Zanchetta, Stefano; Poli, Stefano; Rubatto, Daniela; Zanchi, Andrea; Bove, Giovanni Maria (2013). Evidence for deep subduction of Austroalpine crust (Texel Complex, NE Italy). Rendiconti Lincei, 24(2), pp. 163-176. Springer Milan 10.1007/s12210-013-0239-z
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We report here the discovery of UHP eclogites in the Ulfas Valley within the Texel Complex (Meran, NE Italy), which has important implications on the evolution of the Austroalpine nappe stack in the Eastern Alps. Exsolved K-feldspar and phengite lamellae within omphacite relics, together with an unusually high K-content of the host clinopyroxene, point to equilibrium pressures at least close to the quartz/coesite transition. The age of the high-pressure metamorphism is constrained by U–Pb dating of metamorphic zircon at 85 ± 4 Ma. These new data suggest pressure conditions for the Cretaceous eclogitic metamorphism of the Texel Complex higher than hitherto reported data, possibly indicating that several sectors of the Africa-Adria derived Austroalpine margin were subducted to mantle depths during the early stages of the Alpine orogeny.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Geological Sciences |
UniBE Contributor: |
Rubatto, Daniela |
Subjects: |
500 Science > 550 Earth sciences & geology |
ISSN: |
2037-4631 |
Publisher: |
Springer Milan |
Language: |
Italiano |
Submitter: |
Anja Ebeling |
Date Deposited: |
21 Jul 2016 11:07 |
Last Modified: |
11 Apr 2024 16:11 |
Publisher DOI: |
10.1007/s12210-013-0239-z |
BORIS DOI: |
10.48350/84973 |
URI: |
https://boris.unibe.ch/id/eprint/84973 |
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