Dr. Rex Cole retired from CMU in May, 2020, as Professor of Geology, Emeritus. He is a third-generation Coloradan and has lived in western Colorado for most of his life. Cole received his AS Degree in Geology from Mesa College, a BS in Geology from Colorado State University, and a PhD in Geology from the University of Utah. He has more than 45 years of post-doctoral experience involving petroleum research and development, synthetic-fuels research, uranium exploration, mineral exploration, project management, and college/university teaching. During his 25 years at CMU and MSC he taught approximately 6,700 undergraduate students. Courses included Geology of Colorado, Physical Geology, Historical Geology, Field Methods, Sedimentology and Stratigraphy, Energy Resources, Mineral Resources, Subsurface Methods, Invertebrate Paleontology, Field Camp, and Senior Seminar. He has also interacted with numerous graduate students, mainly at the University of Colorado, Boulder (via the Williams Fork Consortium), the University of Oklahoma, and New Mexico Tech. His main technical interests include sedimentology, stratigraphy, energy and mineral resources, low-temperature geochemistry, volcanology, and geomorphology. Cole has authored or co-authored numerous geoscience research papers (mostly peer-reviewed), abstracts, book chapters, and field guidebooks. Several co-authored publications received awards from the Rocky Mountain Association of Geologists and the Rocky Mountain Section of AAPG. He is a member of the Geological Society of America (Chair of Rocky Mountain Section in 2005), the Grand Junction Geological Society (past president and honorary life member), and the New Mexico Geological Society. He is also a registered professional geologist in Wyoming. In retirement, Cole continues to do research, interact with CMU students and faculty, conduct field trips, do community outreach, write manuscripts and guidebooks, and consult. Hiking, fishing, kayaking, and skiing are favorite personal activities.