1. GLG 101 - Physical Geology Bob Leighty Metamorphic Rocks

2. These lecture notes are very similar to the ones I use in my traditional classes. You’ll find they are loaded with imagery and streamlined text that highlight the most essential terms and concepts. The notes provide a framework for learning and, by themselves, are not meant to be a comprehensive source of information. To take advantage of the global knowledge base known as the Internet, I have included numerous hyperlinks to external web sites (like the Wikipedia, USGS, NASA, etc.). Follow the links and scan them for relevant info. The information from linked web sites is meant to supplement and reinforce the lecture notes – you won’t be responsible for knowing everything contained in them. As a distance learning student, you need to explore and understand the content more independently than in a traditional class. As always, I will help guide you through this learning adventure. Remember, email Dr. Bob if you have any questions about today’s lecture (rleighty@mail.mc.maricopa.edu).rleighty@mail.mc.maricopa.edu Leave no questions behind! Explore and have fun! These notes and web links are your primary “lecture” content in this class. Additionally, various articles are assigned each week to supplement this “lecture” information. I believe you’ll have enough information to reference without having to purchase a costly textbook.

4. Texture  Layered vs. non-layered arrangement of crystals Classifying Metamorphic Rocks Metamorphic Rocks

5. Texture Classifying Metamorphic Rocks Non-foliated  Random arrangement of crystals marble quartzite  Form by either contact metamorphism or regional metamorphismcontact metamorphismregional metamorphism Metamorphic Rocks

6. Texture Classifying Metamorphic Rocks Foliated  Layered arrangement of crystals (foliation)foliation  Form by regional metamorphismregional metamorphism slate phyllite schist gneiss increasing P & T (MM grade) mudstone (original rock) Metamorphic Rocks

7. myloniteTexture Classifying Metamorphic Rocks Foliated Metamorphic Rocks  Formed by cataclastic metamorphismcataclastic metamorphism

8. Parent Compositions  If not, it can be inferred from index mineralsindex minerals  The parent (original) composition may or may not be obvious Parent rock Metamorphic Rocks

9. Parent rock (protolith)Nonfoliated MM rock sandstone quartzite limestone marble Name That Protolith Contact OR Regional Parent Compositions Metamorphic Rocks

10. Parent rock (protolith)Foliated MM rock gneiss schist mudstone granite Regional Name That Protolith Regional OR Parent Compositions Metamorphic Rocks

11. Metamorphic Rocks of Arizona Squaw Peak (Phoenix, AZ) Metamorphic Rocks

12. Metamorphic Rocks of Arizona South Mountain & Sierra Estrella (Phoenix, AZ) Metamorphic Rocks

13. Metamorphic Rocks of Arizona Mazatzal Mountains (central Arizona) Metamorphic Rocks

14. Metamorphic Rocks of Arizona Bradshaw Mountains (central Arizona) Metamorphic Rocks

15. Metamorphic Rocks of Arizona Inner Gorge of the Grand Canyon Metamorphic Rocks

16. Metamorphic Rocks of the USA New England Metamorphic Rocks

17. Metamorphic Rocks of the World The Alps (Europe) Metamorphic Rocks

18. WWW Links in this Lecture > Metamorphic rock - http://en.wikipedia.org/wiki/Metamorphic_rockhttp://en.wikipedia.org/wiki/Metamorphic_rock > Contact metamorphism - http://en.wikipedia.org/wiki/Metamorphism#Contact_.28Thermal.29_metamorphism http://en.wikipedia.org/wiki/Metamorphism#Contact_.28Thermal.29_metamorphism > Regional metamorphism - http://en.wikipedia.org/wiki/Metamorphism#Regional_metamorphismhttp://en.wikipedia.org/wiki/Metamorphism#Regional_metamorphism > Quartzite - http://en.wikipedia.org/wiki/Quartzitehttp://en.wikipedia.org/wiki/Quartzite > Marble - http://en.wikipedia.org/wiki/Marblehttp://en.wikipedia.org/wiki/Marble > Foliation - http://en.wikipedia.org/wiki/Foliation_%28geology%29http://en.wikipedia.org/wiki/Foliation_%28geology%29 > Slate - http://en.wikipedia.org/wiki/Slatehttp://en.wikipedia.org/wiki/Slate > Phyllite - http://en.wikipedia.org/wiki/Phyllitehttp://en.wikipedia.org/wiki/Phyllite > Schist - http://en.wikipedia.org/wiki/Schisthttp://en.wikipedia.org/wiki/Schist > Gneiss - http://en.wikipedia.org/wiki/Gneisshttp://en.wikipedia.org/wiki/Gneiss > Cataclastic metamorphism - http://en.wikipedia.org/wiki/Metamorphism#Dynamic_metamorphism http://en.wikipedia.org/wiki/Metamorphism#Dynamic_metamorphism > Mylonite - http://en.wikipedia.org/wiki/Mylonitehttp://en.wikipedia.org/wiki/Mylonite > Index mineral - http://en.wikipedia.org/wiki/Index_mineralhttp://en.wikipedia.org/wiki/Index_mineralMetamorphicRocks