Stephen J ReynoldsStephen J. Reynolds received an undergraduate geology degree from the University of Texas at El Paso, and MS and PhD degrees in structure/tectonics and regional geology from the University of Arizona. He then spent ten years directing the geologic frmework and mapping program of the Arizona Geological Survey, where he completed the 1988 Geologic Map of Arizona. Steve is a President's Professor-Emeritus in the School of Earth and Space Exploration at Arizona State University. He has authored or edited over 200 geologic maps, articles, and reports, including the 866-page Geologic Evolution of Arizona. He coauthored a widely used structural geology textbook, and he and Julia Johnson authored three introductory college textbooks for McGraw-Hill Education, including the award-winning Exploring Geology. His geologic research focuses on structure, tectonics, and mineral deposits of the Southwest. He leads geologic field trips in Arizona, including to Sedona, Monument Valley, mountains near Phoenix, and the Grand Canyon. Read More Read Less