Published by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 306. The meeting of the Twenty-eighth International Geological Congress, during July 1989 in Washington, D.C. with field trips throughout the United States, provides an opportunity to prepare a general guide to the geology of the Cascade Range.

* Explains the geologic natural history of the North Cascades * Appeals to hikers who are fascinated by the region, as well as amateur geologists * Authors are both geologists with the US Geological Survey Composed of everything from volcanic island arcs and deep ocean sediments, to parts of old continents and even pieces of the deep subcrustal mantle of the earth, Washington's North Cascade region is a true geologic mosaic. Here, authors Tabor and Haugerud reveal that the spectacular scenery of these mountains is matched by equally spectacular geology. Beginning with a summary of the geologic history of the North Cascades, the first section also offers the novice a primer on geologic terms and processes. The second section covers more than 150 accessible sites of geologic interest, arranged by reference to the rivers and streams of the range. Many new ideas about the rocks and geologic processes in the North Cascades are introduced, making this a must-read for those studying the region.

"This volume contains guides that geographically focus on the Seattle, Washington, area within the Puget lowland, and also includes descriptions of trips in the Cascade Range and the region east of the Cascades"--

"To discover astonishing rocks and landforms in the Beaver State, all that is required is a good map, a sense of adventure, and Oregon Rocks, a guide to 60 of the most compelling geologic sites in the state. The well-chosen destinations span the state's geologic history from the Triassic marble at Oregon Caves to the 240-year-old lava dome on Mt. Hood. With more active volcanoes than any other state in the Lower Forty-Eight, Oregon boasts towering behemoths, steaming fumaroles, and eroding cinder cones. Geologist Marli Miller will guide you through the ash and lava from recent eruptions to find evidence of older ones, including a supervolcano possibly produced by the Yellowstone hot spot before it tracked east, and lava that flowed all the way to the coast from eruptions near the Oregon-Idaho border. Although residents of eastern and western Oregon may not admit they have anything in common, the barnacled sea stacks near Cannon Beach and Tillamook are composed of the exact same rock as stacked lava flows on the Columbia Plateau. With beautiful photographs and informative figures and maps, this guidebook will unite Oregonians in their pursuit of outdoor exploration, be it rock hounding, peak bagging, beachcombing, or contemplating their place in the long history of the Earth"--