Výsledky vyhledávání - "Alexis Grand'Homme"

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

Autor: Roger De Ascenção Guedes, Alexis Grand'Homme, Edwin Gnos, Emilie Janots, Anne-Magali Seydoux-Guillaume, Matthias Bernet, Magali Rossi, Damien Guillaume, Marie-Christine Boiron

Publikováno v: Solid Earth, Vol 10, Pp 211-223 (2019)
Solid Earth
Solid Earth, European Geosciences Union, 2019, 10 (1), pp.211-223. ⟨10.5194/se-10-211-2019⟩
Solid Earth, 2019, 10 (1), pp.211-223. ⟨10.5194/se-10-211-2019⟩

A multi-method investigation into Lauzière granite, located in the external Belledonne massif of the French Alps, reveals unusually hot hydrothermal conditions in vertical open fractures (Alpine-type clefts). The host-rock granite shows sub-vertical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50462d7ab0bf86f71372e16e5fbb4c22
https://www.solid-earth.net/10/211/2019/se-10-211-2019.pdf

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Advecting heating by hot fluids of an Alpine fissure in Lauzière Granite (Belledonne massif, Western Alps)

Autor: Magali Rossi, Emilie Janots, Damien Guillaume, Edwin Gnos, Marie-Christine Boiron, Anne-Magali Seydoux-Guillaume, Alexis Grand'Homme, Roger De Ascenção Guedes, Matthias Bernet

A multi-method approach investigation in the Lauziere granite, located in the external Belledonne massif of the French Alps, reveals unusually hot hydrothermal conditions in vertical open fractures (Alpine-type clefts), caused by advective heating. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::752df7f75f381cedfdedc95ca1cb6073
https://doi.org/10.5194/se-2018-84

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Mass transport and fractionation during monazite alteration by anisotropic replacement

Autor: Emilie Janots, Jörn Hövelmann, Marie-Christine Boiron, Valérie Magnin, Damien Guillaume, C. Höschen, Alexis Grand'Homme, Anne-Magali Seydoux-Guillaume

Publikováno v: Chemical Geology
Chemical Geology, Elsevier, 2018, 484, pp.51-68. ⟨10.1016/j.chemgeo.2017.10.008⟩
Chemical Geology, 2018, 484, pp.51-68. ⟨10.1016/j.chemgeo.2017.10.008⟩

The present experimental study investigates the causes of anisotropic replacement and its impact on the element mass transfer during monazite alteration by combining in situ characterization of solid and fluid products. Starting material of standard

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea576c0b80d37193f460771a77c7577f
https://hal.archives-ouvertes.fr/hal-01904674

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U-Pb geochronology on zircon and columbite-group minerals of the Cap de Creus pegmatites, NE Spain

Autor: Joan Carles Melgarejo, Marieke Van Lichtervelde, Philippe Olivier, Axel Gerdes, Michel de Saint-Blanquat, Elena Druguet, Alexis Grand'Homme, Pura Alfonso, Jean-Louis Paquette

Publikováno v: Mineralogy and Petrology
Mineralogy and Petrology, Springer Verlag, 2017, 111, pp.1-21. 〈10.1007/s00710-016-0455-1〉
Recercat. Dipósit de la Recerca de Catalunya
instname
Mineralogy and Petrology, Springer Verlag, 2017, 111, pp.1-21. ⟨10.1007/s00710-016-0455-1⟩
Dipòsit Digital de la UB
Universidad de Barcelona
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Mineralogy and Petrology, 2017, 111, pp.1-21. ⟨10.1007/s00710-016-0455-1⟩

International audience; The Cap de Creus granitic pegmatites in the eastern Catalan Pyrenees were dated using in situ U-Pb geochronology by laser ablation ICP-MS on zircon and columbite-group minerals (CGM), which are present in the different types o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d17a25d01626cecb730fd42e9f0cbf49
https://hal.archives-ouvertes.fr/hal-01457075

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Interpretation of U-Th-Pb in-situ ages of hydrothermal monazite-(Ce) and xenotime-(Y): evidence from a large-scale regional study in clefts from the western alps

Autor: Anne-Magali Seydoux-Guillaume, Valérie Bosse, Alexis Grand'Homme, R. De Ascenção Guedes, Emilie Janots

Publikováno v: Mineralogy and Petrology
Mineralogy and Petrology, Springer Verlag, 2016, 110 (6), pp.787-807. ⟨10.1007/s00710-016-0451-5⟩

International audience; In eleven Alpine clefts of the western Alps, in-situ dating of monazite-(Ce) and xenotime-(Y) has been attempted to gain insights on possible disturbances of the geochronological U-Th-Pb systems and age interpretations in hydr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::754ad1d4e69e873194e017833c77e1df
https://hal.uca.fr/hal-01637174

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Partial resetting of the U-Th-Pb systems in experimentally altered monazite: Nanoscale evidence of incomplete replacement

Autor: Alexis Grand'Homme, Anne-Magali Seydoux-Guillaume, Damien Guillaume, Valérie Bosse, Emilie Janots, Valérie Magnin

Publikováno v: Geology
Geology, 2016, 44 (6), pp.431-434
HAL
Geology, Geological Society of America, 2016, 44 (6), pp.431-434

International audience; Alteration experiments on natural monazite crystals (Manangotry standard, Madagascar)under alkali conditions at 300, 400, 500 and 600 °C and 200 MPa were conducted to clarifymechanisms behind incomplete resetting of U-Th-Pb g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a38dab3c7df80ae1ec2d9c3d764441bd
https://hal.uca.fr/hal-02045918

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