USGS: about Science Topics: Plutonic rock

Mineral Resources On-Line Spatial Data

Plutonic rock

A rock formed at considerable depth by crystallization of magma and/or by chemical alteration. It is characteristically medium- to coarse-grained, of granitoid texture.

This category is also used for plutonic rock (phaneritic), mafic rock and plutonic rock (phanerit.

Subtopics:
Aplite
Porphyry
Pegmatite
Granitoid
Gabbroid
Alkalic intrusive rock
Ultramafic intrusive rock
Intrusive carbonatite

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