Are the Granites at Dartmoor, migmatitic or magmatic in origin?

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Are the Granites at Dartmoor, migmatitic or magmatic in origin?

2007-09-29 08:05:12 · 1 answers · asked by chunky1990 3 in Science & Mathematics ➔ Earth Sciences & Geology

1 answers

Granite is magmatic in origin. Part of the definition of a granite is "an igneous rock". Part of the definition of an igneous rock is "formed from a melt". Part of the definition of a migmatite is "a metamorphic rock with inclusions of melted rock". Since granite is not a metamorphic rock it cannot be migmatitic in origin.

2007-09-30 06:17:14 · answer #1 · answered by Amphibolite 7 · 1⤊ 1⤋