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Cumulate

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A general term for igneous rocks composed of crystals that accumulated due to gravitational settling in a magma.
An igneous rock formed by the accumulation of crystals that settle out from a magma by the action of gravity; examples include layered igneous deposits such as the Bushveld complex in South Africa and the Stillwater complex in Montana.

Synonym: accumulative rock


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Classification of CumulateHide

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Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press

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