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Subduction Zone Metamorphism
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Classroom Contents
Geology - Metamorphic Rocks
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- 1 Intro
- 2 What Is Metamorphism?
- 3 Metamorphic Grade
- 4 What Drives Metamorphism?
- 5 Confining Pressure and Differential Stress
- 6 Metamorphic Rocks and Minerals
- 7 Metamorphic Textures Foliation describes any planar arrangement of mineral grains or structural features within a rock - Examples of folation
- 8 Solid State Flow
- 9 Excellent Slaty Cleavage
- 10 Porphyroblasts Other metamorphic textures
- 11 Common Metamorphic Rocks
- 12 Nonfoliated Metamorphic Rocks
- 13 Types of Metamorphic Environments TEMPERATURE INCREASES CENTIGRADE
- 14 Contact Metamorphism Aureole
- 15 Roof Pendants
- 16 Metasomatism • Hydrothermal metamorphism
- 17 Black Smokers
- 18 Geysers and Hot Springs
- 19 Rock Veins
- 20 Burial Metamorphism Associated with very thick sedimentary strata in a subsiding basin
- 21 Subduction Zone Metamorphism
- 22 Pressure-Temperature (P-T) Timepaths
- 23 Regional Metamorphism
- 24 Impact Metamorphism - Occurs when meteorites strike Earth's surface • Product of these impacts are fused fragmented rock plus glass-rich
- 25 Quartz polymorphs help identify impacts
- 26 Shocked Quartz
- 27 Chelyabinsk Meteor (2013)
- 28 Index Minerals - Changes in mineralogy scour from regions of low-grade metamorphism to regions of high-grade metamorphism - Index minerals are good indicators of metamorphic environments
