Metamorphism. The transformation of rock by temperature and pressure Metamorphic rocks are produced by transformation of: Igneous, sedimentary and igneous rxs. Thanks to CU Boulder Geology Dept for use of some of these slides. Metamorphism.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Thanks to CU Boulder Geology Dept for use of some of these slides
Confining or hydrostatic pressure: equal in all directions
Directed pressure: largely in one direction or along a particular axis
Produced mostly by local heat source
Requires hot circulation of fluids
Requires crustal thickening and shortening
in a subduction zone
Zeolite (really low T,P; <200C)
Greenschist (low T, P; 200-450C, 10-15 km)
Blueschist (low T, high P - subduction zones)
Amphibolite (high T, P; 450-650C, 15-20 km)
Granulite (super high T, P; >700C, >25km)
Greenschist Thin Section
(orthogneiss - from igneous protolith)