Unformatted text preview: Brittle quartz and ductile micas are found in the Appalachian mountains 5. The Cambrian Period was believed to be a sub categorical period of the Paleozoic era, which was a sub category itself of the Phanerzoic eon, thus indicating that this is a trick question....
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This note was uploaded on 04/13/2010 for the course GEO 101 taught by Professor Kendall during the Spring '08 term at Clemson.
- Spring '08