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Showing 1 to 4 of 4 for “"plagiogranites"”.
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Granitic Rocks of Ophiolites
… and chemical composition of granitic rocks (plagiogranites) and associated formations in five ophiolites are described. In addition, the occurrence of similar rocks in other ophiolites, some island arcs and in the ocean crust is reviewed. Plagiogranites in ophiolites can be distinguished from …
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Making oceanic plagiogranite bodies by thermal migration: evidence from the Agros transect, Troodos ophiolite, Cyprus
… form within the ocean crust remains enigmatic. Plagiogranites are anomalously high in their silica content relative to basalt, and their petrogenesis has been primarily attributed to either extreme (>90%) fractional crystallization of a basaltic melt (Haase et al., 2006) or to partial melting …
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Ghost granophyre: A new texture with implications for plagiogranite differentiation and Ti-in-Quartz thermometry
… is overwhelmingly mafic with the exception of plagiogranites, which can represent relatively extensive volumes of silicic material locally and are common at the gabbro-sheeted dike contact. The origin of plagiogranites is poorly understood. Granophyre, which is also poorly understood, is a …
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The Geology And Geochemistry Of The Archean Flavrian Pluton, Noranda, Quebec
… plagiogranite and breccia, and late diorite. The plagiogranites were coeval with the Lac Dufault granodiorite to the east. (delta)D and (delta)('18)O results indicate that the landmass above the Flavrian emerged above sealevel prior to the emplacement of the plagiogranites. A significant component …