Colorado Plateau Region
http://vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Notes/colorado_plateau_region.html

USGS, Cascades Volcano Observatory


This web site briefly describes the geology of the Colorado Plateau. Topics include metamorphic, igneous, and sedimentary rocks, and Miocene uplift and erosion. Also included are imbedded links that lead to a glossary of terms.

This resource is referenced here:
Subject: Geoscience:Geology
Resource Type: Scientific Resources:Overview/Reference Work
Topics: Time/Earth History, Solid Earth