Earth: Portrait of a Planet
Stephen Marshakis Professor of Geology and Head of the Department of Geology at the University of Illinois, Urbana-Champaign. He holds a Ph.D. from Columbia University, an M.S. from the University of Arizona, and a B.A. from Cornell University. He has served as Chair of the Division of Structural Geology and Tectonics of the Geological Society of America. Dr. Marshak has written numerous research articles on topics in structural geology and tectonics, and has authored or co-authored four books:Basic Methods of Structural Geology; Earth Structure, Earth: Portrait of a Planet; andEssentials of Geology.