<sup>40</sup>Ar/<sup>39</sup>Ar muscovite ages from the Penninic‐Austroalpine plate boundary, Eastern Alps

Liu, Yongjiang; Genser, Johann; Handler, Robert; Friedl, Gertrude; Neubauer, Franz

doi:10.1029/2001tc900011

Cited by 54 publications

(49 citation statements)

References 28 publications

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“…on the abandonment of this palaeo-subduction interface. This age constraint is in line with results of Dingeldey et al (1997) and Liu et al (2001), which provide 40 Ar ages around 55-50 Ma for Austroalpine-Penninic interface units in the Tauern window area. These data can similarly be interpreted as dating the locking of this paleosubduction zone.…”

Section: Eocene Deformationsupporting

confidence: 73%

Abandonment of the South Penninic–Austroalpine palaeosubduction zone, Central Alps, and shift from subduction erosion to accretion: constraints from Rb/Sr geochronology

Bachmann

Glodny

Oncken

et al. 2009

JGS

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Section: Eocene Deformationsupporting

confidence: 73%

Abandonment of the South Penninic–Austroalpine palaeosubduction zone, Central Alps, and shift from subduction erosion to accretion: constraints from Rb/Sr geochronology

Bachmann

Glodny

Oncken

et al. 2009

JGS

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“…We interpret the Cretaceous cooling as a result of overall extension that has been observed in the Austroalpine nappe stack (e.g. Froitzheim et al, 1997Froitzheim et al, , 2012Fügenschuh et al, 2000;Liu et al, 2001;Kurz and Fritz, 2003).…”

Section: Interpretation and Discussionmentioning

confidence: 99%

Cretaceous to Miocene cooling of Austroalpine units southeast of the Tauern Window (Eastern Alps) constrained by multi-system thermochronometry

Woelfler¹,

Dekant²,

Frisch³

et al. 2015

AJES

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The cooling history of the Polinik and Kreuzeck Blocks of the Austroalpine units to the southeast of the Tauern Window are reexamined in the light of new mica Ar/Ar-, zircon fission track and apatite fission track data. Our new data demonstrate that the two blocks experienced a significantly different thermal evolution during Mesozoic-Cenozoic times: The Polinik Block revealed Late Cretaceous Ar/Ar ages (87.2-81.6 Ma), which reflect cooling subsequent to the thermal peak of Eo-Alpine metamorphism. The

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“…The Paleogene thermal overprint within AA units close to the northeastern corner of the TW is related to thrusting within the lowermost AA units (Liu et al 2001).…”

Section: Austroalpine Unitsmentioning

confidence: 99%

Mapping of the post-collisional cooling history of the Eastern Alps

Lüth

Willingshofer

2008

Swiss J. Geosci.

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We present a database of geochronological data documenting the post-collisional cooling history of the Eastern Alps. This data is presented as (a) georeferenced isochrone maps based on Rb/Sr, K/Ar (biotite) and fission track (apatite, zircon) dating portraying cooling from upper greenschist/amphibolite facies metamorphism (500-600 °C) to 110 °C, and (b) as temperature maps documenting key times (25, 20, 15, 10 Ma) in the cooling history of the Eastern Alps. These cooling maps facilitate detecting of cooling patterns and cooling rates which give insight into the underlying processes governing rock exhumation and cooling on a regional scale.The compilation of available cooling-age data shows that the bulk of the Austroalpine units already cooled below 230 °C before the Paleocene. The onset of cooling of the Tauern Window (TW) was in the Oligocene-Early Miocene and was confined to the Penninic units, while in the Middle-to Late Miocene the surrounding Austroalpine units cooled together with the TW towards near surface conditions. High cooling rates (50 °C/Ma) within the TW are recorded for the temperature interval of 375-230 °C and occurred from Early Miocene in the east to Middle Miocene in the west. Fast cooling post-dates rapid, isothermal exhumation of the TW but was coeval with the climax of lateral extrusion tectonics. The cooling maps also portray the diachronous character of cooling within the TW (earlier in the east by ca. 5 Ma), which is recognized within all isotope systems considered in this study.Cooling in the western TW was controlled by activity along the Brenner normal fault as shown by gradually decreasing ages towards the Brenner Line. Cooling ages also decrease towards the E-W striking structural axis of the TW, indicating a thermal dome geometry. Both cooling trends and the timing of the highest cooling rates reveal a strong interplay between E-W extension and N-S orientated shortening during exhumation of the TW.

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⁴⁰Ar/³⁹Ar muscovite ages from the Penninic‐Austroalpine plate boundary, Eastern Alps

Cited by 54 publications

References 28 publications

Abandonment of the South Penninic–Austroalpine palaeosubduction zone, Central Alps, and shift from subduction erosion to accretion: constraints from Rb/Sr geochronology

Abandonment of the South Penninic–Austroalpine palaeosubduction zone, Central Alps, and shift from subduction erosion to accretion: constraints from Rb/Sr geochronology

Cretaceous to Miocene cooling of Austroalpine units southeast of the Tauern Window (Eastern Alps) constrained by multi-system thermochronometry

Mapping of the post-collisional cooling history of the Eastern Alps

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40Ar/39Ar muscovite ages from the Penninic‐Austroalpine plate boundary, Eastern Alps

Cited by 54 publications

References 28 publications

Abandonment of the South Penninic–Austroalpine palaeosubduction zone, Central Alps, and shift from subduction erosion to accretion: constraints from Rb/Sr geochronology

Abandonment of the South Penninic–Austroalpine palaeosubduction zone, Central Alps, and shift from subduction erosion to accretion: constraints from Rb/Sr geochronology

Cretaceous to Miocene cooling of Austroalpine units southeast of the Tauern Window (Eastern Alps) constrained by multi-system thermochronometry

Mapping of the post-collisional cooling history of the Eastern Alps

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⁴⁰Ar/³⁹Ar muscovite ages from the Penninic‐Austroalpine plate boundary, Eastern Alps