Articles | Volume 10, issue 1
Solid Earth, 10, 211–223, 2019
https://doi.org/10.5194/se-10-211-2019
Solid Earth, 10, 211–223, 2019
https://doi.org/10.5194/se-10-211-2019

Research article 28 Jan 2019

Research article | 28 Jan 2019

Geochronological and thermometric evidence of unusually hot fluids in an Alpine fissure of Lauzière granite (Belledonne, Western Alps)

Emilie Janots et al.

Related authors

Dating tectonic activity in the Lepontine Dome and Rhone-Simplon Fault regions through hydrothermal monazite-(Ce)
Christian A. Bergemann, Edwin Gnos, Alfons Berger, Emilie Janots, and Martin J. Whitehouse
Solid Earth, 11, 199–222, https://doi.org/10.5194/se-11-199-2020,https://doi.org/10.5194/se-11-199-2020, 2020
Short summary
Deformation of feldspar at greenschist facies conditions – the record of mylonitic pegmatites from the Pfunderer Mountains, Eastern Alps
Felix Hentschel, Claudia A. Trepmann, and Emilie Janots
Solid Earth, 10, 95–116, https://doi.org/10.5194/se-10-95-2019,https://doi.org/10.5194/se-10-95-2019, 2019
Short summary

Related subject area

Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Geochemistry, mineralogy, petrology, and volcanology | Discipline: Geochronology
Dating tectonic activity in the Lepontine Dome and Rhone-Simplon Fault regions through hydrothermal monazite-(Ce)
Christian A. Bergemann, Edwin Gnos, Alfons Berger, Emilie Janots, and Martin J. Whitehouse
Solid Earth, 11, 199–222, https://doi.org/10.5194/se-11-199-2020,https://doi.org/10.5194/se-11-199-2020, 2020
Short summary
Temporospatial variation in the late Mesozoic volcanism in southeast China
Xianghui Li, Yongxiang Li, Jingyu Wang, Chaokai Zhang, Yin Wang, and Ling Liu
Solid Earth, 10, 2089–2101, https://doi.org/10.5194/se-10-2089-2019,https://doi.org/10.5194/se-10-2089-2019, 2019
Short summary

Cited articles

Austrheim, H. and Griffin, W.: Shear Deformation and Eclogite Formation Within Granulite-Facies Anorthosites of the Bergen Arcs, Western Norway, Chem. Geol., 50, 267–281, https://doi.org/10.1016/0009-2541(85)90124-X, 1985. 
Bellanger, M., Augier, R., Bellahsen, N., Jolivet, L., Monié, P., Baudin, T., and Beyssac, O.: Shortening of the European Dauphinois margin (Oisans Massif, Western Alps): New insights from RSCM maximum temperature estimates and 40Ar/39Ar in situ dating, J. Geodyn., 83, 37–64, https://doi.org/10.1016/j.jog.2014.09.004, 2015. 
Bergemann, C., Gnos, E., Berger, A., Whitehouse, M., Mullis, J., Wehrens, P., Pettke, T., and Janots, E.: Th-Pb ion probe dating of zoned hydrothermal monazite and its implications for repeated shear zone activity: An example from the Central Alps, Switzerland, Tectonics, 36, 2016TC004407, https://doi.org/10.1002/2016TC004407, 2017. 
Berger, A., Gnos, E., Janots, E., Whitehouse, M., Soom, M., Frei, R., and Waight, T. E.: Dating brittle tectonic movements with cleft monazite: Fluid-rock interaction and formation of REE minerals, Tectonics, 32, 1176–1189, https://doi.org/10.1002/tect.20071, 2013. 
Bernet, M.: A field-based estimate of the zircon fission-track closure temperature, Chem. Geol., 259, 181–189, 2009. 
Download
Short summary
This geochronological and thermometric study reveals unusually hot fluids in an Alpine-type fissure of granite from the external crystalline massif (Western Alps). The fluid is estimated to be 150-250 °C hotter than the host rock and requires a dynamic fluid pathway at mid-crustal conditions in the ductile regime. This fluid circulation resets the zircon fission track thermochronometer, but only at the fissure contact. Thermal disturbances due to advective heating appear to be localized.