Argon age dating

University of Salzburg

Salzburg | Website

Core facility (CF)

Short Description

The Argon age dating is the only one in Austria and in the near foreign countries and is therefore much in demand. The Ar-Ar-age dating includes as a central facility a high-resolution gas mass spectrometer in which individual minerals of about 0.25 mm size are degassed by means of laser systems and thus diffusion experiments can be carried out. Thus, precise age of minerals, rocks and geological processes of various kinds can be determined. Extensive preparatory work is used to prepare for the age dating: Grinding laboratory for the separation and concentration of rock minerals for the identification of minerals and structures, laboratories for rock and mineral processing, optical microscopy laboratory for the documentation of the examined rocks and minerals, scanning electron microscopy for the identification of mineral phases. Small amounts of the separated mineral grains are irradiated in a reactor and then measured in the gas mass spectrometer.

Contact Person

Prof. Dr. Franz Neubauer

Research Services

Basic research
Deciphering of mountains and associated sedimentary basins
Characterization of the geological time scale, e.g. for the Paratethys

Applied research
Dating of the formation of ore deposit provinces
Dating the emergence of industrial mineral deposits

Methods & Expertise for Research Infrastructure

Argon age dating (or Ar-Ar age dating for purposes of determining the 40Ar/39Ar ratio) is one of the two most important age dating methods in geology because of its high methodological applicability and is also used in neighboring disciplines (e.g., geomorphology, anthropology).
The dating of geological processes is one of the central questions in basic research and many fields of application of geology. This method also calibrates the geological time scale.

With the Ar-Ar method one can in principle date all K-containing minerals and rocks, from the age of the oldest known rocks (meteorites) to very young rocks (e.g. lava of the Vesuvius eruption of 79 AD). The calculated age gives the temperature-dependent time at which the system has been closed for Ar. The method determines the age of all types of rocks and geological processes, as well as processes of formation of minerals, rocks, ores, industrial minerals as well as petroleum.

Equipment

Prof. Dr. Franz Neubauer
Fachbereich Geographie und Geologie
0043 662 8044 5401
franz.neubauer@sbg.ac.at
http://www.uni-salzburg.at/index.php?id=22931&MP=44-44784
Please contact us via science.plus@sbg.ac.at, or contact the responsible person for this section, mentioned in the contact field.
Prof. Sibila BOROJEVIĆ ŠOŠTARIĆ, University of Zagreb, Croatia
Prof. Ladislav PALINKAS, University of Zagreb, Croatia
Prof. Gerold ZULAUF, University of Frankfurt / Main, Germany
Prof. SEYFRIED, University of Freiberg, Germany
Prof. Anke FRIEDRICH, University of Munich, Germany
Dr. Yamirka ROJAS-AGRAMONTE, University of Mainz, Germany
Dr. Gaelle PLISSART, University of Leuven, Belgium
Prof. Michael Wagreich, University of Vienna
Geological Survey, Vienna
Prof. Harry FRITZ, University of Graz, Austria
Prof. Yunpeng DONG, Northwest University, Xian, China
Prof. Yongjiang LIU, Jilin University, Changchun, China
Prof. Shoumai REN, Strategic Research Center for Oil and Gas, MLR, Beijing, China
Dr. Fariba KARGARANBAFGHI, University of Yazd, Iran
Doctoral students from Tehran University, Iran
Prof. Zivko IVANOV, University of Sofia, Bulgaria
Geochemistry and isotopic studies of REE-bearing Sangan Fe-Skarn, NE Iran
2018-2020
OEAD: Impulse Austria-Iran

Graphitic carbon: Formation and destruction of graphitic material in fault zones: Implications for fault strength and the carbon cycle
2015-2018
FWF-Projekt: P 28313-N29

Polyhalite: a key for dating sedimentary und tectonic processes of evaporites
2011-2014
FWF-Projekt: P22728

Late-stage orogenic evolution: How to link surface motion with distinct deep lithospheric processes
2010–2014
FWF-Projekt: P22110

Exhumation of Metamorphic Core Complexes
2011-2014
FWF-Projekt: M-1343

Subducted Cuba: Accretion of island arc systems at the northern margin of the Carribbean subduction system
2010-2015
ÖAW (IGCP 546)

GEODE - Geodynamics und ore deposit evolution
1998–2005
European Science Foundation
(umfangreiche Kooperationen mit schweizerischen und südosteuropäischen Ländern)

