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    Magmatic and metamorphic history of mafic dykes from the Argentera-Mercantour Massif, southwestern Alps: implications for Variscan and Alpine tectonics
    Marco FilippiL. CinquegraniG. GossoJean‐Marc LardeauxMaria Iole SpallaChrystèle VératiDavide Zanoni
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    Massif
    Topics:
    Geology and Paleoclimatology Research
    Geological formations and processes
    Geological and Geochemical Analysis
    Evolution of Mg/Fe Ratios in Late Variscan Plutonic Rocks from the External Crystalline Massifs of the Alps (France, Italy, Switzerland)
    Journal of Petrology (1999)
    François DehezM. Lemmet
    Late Variscan plutonic bodies are widespread in the External Crystalline Massifs of the Alps (Argentera, Pelvoux, Belledonne, Grandes Rousses, Mont Blanc, Aiguilles Rouges, Aar, Gotthard). They can be classified on the basis of their Mg/(Fe + Mg) ratio and mafic mineral content (expressed by the B = Fe + Mg + Ti parameter). Together with available ages of emplacement, this classification highlights the existence of two plutonic suites, one early, Viséan (∼330–340 Ma), and highly magnesian, the other later, mainly Stephanian (∼295–305 Ma), and more ferriferous. This evolution from a magnesian plutonism to a more ferriferous one, which also occurs in other Variscan massifs (e.g. Corsica), might be accounted for by a combination of factors related to the nature of the source of the magmas, the physical and chemical conditions of melting, and the Late Variscan geodynamic setting. As a basis for these considerations a comprehensive review is presented of all the External Crystalline Massifs and theirLate Variscan intrusions.
    Massif
    Plutonism
    Citations (88)
    Deformation, metamorphism and U-Th-Pb geochronology in the Agly Massif (Pyrenees): deciphering between late-Variscan and Alpine tectonics
    HAL (Le Centre pour la Communication Scientifique Directe) (2019)
    Jonas VanardoisPierre TrapFrançoise RogerPhilippe GonçalvesDidier Marquer
    Geochronology
    Massif
    Citations (0)
    From Variscan to Alpine tectonics: magmatic and metamorphic evolution of the Argentera-Mercantour dioritic dyke swarm
    Marco FilippiG. GossoJean‐Marc LardeauxMaria Iole SpallaChrystèle Vérati
    Charnockite
    Citations (0)
    Metamorphic evolution of the Assuéros Layered Complex, Argentera Massif (Western Alps).
    Simona FerrandoSimone LentiniA. ValsecchiChiara GroppoRiccardo Compagnoni
    Massif
    Citations (0)
    Variscan eclogites from the Argentera–Mercantour Massif (External Crystalline Massifs, SW Alps): a dismembered cryptic suture zone
    International Journal of Earth Sciences (2020)
    Fabrice JouffrayMaria Iole SpallaJean Marc LardeauxMarco FilippiGisella Rebay
    Massif
    Protolith
    Amphibole
    Citations (22)
    Deformation-metamorphism relationships in the eclogitized Permian granitoids and country rocks of Mt. Mucrone southern slope (sesia-Lanzo Zone, Italian Western Alps).
    Francesco DelleaniDaniele CastelliG. GossoMaria Iole Spalla
    Citations (0)
    Faulting, fluid-rock interaction and hydrothermal mineralisation in ultramafic rocks (Voltri Massif, Ligurian Alps)
    Marco Scarsi
    Massif
    Ultramafic rock
    Citations (0)
    High-temperature overprint in high-pressure rocks from Monte Duria (Adula Nappe, Italy): clues for the subduction/exhumation history of the Central Alps
    Simone TumiatiLuca PellegrinoStefano ZanchettaNadia Malaspina
    Citations (0)
    Chronological Constraints for Variscan vs Alpine Eclogite Facies Metamorphism in the Basement Units of the Eastern Alps
    Mineralogical Magazine (1994)
    Martin Thöni
    Basement
    Citations (0)
    Geological map of the Mount Avic massif (Western Alps Ophiolites)
    Journal of Maps (2014)
    Emanuele FontanaPaola TartarottiMatteo PanseriSalvatore Buscemi
    The Mount Avic massif consists of serpentinized peridotite exposed in the southern Aosta valley (Northwestern Alps), covering an area of ca. 180 km2. The 1:10,000 scale geological map is located in the southern portion of the massif, where serpentinite is in contact with ophiolitic rocks pertaining to the Piemonte Zone, which represents the fossil Mesozoic Tethyan ocean. Southwards, ophiolites are overthrusted by the continental-derived Austroalpine Mont Glacier unit. Serpentinite consists of antigorite, magnetite, and coarse grained Ti-clinohumite, olivine, and diopside, which are reminiscent of the original mantle texture. Rodingitic mafic dykes are intruded within serpentinite; other mafic rocks, consisting of (not rodingitized) metagabbro and metabasalt with relict eclogitic minerals, occur as tectonic slices associated with serpentinite, calcschist and sulphide-rich epidosite. The map gives detailed and updated information on the structure and lithostratigraphy of the Mount Avic ophiolites, providing an insight to the mantle-crust transition of the Tethyan oceanic lithosphere.
    Massif
    Peridotite
    Ultramafic rock
    Citations (16)