• • Rocks: Describe the major rock types & methods of formation: igneous, sedimentary & metamorphic (with examples of each type). Describe the process of igneous rock formation. What are the differences between intrusive & extrusive igneous rocks? Describe how they form, their characteristics, and give examples of each type. .Sedimentary rocks: clastic or physical (include the process of lithification), chemical sedimentary rocks & hydrocarbon/organic sedimentary rocks (how they are formed, characteristics, examples of each).