This book provides a geologic overview of the northwest United States from an indefinite north boundary in Canada south to California and from the coast into mountainous Montana and Wyoming. It follows a strict geologic timeline from the Precambrian into the Pleistocene. A good chart is provided to help the non-geologist keep these periods straight. Most of the major landform events are included and put into understandable language to help someone understand where the mountain they are standing on came from and what processes contribute to hits nature and structure. There is a lot of ground and time to cover so things are kept pretty simple in this nice overview.
From the Back Cover
In Geology, time is everything. And given enough time, almost anything can happen. Northwest Exposures traverses the region through geologic time, chronicling the events that have shaped the rocks and landforms.
The tale begins more than two billion years ago when an ancient continent split; creating oceanfront property in what is now western Idaho. Pacific islands mashed into that coastline, making large parts of Washington and Oregon. These events were followed by monstrous volcanic eruptions, catastrophic ice age floods, and mountains rising to an accompaniment of earthquakes. Written in engaging prose and generously illustrated, Northwest Exposures is a must-read for anyone interested in the geologic history records in the landscape.
Product DetailsPaperback: 443 pages
Publisher: Mountain Press Publishing Company (October 1, 1995)
Product Dimensions: 9 x 6 x 1.1 inches
Shipping Weight: 1.8 pounds
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