Redoubt volcano, Alaska,
on 4 March 1990


USGS Cascades Volcano Observatory
QUICK ACCESS
SELF TEST
Alphabetical Listing
Bowen's Reaction Series
Classification
Igneous Rock distribution
Composition/Texture Key
Color/Texture Key

OTHER SITES
Minerals
Sedimentary Rx
Metamorphic Rx
Plate Tectonic Primer Wilson Cycle
Tectonic Rock Cycle
Geologic Evolution of the Mid-Atlantic

This material is copyrighted, but may be used by anyone for personal or education purposes as long as the source is acknowledged. For further information, please contact:

Lynn S. Fichter © 2000
(fichtels@jmu.edu)   
Department of Geology and Environmental Science
James Madison University, Harrisonburg, Virginia 22807

JMU Geology home page

College of Science and Mathematics

ORGANIZATION OF THE IGNEOUS ROCK SITE

An Introduction to Igneous Rocks for the Beginner
     A very simple igneous classification - pdf version for printing

Alphabetical Listing of Igneous Rocks - links to pictures/descriptions

Bowen's Reaction Series and Igneous Rock Forming Minerals
     pdf version
     Magma types - ultramafic, mafic, intermediate, felsic

Strategies of Igneous Rock Classification
     Kinds of Classification - home page
           Color-Texture Classification
           Modal (mineral) classification
           Normative (suite) Classification
     Magma types - ultramafic, mafic, intermediate, felsic

Keys to Igneous Rock Identification - home page
     Composition-Texture Key - pdf version
     Color-Texture Key - pdf version
     Igneous Rock Classification: Mineral Percent Abundance Chart
         (with clickable images) - pdf version

Extrusive and Intrusive Igneous Rocks - home page
     Volcanos and Extrusive Igneous Rocks
     Batholiths, sills, dikes, and other Intrusive Igneous Rock bodies
     Igneous rock recognition and identification

Igneous Rock Formation and Distribution

Igneous Rock Evolution - home page
     Phase Diagrams - home page
            Solid Solution Phase Diagram - eg plagioclase feldspars
           Binary Eutectic Phase Diagram - eg the mafic minerals
     Evolution and Distribution

Strategies for Studying -

Self Test - finding out how much you know

LSF Home | Geology Web Sites | Courses | Geology Home
Last Update: 7/14/00

e-mail: (Fichtels@jmu.edu)