to GLG101C Introduction to Geology
Professor James Tyburczy
|Department of Geological Sciences|
|Chapter 4 Notes|
The Smithsonian Institution has some great images of rocks, minerals and meteorites on the web
Bob's Rock Shop has images and information on rocks and minerals for rockhounds and geology students
CHAPTER 4. ROCKS: RECORDS OF GEOLOGIC PROCESSES
Rock types are defined in terms of:
Textures: - size, shape, relationship of minerals
Igneous rocks - formed from magma
Sedimentary rocks - (uplift, that is, tectonics) - weathering & erosion - sediments - compaction & cementation - lithification
Metamorphic rocks - change of mineralogy, texture, & chemical composition because of exposure to heat and pressure.
©2004, James A. Tyburczy, Department of Geology, Arizona State University
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Last update 9/8/2004