Information
Title: Igneous Rocks
Encyclopedia: Wikipedia
21 Nov. 2011
http://en.wikipedia.org/wiki/Igneous_rock
Encyclopedia: Wikipedia
21 Nov. 2011
http://en.wikipedia.org/wiki/Igneous_rock
Pictures
http://keep3.sjfc.edu/students/acn00433/e-port/MSTI260/Virtual%20Learning/Volcanoes/Volcanoes.html