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- W2051681189 abstract "The systematic analysis of the spatial distribution and morphology of mafic enclaves and dykes, and of the chemistry and structures of enclosing plutonic rocks, along a 800 m deep drilling shows that: (i) the pluton is composed of several tonalitic injections, each one characterized by a specific geochemical evolution and magmatic fabric; (ii) the calc-alkaline mafic magmas are injected synchronously with enclosing melts to form the dark tonalites; (iii) the sub-alkaline mafic melts are injected slightly later. Thus, analysis of enclave distribution and morphology, enclave and enclosing rock chemistry offers a powerful tool to characterize the dynamic of magma emplacement. L'analyse systématique de la distribution spatiale et de la morphologie des enclaves et dykes basiques, de la géochimie et de la structure des faciès plutoniques encaissants, le long d'un sondage de 800 m, montre que : (i) le pluton est composé de plusieurs injections tonalitiques, caractérisées chacune par une évolution géochimique et une fabrique magmatique propres ; (ii) des magmas basiques calcoalcalins sont injectés de manière synchrone et se mélangent avec leur encaissant pour former les tonalites sombres ; (iii) des magmas basiques subalcalins sont injectés de manière pénécontemporaine mais un peu plus tardive. L'analyse de la distribution des enclaves en fonction de leur chimisme et de celui de leur encaissant offre donc un outil puissant pour caractériser la dynamique de mise en place des magmas." @default.
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- W2051681189 date "2001-04-01" @default.
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- W2051681189 title "Distribution typologique différentielle des enclaves et filons basiques dans les tonalites de Charroux–Civray (Vienne, France) : conséquences sur la dynamique de mise en place d'un pluton" @default.
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- W2051681189 doi "https://doi.org/10.1016/s1251-8050(01)01553-1" @default.
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