Roadside Geology of IdahoFew states pack so many different rocks into such a small area as Idaho. The ancient sedimentary formations of northern Idaho, the Idaho batholith in the central part of the state, the continental hot spot track and newly discovered meteorite impact crater of the volcanic Snake River Plain, and the Active faults of the Basin and Range province are all chapters in an exciting geologic story. Both authors know the rocks of Idaho well through many years of active research and they related the story with authority, verve, and their usual style. Roadside Geology of Idaho is a book for laymen to enjoy and for geologists to use. |
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Contents
THE BIG PICTURE | 1 |
Paleozoic Sedimentary Formations | 15 |
limestone travertine 367 | 20 |
Copyright | |
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basalt flows basalt lava flows Basin and Range batholith bedrock Belt formations beneath Boise Bonneville flood Butte caldera central Idaho Challis volcanic rocks Coeur d'Alene Columbia Plateau contain continental crust Creek Cretaceous crystals deep deposits dikes diorite east eastern edge Eocene eroded erosion erupted exposed feet floor Fork formed fractures geologists Glacial Lake Missoula glaciers gneisses gold granite gravel gray highway hills hotspot ice age Idaho batholith Lake Bonneville lava field layers Lemhi Lewiston limestone magma mantle metamorphic rocks miles million years ago million years old mineral mining molten Montana mylonite northern Rocky older Oregon overthrust belt pale Paleozoic Peak Plioc Precambrian Precambrian sedimentary Purcell trench Range faults rhyolite rhyolite ash ridges River Canyon road cuts Rocky Mountains Salmon River schists sedimentary formations sedimentary rocks sediments sheared slabs Snake River Plain stream surface U.S. Geological Survey valleys Yellowstone zone