Dating of Detrital White Mica
1995–1998
FWF-Projekt: 10506
The Oligocene Reifnitz tonalite (Austria) and its host rocks: implications for Cretaceous and Oligocene-Neogene tectonics of southeastern Eastern Alps. Geologica Carpathica, 69, 237–253,
2018
Neubauer, F., Heberer, B., Dunkl, I., Liu, S., Bernroider, M., Dong, Y.
Geologica Carpathica, 69, 237–253
doi: 10.1515/geoca-2018-0014

Timing of orogenic exhumation processes of the Qinling Orogen: evidence from 40Ar/39Ar dating.
2018
Dong, Y.-P., Neubauer, F., Genser, J., Sun, S.-S.. Yang, Z., Zhang, F., Cheng, B., Liu, X.-M., Zhang, G.-W.
Tectonics, Tect20977
doi: 10.1029/2017TC004765

Eocene high-pressure metamorphism and Oligocene retrogression on Naxos, Cyclades, Greece: Significance for Aegean tectonics and 40Ar/39Ar dating in polyphase metamorphic rocks.
2018
Cao, S., Neubauer, F., Bernroider, M., Genser, J.
Tectonophysics, 745, 66–94.
https://doi.org/10.1016/j.tecto.2018.08.009

Low-grade retrogression of a high-temperature metamorphic core complex: Naxos, Cyclades, Greece.
2017
Cao, S., Neubauer, F., Bernroider, F., Genser, J., Liu, J., Friedl, G.,
Geological Society of America Bulletin, 129, 93–117,
http://dx.doi:10.1130/B31502.1.

40Ar/39Ar ages of crystallisation and recrystallisation of rock-forming polyhalite in Alpine rocksalt deposit. In: Jourdan, F., Mark, D. F. & Verati, C. (eds.) 2013. Advances in 40Ar/39Ar Dating from Archaeology to Planetary Sciences.
2013
Leitner, C., Neubauer, F., Genser, J., Borojević-Šoštarić, B., Rantitsch, G. (2013):
Geological Society, London, Special Publications, 378, 207–224,
dx.doi.org/10.1144/SP378.5.

Geochemical and isotopic evidence for Carboniferous rifting - mafic dykes in the central Sanandaj-Sirjan zone (Dorud-Azna, West Iran)
2017
Shakerardakani, F., Neubauer, F., Bernroider, M., von Quadt, A., Peytcheva, I., Liu, X., Genser, J., Monfaredi, B., Masoudi, F.
Geologica Carpathica, 68/3, 229–247
doi: 10.1515/geoca-2017-0017

Low-grade retrogression of a high-temperature metamorphic core complex: Naxos, Cyclades, Greece. Geological Society of America Bulletin, 129, 93–117
2017
Cao, S., Neubauer, F., Bernroider, F., Genser, J., Liu, J., Friedl, G.
http://dx.doi:10.1130/B31502.1.

40Ar/39Ar ages of crystallisation and recrystallisation of rock-forming polyhalite in Alpine rocksalt deposit. In: Jourdan, F., Mark, D. F. & Verati, C. (eds.) 2013. Advances in 40Ar/39Ar Dating from Archaeology to Planetary Sciences. Geological Society, London, Special Publications, 378, 207–224
2013
Leitner, C., Neubauer, F., Genser, J., Borojević-Šoštarić, B., Rantitsch, G. (2013)
dx.doi.org/10.1144/SP378.5.

The temporal evolution of the active margin along the Southeast Anatolian Orogenic Belt (SE Turkey)
2016
Karaǒglan F., Parlak O., Hejl E., Neubauer F., Klötzli U.
Evidence from U–Pb, Ar-Ar and fission track chronology. Gondwana Research
DOI: 10.1016/j.gr.2015.12.011.

Formation of an intra-orogenic transtensional basin: the Neogene Wagrain basin in the Eastern Alps
2016
Neubauer F.
Swiss Journal of Geosciences
DOI: 10.1007/s00015-016-0206-7.

Petrogenesis and 40Ar/39Ar dating of proto-forearc crust in the early Cretaceous Caribbean Arc: The La Tinta mélange (eastern Cuba) and its easterly correlation in Dominican Republic
2015
Lázaro C., Blanco-Quintero I. F., Proenza J. A., Rojas-Agramonte Y., Neubauer F., Núñez-Cambra K., Garcia-Casco A.
International Geology Review

Geochemistry of enclaves and host granitoids from the Kashan granitoid complex, central Iran: Implications for enclave generation by interaction of cogenetic magmas
2015
Honarmand M., Omrani N. R., Neubauer F., Nabatian G., Emami M. H., von Quadt A., Dong Y., Bernroider M.
Journal of Earth Science, 26, 5, 626-647
DOI: 10.1007/s12583-015-0584-1.

