzelzirkon-207Pb/206Pb-Datierungen an Gesteinen der südlichen Böhmischen Masse (Rastenberger Granodiorit, Weinsberger Granit). Mitteilungen der Österreichischen Mineralogischen Gesellschaft, (138), 123-130.
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Kloetzli, U. (1992). Negative thermal ionisation mass spectrometry: A new approach to boron isotope geochemistry. Chemical Geology, (101), 111-122.
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Kloetzli, U. (1992). Critical remarks on the use of relative isotope ratios (- und -values). Journal of Alpine Geology, (38), 121-128.
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Hügi, M., & Kloetzli, U. (1991). Determination of the boron isotopic composition of tourmaline by negative thermal ionisation: A new extraction method and its application to tourmalines from the Binntal region, Swiss Alps, and the Isle of Elba. Terra Abstracts, 3(6).
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Kloetzli, U., & Hügi, M. (1991). Boron isotope geochemistry using negative thermal-ionisation mass spectrometry. Terra Abstracts, 3(8).
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Prohaska, W., Bechtel, A., & Kloetzli, U. (1991). Leucophyllite formation and alteration in shear zones (Gleinalmkristallin, Eastern Alps/Austria). Mineralogy and Petrology, (45), 195-216.
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Bürgi, A., & Kloetzli, U. (1990). New data on the evolutionary history of the Ivrea zone (Northern Italy). Bulletin of the Swiss Association of Petroleum Geologists, (56/130), 49-70.
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Kloetzli, U. (1988). Petrographische und geochronologische Untersuchungen in der Ivrea-Zone der Umgebung von Cúrsolo (Prov. Novara, Italien). Schweizerische Mineralogische und Petrographische Mitteilungen: eine europäische Zeitschrift für Mineralogie, Geochemie und Petrographie, 4(25).
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Bürgi, A., & Kloetzli, U. (1988). New isotopic data as a basis for a revised evolution model of the Ivrea zone. Universita degli studi di Milano, Supplemento, 64a, 22-24.
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Kontakt
Department of Lithospheric Research
University of Vienna
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1090 Vienna

T: +43-1-4277-534 01
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