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What kind of geological event would be dated by flakes of mica in a granite?
Wiki User
∙ 15y ago
Specks of mica would indicate that the liquid magma was in the process of cooling. When it cooled to a certain point, the crystallization temperature of mica was reached and the crystals were formed. Books, or groupings, of mica flakes as sometimes seen in metamorphized granites indicate the rock has undergone significant pressure and temperature stresses, possibly from mountain building events.
Wiki User
∙ 15y ago
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