@article{22,
  keywords = {Alpine collision, External crystalline Massifs, Helvetic-Dauphinois-Proven{\c c}al domain, High-K calc-alkaline lamprophyres, Permian-Triassic crustal thinning},
  author = {Marco Filippi and Davide Zanoni and Jean-Marc Lardeaux and Maria Spalla and Guido Gosso},
  title = {Evidence of Tethyan continental break-up and Alpine collision in the Argentera-Mercantour Massif, Western Alps},
  abstract = {In the Argentera-Mercantour Massif, swarms of high-K calc-alkaline lamprophyres intruded into Carboniferous migmatites and early Permian granites, likely in Permian-Triassic times. The dykes collected multiple magmatic injections, the latest of which of alkaline affinity. Syn-intrusive vesicles and straight chilled margins suggest that the lamprophyres emplaced at a shallow crustal level. Lower greenschist facies mineral assemblages replaced lamprophyre igneous minerals as a result of late-intrusive hydrothermal circulation that occurred soon after the dyke emplacement. The hydrothermal event is constrained at T = 300{\textendash}350{\textdegree}C and P < 0.1 GPa by matching thermobarometry and pseudosection results. During the Alpine collision, the lamprophyres were intersected by upper greenschist facies mylonitic shear zones developed at T = 420{\textendash}450{\textdegree}C and P = 0.2{\textendash}0.4 GPa, which are the metamorphic peak conditions of the Argentera-Mercantour Massif in Alpine times.},
  year = {2020},
  volume = {372-373},
  pages = {105653},
  month = {2020/11/01/},
  isbn = {0024-4937},
  url = {http://www.sciencedirect.com/science/article/pii/S0024493720302905},
}