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|Roadside Geology of Pennsylvania|
|by Bradford B. Van Diver |
From the tightly folded formations in the Appalachians across the broad reaches of horizontal sedimentary layers in the Allegheny Plateau, Pennsylvania's rocks record hundreds of millions of years of geologic history that tell an astounding story.
This book enables the reader to recognize the rocks and understand their meaning. It explains the landscapes of Pennsylvania in terms anyone can understand and enjoy.