Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps

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Standard

Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps. / Wiederkehr, Michael; Sudo, Masafumi; Bousquet, Romain; Berger, Alfons; Schmid, Stefan.

I: Tectonics, Bind 28, Nr. TC6009, 2009.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Wiederkehr, M, Sudo, M, Bousquet, R, Berger, A & Schmid, S 2009, 'Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps', Tectonics, bind 28, nr. TC6009.

APA

Wiederkehr, M., Sudo, M., Bousquet, R., Berger, A., & Schmid, S. (2009). Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps. Tectonics, 28(TC6009).

Vancouver

Wiederkehr M, Sudo M, Bousquet R, Berger A, Schmid S. Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps. Tectonics. 2009;28(TC6009).

Author

Wiederkehr, Michael ; Sudo, Masafumi ; Bousquet, Romain ; Berger, Alfons ; Schmid, Stefan. / Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps. I: Tectonics. 2009 ; Bind 28, Nr. TC6009.

Bibtex

@article{6089990acab44d01a20d01ea2fe1b4d8,
title = "Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps",
abstract = "The investigated HP/LT metasedimentary unitsof the Valaisan and adjacent European domains occupya key position in the Alpine belt for understandingthe transition from early subduction-related HP/LTmetamorphism to collision-related Barrovian overprintand the evolution of mountain belts in general. Thetiming of high-pressure metamorphism, subsequentretrogression and following Barrow-type overprint wasstudied by 40Ar/39Ar dating of biotite and several whitemica generations that are well characterized in termsof mineral chemistry, texture and associated mineralassemblages. Four distinct age populations of whitemica record peak pressure conditions (42–40 Ma) andseveral stages of subsequent retrograde metamorphicevolution (36–25 Ma). Biotite isotopic analyses yieldconsistent apparent ages that cluster around 18–16 Ma forthe Barrow-type thermal overprint. The recorded isotopicdata reveal a significant time gap in the order of some20 Ma between subduction-related HP/LT metamorphismand collision-related Barrovian overprint, supporting thenotion of a polymetamorphic evolution associated witha bimodal P-T path",
author = "Michael Wiederkehr and Masafumi Sudo and Romain Bousquet and Alfons Berger and Stefan Schmid",
year = "2009",
language = "English",
volume = "28",
journal = "Tectonics",
issn = "0278-7407",
publisher = "Wiley-Blackwell",
number = "TC6009",

}

RIS

TY - JOUR

T1 - Alpine orogenic evolution from subduction to collisional thermal overprint: The 40Ar/39Ar age constraints from the Valaisan Ocean, central Alps

AU - Wiederkehr, Michael

AU - Sudo, Masafumi

AU - Bousquet, Romain

AU - Berger, Alfons

AU - Schmid, Stefan

PY - 2009

Y1 - 2009

N2 - The investigated HP/LT metasedimentary unitsof the Valaisan and adjacent European domains occupya key position in the Alpine belt for understandingthe transition from early subduction-related HP/LTmetamorphism to collision-related Barrovian overprintand the evolution of mountain belts in general. Thetiming of high-pressure metamorphism, subsequentretrogression and following Barrow-type overprint wasstudied by 40Ar/39Ar dating of biotite and several whitemica generations that are well characterized in termsof mineral chemistry, texture and associated mineralassemblages. Four distinct age populations of whitemica record peak pressure conditions (42–40 Ma) andseveral stages of subsequent retrograde metamorphicevolution (36–25 Ma). Biotite isotopic analyses yieldconsistent apparent ages that cluster around 18–16 Ma forthe Barrow-type thermal overprint. The recorded isotopicdata reveal a significant time gap in the order of some20 Ma between subduction-related HP/LT metamorphismand collision-related Barrovian overprint, supporting thenotion of a polymetamorphic evolution associated witha bimodal P-T path

AB - The investigated HP/LT metasedimentary unitsof the Valaisan and adjacent European domains occupya key position in the Alpine belt for understandingthe transition from early subduction-related HP/LTmetamorphism to collision-related Barrovian overprintand the evolution of mountain belts in general. Thetiming of high-pressure metamorphism, subsequentretrogression and following Barrow-type overprint wasstudied by 40Ar/39Ar dating of biotite and several whitemica generations that are well characterized in termsof mineral chemistry, texture and associated mineralassemblages. Four distinct age populations of whitemica record peak pressure conditions (42–40 Ma) andseveral stages of subsequent retrograde metamorphicevolution (36–25 Ma). Biotite isotopic analyses yieldconsistent apparent ages that cluster around 18–16 Ma forthe Barrow-type thermal overprint. The recorded isotopicdata reveal a significant time gap in the order of some20 Ma between subduction-related HP/LT metamorphismand collision-related Barrovian overprint, supporting thenotion of a polymetamorphic evolution associated witha bimodal P-T path

M3 - Journal article

VL - 28

JO - Tectonics

JF - Tectonics

SN - 0278-7407

IS - TC6009

ER -

ID: 32325615