Английская Википедия:Intermediate composition

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Шаблон:Unreferenced

In igneous petrology, an intermediate composition refers to the chemical composition of a rock that has 51.5Шаблон:En dash63 wt% SiO2 being an intermediate between felsic and mafic compositions. Typical intermediate rocks include andesite and trachyandesite among volcanic rocks and diorite and granodiorite among plutonic rocks.


Шаблон:Igneous rocks


Шаблон:Petrology-stub Шаблон:Geochem-stub