Rapid Eocene extension in the Chapedony metamorphic core complex, Central Iran: Constraints from 40Ar/39Ar dating
2015
Kargaranbafghi F., Neubauer F., Genser J.
Journal of Asian Earth Sciences, 106, 156-168
DOI: 10.1016/j.jseaes.2015.03.010.

The tectonic evolution of western Central Iran seen through detrital white mica
2015
Kargaranbafghi F., Neubauer F., Genser J.
Tectonophysics, 651-652, 138-151
DOI: 10.1016/j.tecto.2015.03.019.

40Ar/39Ar ages of crystallisation and recrystallisation of rock-forming polyhalite in Alpine rocksalt deposit
2013
Leitner C., Neubauer F., Genser J., Borojevi-Šoštari B., Rantitsch G.
Jourdan, F., Mark, D. F. & Verati, C. (eds.) Advances in 40Ar/39Ar Dating from Archaeology to Planetary Sciences. Geological Society, London, Special Publications, 378, 207-224
DOI: 10.1144/SP378.5.

The origin and age of the metamorphic sole from the Rogozna Mts., Western Vardar Belt: New support for the one-ocean model for the Balkan ophiolites
2014
Borojevic-Šoštari S., Palinkaš A.L., Neubauer F., Cvetkovic V., Bernroider M., Genser J.
Lithos, 192-195, 39-55
DOI: 10.1016/j.lithos.2014.01.011.

Polyphase exhumation in the Western Qinling Mountains, China: Rapid Early Cretaceous cooling along a lithospheric-scale tear fault and pulsed Cenozoic uplift
2014
Heberer B., Anzenbacher T., Neubauer F., Genser J., Dong Y., Dunkl I.
Tectonophysics, 617, 31-43

40Ar/39Ar ages of crystallisation and recrystallisation of rock-forming polyhalite in Alpine rocksalt deposit
2013
Leitner C., Neubauer F., Genser J., Borojevi-Šoštari B., Rantitsch G.
In: Jourdan, F., Mark, D. F. & Verati, C. (eds.)
Advances in 40Ar/39Ar Dating from Archaeology to Planetary Sciences.
Geological Society, London, Special Publications, 378, 207-224
DOI: dx.doi.org/10.1144/SP378.5.

Geology, alteration, age and origin of iron oxide-apatite deposits in UpperEocene quartz monzonite, Zanjan district, NW Iran
2014
Nabatian G., Ghaderi M., Corfu F., Neubauer F., Bernroider M., Prokofiev V., Honarmand M.
Mineralium Deposita, 49, 217-234
DOI: 10.1007/s00126-013-0484-1.

An anorogenic pulse in a typical orogenic setting: Geochemical and geochronological record in the East Serbian latest Cretaceous to Paleocene alkaline rocks
2013
Cvetkovic V., Šaric K., Prelevic D., Genser J., Neubauer F., Hoeck V., von Quadt A.
Lithos, 180-181, 181-199
DOI: 10.1016/j.lithos.2013.08.013.

Origin of deformed halite hopper crystals, pseudomorphic anhydrite cubes and polyhalite in Alpine evaporites (Austria, Germany)
2013
Leitner C., Neubauer F., Marschallinger R., Genser J., Bernroider M.
International Journal of Earth Sciences, 102, 813-829

Cimmerian evolution of the Central Iranian basement: Evidence from metamorphic units of the Kashmar-Kerman Tectonic Zone
2013
Masoodi M., Yassaghi A., Nogole Sadat M. A. A., Neubauer F., Bernroider M., Friedl G., Genser J., Houshmandzadeh A.
Tectonophysics, 588, 189-208
DOI: 10.1016/j.tecto.2012.12.012.

The Haselgebirge evaporitic mélange in central Northern Calcareous Alps (Austria): part of the Permian to Lower Triassic rift of the Meliata ocean?
2013
Schorn A., Neubauer F., Genser J., Bernroider M.
Tectonophysics, 583, 28-48
DOI: 10.1016/j.tecto.2012.10.016.