(geology) A rock formed at considerable depth by crystallization of magma or by chemical alteration.
plutonic rock
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(plü′tän·ik ′räk)
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An igneous rock, such as gabbro or granite, which has cooled and crystallized slowly at great depth. A pluton is a mass of igneous rock which has solidified underground. Plutons vary in size from batholiths to sills and dikes.
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 | hornblendite (petrology) |
| agmatite (petrology) |
| appinite (petrology) |
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 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
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| Geography Dictionary. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved. Read more |
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Mentioned in
- hornblendite (petrology)
- agmatite (petrology)
- appinite (petrology)
- syenodiorite (petrology)
- syenogabbro (petrology)
- alsbachite (petrology)
- anatexis (geology)
- anorthosite (petrology)
- bigwoodite (petrology)
- granite (petrology)
- granodiorite (petrology)
- ijolite (petrology)
- jacupirangite (petrology)
- nepheline syenite (petrology)
