Peak-temperature patterns of polyphase metamorphism resulting from accretion, subduction and collision (eastern tauern window, european alps) - a study with raman microspectroscopy on carbonaceous material (RSCM)

A. Scharf, M. R. Handy, M. A. Ziemann, S. M. Schmid

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Raman microspectroscopy on carbonaceous material (RSCM) from the eastern Tauern Window indicates contrasting peak-temperature patterns in three different fabric domains, each of which underwent a poly-metamorphic orogenic evolution: Domain 1 in the northeastern Tauern Window preserves oceanic units (Glockner Nappe System, Matrei Zone) that attained peak temperatures (Tp) of 350-480 °C following Late Cretaceous to Palaeogene nappe stacking in an accretionary wedge. Domain 2 in the central Tauern Window experienced Tp of 500-535 °C that was attained either within an exhumed Palaeogene subduction channel or during Oligocene Barrovian-type thermal overprinting within the Alpine collisional orogen. Domain 3 in the Eastern Tauern Subdome has a peak-temperature pattern that resulted from Eo-Oligocene nappe stacking of continental units derived from the distal European margin. This pattern acquired its presently concentric pattern in Miocene time due to post-nappe doming and extensional shearing along the Katschberg Shear Zone System (KSZS). Tp values in the largest (Hochalm) dome range from 612 °C in its core to 440 °C at its rim. The maximum peak-temperature gradient (≤70 °C km-1) occurs along the eastern margin of this dome where mylonitic shearing of the Katschberg Normal Fault (KNF) significantly thinned the Subpenninic- and Penninic nappe pile, including the pre-existing peak-temperature gradient.

Original languageEnglish
Pages (from-to)863-880
Number of pages18
JournalJournal of Metamorphic Geology
Volume31
Issue number8
DOIs
Publication statusPublished - Oct 2013

Fingerprint

nappe
metamorphism
subduction
collision
accretion
Domes
Shearing
stacking
temperature
Thermal gradients
Paleogene
temperature gradient
dome
Oligocene
Temperature
overprinting
accretionary prism
normal fault
Piles
shear zone

Keywords

  • Doming
  • Eastern Alps
  • High-pressure and Barrovian-type metamorphism
  • Orogen-parallel extension
  • Peak-temperature pattern
  • Raman microspectroscopy

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

Cite this

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title = "Peak-temperature patterns of polyphase metamorphism resulting from accretion, subduction and collision (eastern tauern window, european alps) - a study with raman microspectroscopy on carbonaceous material (RSCM)",
abstract = "Raman microspectroscopy on carbonaceous material (RSCM) from the eastern Tauern Window indicates contrasting peak-temperature patterns in three different fabric domains, each of which underwent a poly-metamorphic orogenic evolution: Domain 1 in the northeastern Tauern Window preserves oceanic units (Glockner Nappe System, Matrei Zone) that attained peak temperatures (Tp) of 350-480 °C following Late Cretaceous to Palaeogene nappe stacking in an accretionary wedge. Domain 2 in the central Tauern Window experienced Tp of 500-535 °C that was attained either within an exhumed Palaeogene subduction channel or during Oligocene Barrovian-type thermal overprinting within the Alpine collisional orogen. Domain 3 in the Eastern Tauern Subdome has a peak-temperature pattern that resulted from Eo-Oligocene nappe stacking of continental units derived from the distal European margin. This pattern acquired its presently concentric pattern in Miocene time due to post-nappe doming and extensional shearing along the Katschberg Shear Zone System (KSZS). Tp values in the largest (Hochalm) dome range from 612 °C in its core to 440 °C at its rim. The maximum peak-temperature gradient (≤70 °C km-1) occurs along the eastern margin of this dome where mylonitic shearing of the Katschberg Normal Fault (KNF) significantly thinned the Subpenninic- and Penninic nappe pile, including the pre-existing peak-temperature gradient.",
keywords = "Doming, Eastern Alps, High-pressure and Barrovian-type metamorphism, Orogen-parallel extension, Peak-temperature pattern, Raman microspectroscopy",
author = "A. Scharf and Handy, {M. R.} and Ziemann, {M. A.} and Schmid, {S. M.}",
year = "2013",
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T1 - Peak-temperature patterns of polyphase metamorphism resulting from accretion, subduction and collision (eastern tauern window, european alps) - a study with raman microspectroscopy on carbonaceous material (RSCM)

AU - Scharf, A.

AU - Handy, M. R.

AU - Ziemann, M. A.

AU - Schmid, S. M.

PY - 2013/10

Y1 - 2013/10

N2 - Raman microspectroscopy on carbonaceous material (RSCM) from the eastern Tauern Window indicates contrasting peak-temperature patterns in three different fabric domains, each of which underwent a poly-metamorphic orogenic evolution: Domain 1 in the northeastern Tauern Window preserves oceanic units (Glockner Nappe System, Matrei Zone) that attained peak temperatures (Tp) of 350-480 °C following Late Cretaceous to Palaeogene nappe stacking in an accretionary wedge. Domain 2 in the central Tauern Window experienced Tp of 500-535 °C that was attained either within an exhumed Palaeogene subduction channel or during Oligocene Barrovian-type thermal overprinting within the Alpine collisional orogen. Domain 3 in the Eastern Tauern Subdome has a peak-temperature pattern that resulted from Eo-Oligocene nappe stacking of continental units derived from the distal European margin. This pattern acquired its presently concentric pattern in Miocene time due to post-nappe doming and extensional shearing along the Katschberg Shear Zone System (KSZS). Tp values in the largest (Hochalm) dome range from 612 °C in its core to 440 °C at its rim. The maximum peak-temperature gradient (≤70 °C km-1) occurs along the eastern margin of this dome where mylonitic shearing of the Katschberg Normal Fault (KNF) significantly thinned the Subpenninic- and Penninic nappe pile, including the pre-existing peak-temperature gradient.

AB - Raman microspectroscopy on carbonaceous material (RSCM) from the eastern Tauern Window indicates contrasting peak-temperature patterns in three different fabric domains, each of which underwent a poly-metamorphic orogenic evolution: Domain 1 in the northeastern Tauern Window preserves oceanic units (Glockner Nappe System, Matrei Zone) that attained peak temperatures (Tp) of 350-480 °C following Late Cretaceous to Palaeogene nappe stacking in an accretionary wedge. Domain 2 in the central Tauern Window experienced Tp of 500-535 °C that was attained either within an exhumed Palaeogene subduction channel or during Oligocene Barrovian-type thermal overprinting within the Alpine collisional orogen. Domain 3 in the Eastern Tauern Subdome has a peak-temperature pattern that resulted from Eo-Oligocene nappe stacking of continental units derived from the distal European margin. This pattern acquired its presently concentric pattern in Miocene time due to post-nappe doming and extensional shearing along the Katschberg Shear Zone System (KSZS). Tp values in the largest (Hochalm) dome range from 612 °C in its core to 440 °C at its rim. The maximum peak-temperature gradient (≤70 °C km-1) occurs along the eastern margin of this dome where mylonitic shearing of the Katschberg Normal Fault (KNF) significantly thinned the Subpenninic- and Penninic nappe pile, including the pre-existing peak-temperature gradient.

KW - Doming

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