GEOL 1250 Lecture Notes - Lecture 10: James Hutton, Metamorphic Rock, Metamorphic Facies
28 May 2016
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Document Summary
Formed inside earth"s crust or mantle by recrystallization of older rocks in response to a change in temperature and pressure. In response to changes in temperature and/or pressure. Like mud = shale from increased temperature. Pressure uniform, causes changes in mineral assemblages. Body of magma rocks get hotter = contact metamorphism. Temperature and pressure conditions at which a metamorphic rock formed, as indicated by index mineral. Regions of pressure and temperature is characterized by specific assemblages of index minerals for each type of rock. The present is the key to the past . The processes that shape the universe today are the same processes in the past. Geology history of the earth"s natural processes. Rates of natural processes have remained constant.
