Basic Kinds of Rocks
I. Definition
II. Rock Classification
    A. Sedimentary Rocks
        1. Definition
        2. Origin
            a) Clastic
            b) Chemically Precipitated
            c) Organic
        3. Appearance
    B. Igneous Rocks
        1. Definition
            a) Intrusive
            b) Extrusive
        2. Plutons
        3. Appearance
        4. Chemical Composition
        5. Examples
    C. Metamorphic rocks
        1. Definition
        2. Means of Production
        3. Appearance
        4. Examples
III. The Rock Cycle