EPSC 201 Lecture Notes - Lecture 17: Blueschist, Oceanic Crust, Schist
11 Mar 2013
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Document Summary
Water drops from the ceiling, and calcium carbonate precipitates. When co2 is in contact with water, you get carbonic acid. When the water drops, it loses its co2, which means the water is no longer acidic, and the calci- um carbonate precipitates. The metamorphic rocks are formed through heat and pressure. Igneous rocks are eroded, and form layers of sedimentary rocks. Metamorphic rocks derive their name from metamorph, latin for change. If these rocks are in an environment of heat and pressure, they are able to undergo change. If igneous rocks on the surface are buried and heated up, they change into metamorphic rock. Sedimentary rock subjected to heat and pressure changes the com- position. Often layering effects will be observed, because the sedimentary rocks have pre-existing layers. Specific sedimentary rocks give rise specific metamorphic rocks. The first change rocks can undergo is re- crystallization. Here we see sandstone, a fine-grained sedimentary rock that has been packed together.
