SIO 50 Lecture Notes - Lecture 5: High High, San Andreas Fault, Himalayas

• School: UCSD
• Department: Scripps Institution of Oceanography
• Course: SIO 50
• Professor: Geoffrey Cook

Document Summary

A rock whose texture or composition (or both) has changed due to increased t,p,or interaction with hot fluids. One of the sedimentary or igneous rock and adding/changing conditions. Easily to see the layers (kind of recognize the colors are still similar to the protolith) Non-confining pressure is always gonna produce this. Uniform and looks like homogenous little lumps. Directed pressure- unequal ressure, greater from a particular direction. There can be a preffered orientation of the grain. Confining/differential stress pressure- general pressure from all directions (equal on all sides) Crystals in metamorphic rocks are called poryphyroblasts. As intesntiy of meta. increases, crystal size increases. Migmatite- meta. rock is swirly and smeary looking and the temperature right before it becomes an igneous rock. Minerals are growing in a consistent shape; look crystalline. Lowkey like rock salt bc of the non-orientation of graining. Metamorphic grade is the degree ot which a rock has changed from the parent rock.