Roadside Geology of Oregon [B0177]

2003 PB printing in excellent condition. Until about 200 million years ago, the western margin of North America lay to the east, along the present Idaho border, and a broad coastal plain spread westward into Oregon. The rest of the state was ocean floor. Then the continent began moving slowly westward away from Europe and the floor of the Pacific Ocean began sliding beneath the western edge. That is what created Oregon, and this book tells how it happened.

From Amazon/GoodReads reviews: "Great book to have as you're driving down the road staring out the window at the rocks on the side of the hill."; "Loved the description of how the current coastline emerged."; "Road trip buddy book. Fun, painless learning as we read short explanations of the geology along the roadside."; ""