Arts, Letters and Science Arts, Letters and Science +21. Physical Geology—The earth, its rocks and minerals, surface and subterranean features, their origin and causes as revealed in land features. Credit not given for both Geology 21 and Geology 5 or 54. Two trips required. Four lectures and one laboratory period a week. A W S (5). Staff 22. Historical Geology—The history of the earth, from its theoretical origin to the present, as interpreted from the rocks and their fossil contents. North America, particularly Utah and the adjacent areas, is emphasized. Two required field trips provide a valuable supplement to class discussion. S (5) Moyle, Peterson 53. Regional Geology—Continuation of Geology 21 or 54 and Geology 22 with emphasis on various regions of the United States, their geological development and correlation. Prerequisite: Geology 21 or 54 and 22. (May not be given) W (4) Staff 54. Introductory Engineering Geology—Geological principles and their application to engineering. Credit not given for both Geology 54 and 5 or 21. It is recommended that chemistry and physics be taken previously or concurrently. Field trips required. Four lectures and one laboratory period a week. W S (5) Staff 61. Mineralogy of Rock Minerals—Fundamentals of crystallography, and the identification and sight recognition of the more important rock minerals by physical and chemical tests. Prerequisites: Geology 21 or 54 and Chemistry 2 or 25, or permission of the instructor. One lecture and two laboratory periods a week. A (3) Neff 62. Mineralogy of Ore Minerals—Identification of important ore minerals. Prerequisite: Geology 61. One lecture and two laboratory periods a week. W (3) Neff 63. Petrology—Sight recognition of rocks and a study of their classification and occurrence. Two lectures and one laboratory period a week. Prerequisite: Geology 61. S (3) Neff 75. Introduction to Oceanography—A study of the physical processes in the oceans, including currents, waves, tides, as well as a study of shoreline and ocean floor features. A (5) Staff 91. Elementary Field Geology—Fundamentals of geology as they are observed in western United States and adjacent areas during a six weeks field trip. (May not be given.) Su (3 or 4) Staff 92. Advanced Field Geology—Fundamentals of geology applied to an interpretation of geological features visited during a six-weeks field trip. Prerequisites: Geology 5, 21, or 54 and 22. (May not be given.) Su (3-4). Staff +105. Geomorphology—Land forms and their origin. S (4). Buss 110. Structural Geology—Structural features of the earth and their origin. Prerequisite: Geology 21 or 54. W (4) Moyle, Pashley 115. Aerial Photo Interpretation—Study of maps and aerial photos in the interpretation of geologic and geographic phenomena. One lecture and two laboratory periods per week. Prerequisite: Geology 110 or consent of instructor. W (3) Moyle, Peterson 120. Stratigraphy and Sedimentation—Origin and interrelationships of important rock units. Prerequisite: Geology 21 or 54 and Geology 22. (Given 1970-71 and alternate years.) S (4) Moyle, Peterson 130. Optical Mineralogy and Petrography—Study of minerals and rocks in thin section. Prerequisite: Geology 63. (Given 1969-70 and alternate years.) W (4) Neff 140. Field Methods—Introduction to measuring, mapping, and recording geologic data. One lecture and three laboratory periods per week. S (4) Pashley 150. Paleontology—Characteristics of important fossil groups and their geologic distribution. Prerequisites: Geology 21 or 54 or Zoology 4. Three lectures and one laboratory period a week. A (4) Moyle, Peterson 162. Mineral Deposits—The geologic principles underlying the origin and occurrence of economic mineral deposits. Prerequisite: Geology 21 or 54. S (5) Neff, Moyle 170. Ground Water—Origin, occurrence, behavior, and use of underground water, with special emphasis on practical applications in Utah. Prerequisite: Geology 21 or 54. (Given 1969- 70 and alternate years.) A (4) Pashley 180. Geology for Teachers—Principles and processes of physical and historical geology and sources of geological information. Particularly for elementary teachers. Credit not given for Geology 180 and Geology 5, 21, or 54. Four lectures and one laboratory period per week. (Given on request) (5). Staff 138 139