Metamorphic Rock - Metamorphic Rock Black Canyon of the...

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Metamorphic Rock 11/02/2008 00:34:00 Black Canyon of the Gunnison Taffy swirl Metamorphism: transformation of preexisting rock into new rock You can take a igneous rock or sedimentary rock and submit them to heat,  pressure and fluids…the rock is altered and is now a metamorphic rock The rock is altered by having a change in texture, mineralogy (different mineral  structure), and/or composition (how much silicate/calcium/etc. is in the rock) But “no” melting (if it melted, it would be considered an igneous rock….all  changes happen in a solid state) The rock cycle….look at slideshow picture Agents of Metamorphism Temperature o Ways to increase the temp of a rock: Bury it Heat it by injecting magma Circulate hot fluids o How do we know that temperature increases with depth below surface?
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