Granites and Their Enclaves: The Bearing of Enclaves on the Origin of GranitesIntroduction and nomenclature; enclaves of the autochthonous leucogranites with the Massif of Millevaches (French Massif Central) as an exemple; the enclaves of granites associated with basic rocks; comparison of enclaves in the different types of granite; determining the origin of enclaves... |
Contents
PREFACE | 1 |
ENCLAVES OF THE AUTOCHTHONOUS LEUCOGRANITES WITH THE MASSIF | 13 |
THE ENCLAVES OF THE AUTOCHTHONOUS GRANODIORITES AND QUARTZ | 27 |
Copyright | |
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abundant acid Aigoual albite alkali amphibole amphibolite analyses anatectic anatexis andalusite apatite aplitic assimilation aureole basic enclaves basic magma basic rocks biotite biotite granite Chemical composition chilled margins congeneric cordierite country rock crystalline schists crystals derived described developed Didier diorite dykes emplacement enclosing granite eruptive example facies feldspar feldspathization ferromagnesian fine-grained foliation formation fragments French Massif Central gabbros Geol gneiss gneissic enclaves grain granitic magma granitic massifs granodiorites granophyre hornblende hornfels hornfelses igneous rocks inclusions intrusive granites Lacroix Lameyre lavas leucogranites limestones magma Massif Central metamorphic metasomatic metres mica-schists micaceous microgranite microgranular enclaves migmatitic migmatitic granites Millevaches minerals muscovite nodules occur orientation origin phenocrysts Photo plagioclase plutonic porphyritic porphyritic aplites potassic feldspar pyroxene quartz quartzite rapakivi recrystallization relict restites result riebeckite rock types schists schlieren sedimentary sillimanite SiO2 surmicaceous enclaves swarms TABLE texture tonalite tourmaline Velay Granite xenolithic xenolithic enclaves zone