Welcome to GLG101C Introduction to Geology
Fall 2004
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:

  1. Texture
  2. Mineralogy
  3. Chemical composition

Textures: - size, shape, relationship of minerals

Mineralogy

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.

Rock Cycle



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©2004, James A. Tyburczy, Department of Geology, Arizona State University
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Last update 9/8/2004