Reddit reviews Roadside Geology of Washington (Roadside Geology Series)
We found 2 Reddit comments about Roadside Geology of Washington (Roadside Geology Series). Here are the top ones, ranked by their Reddit score.
10th printing, April 1994 of the 1984 first edtion, a nice, new copy!
Chert is formed as deep ocean sediment which is lithified (compressed into rock by pressure of burial) then it gets uplifted and exposed as part of an accretionary wedge (scrapings off the ocean floor in a subduction zone). And that all happens over millions of years. If your interested in Geology I recommend a Roadside Geology book of your state. Pretty easy to read and helps you understand geologic processes.
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This is an excellent book https://www.amazon.com/Roadside-Geology-Washington/dp/0878421602