English

Quiz "Types of rock"

Types of rock

an ultrabasic igneous rock consisting mainly of olivine

Types of rock

any of a class of exceptionally coarse-grained intrusive igneous rocks consisting chiefly of quartz and feldspar: often occurring as dykes among igneous rocks of finer grain

Types of rock

a coarse-grained plutonic igneous rock consisting almost entirely of plagioclase feldspar

Types of rock

any fine-grained igneous rock consisting essentially of quartz and feldspar

Types of rock

a coarse-grained acid igneous rock containing almost twice as much plagioclase as orthoclase: intermediate in composition between granite and diorite
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