GEOL334 (Liberal Arts) $ Petrology 6 hrs. 4 crs. The classification, origin, description and identification of igneous, sedimentary and metamorphic rocks. Students work with hand specimens and outcrops in the field as well as petrographic microscopes and rock thin sections.Preq: GEOL 332.Coreq: GEOL 332. 2.0 lecture, 4.0 lab. Two field trips are required.