Marli Miller is a senior instructor and researcher in the Department of Earth Sciences at the University of Oregon, where she’s been since 1997. Most recently, she and coauthor Darrel Cowan completed a complete rewrite of the book Roadside Geology of Washington; before that she rewrote Roadside Geology of Oregon, (both published by Mountain Press in Missoula). She earned her M.S. and Ph.D. in geology at the University of Washington in 1987 and 1992 respectively and a B.A. in geology at Colorado College in 1982.
The Blue Mountains, perhaps the most geologically diverse part of Oregon, consist of a series of mountain ranges, rolling uplands, and valleys in the northeastern part of the state and extending into southeastern Washington. Slightly less than a sixth of Oregon's land area, the region occupies about 15,000 square miles. …