TY  - JOUR
A1  - Scharf, Anke
A1  - Handy, Mark R.
A1  - Ziemann, Martin Andreas
A1  - Schmid, Stefan M.
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)
JF  - Journal of metamorphic geology
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 (T-p) of 350-480 degrees C following Late Cretaceous to Palaeogene nappe stacking in an accretionary wedge. Domain 2 in the central Tauern Window experienced T-p of 500-535 degrees 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). T-p values in the largest (Hochalm) dome range from 612 degrees C in its core to 440 degrees C at its rim. The maximum peak-temperature gradient (70 degrees Ckm(-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
KW  - Eastern Alps
KW  - high-pressure and Barrovian-type metamorphism
KW  - orogen-parallel extension
KW  - peak-temperature pattern
KW  - Raman microspectroscopy
Y1  - 2013
U6  - https://doi.org/10.1111/jmg.12048
SN  - 0263-4929
VL  - 31
IS  - 8
SP  - 863
EP  - 880
PB  - Wiley-Blackwell
CY  - Hoboken
ER  -