Igneous Rock

PhysicalGeography.net

Igneous Rocks	Rocks and Soils: K-12 TLC Guide. Cascades Volcano Observatory. The Franklin Institute Online: Georgia Perimeter College. History of the Earth, University of Kansas. Igneous and Metamorphic Rocks, University of California, San Diego. Igneous Properties and Igneous Rocks, Geologylink. Igneous Rocks Tour, California State University, Long Beach. James Madison University: Alphabetical List of Igneous Rocks. An Introduction to Igneous Rocks. Igneous Rock Classification. Igneous Rock Formation and Distribution. Minerals and Igneous Rocks, Eastern Washington University. National Park Service. PhysicalGeography.net. University of Kentucky. University of North Carolina. University of Oregon. University of Saskatchewan. U.S. Geological Survey. Wikipedia.
Igneous Rocks Extrusive	California State University, Long Beach. UCAR, University of Michigan. University of British Columbia. University of North Carolina. Basalt: California State University, Long Beach. James Madison University. Obsidian: The Franklin Institute Online. James Madison University. U.S. Geological Survey. Pumice: The Franklin Institute Online. James Madison University. U.S. Geological Survey.
Igneous Rocks Intrusive	California State University, Long Beach: Intrusions. UCAR, University of Michigan. University of North Carolina. University of Pittsburgh. Diorite: California State University, Long Beach. Indiana University-Purdue University, Fort Wayne. James Madison University. Wikipedia. Gabbro: California State University, Long Beach. Indiana University-Purdue University, Fort Wayne. James Madison University. Granite: California State University, Long Beach. The Franklin Institute Online.

This guide last edited 04/27/2007
This guide last revised 09/08/2008
This guide created 10/17/2005