MAGMATIC ROCKS

Miscellaneous

Notes

(Richard Willis)

Rocks formed directly by cooling magma at great depths, in contrast to eruptive or volcanic rocks that are in many cases formed on the Earth’s surface upon cooling, and in contrast to plutonic rocks which though also form at great depths are not so directly of magma ancestry.

Authors

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<note>Rocks formed directly by cooling magma at great depths, in contrast to eruptive or volcanic rocks that are in many cases formed on the Earth&amp;#146;s surface upon cooling, and in contrast to plutonic rocks which though also form at great depths are not so directly of magma ancestry.&lt;BR&gt;

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