With more than 10,000 geysers, hot springs, fumaroles, and mud
pots, as well as cubic mile upon cubic mile of once-incendiary
rhyolite, the landscape of Yellowstone Country vividly displays its
fiery past and present. The region contains 1/5 of the world's
geysers, including the most famous of them all, and is the setting
of some of Earth's most destructive volcanic eruptions. The 19 road
guides in Roadside Geology of Yellowstone Country fully explore
this volcanic pedigree
while also delivering you to sites that have recorded the
region's broadand deep geologic story, which includes exquisitely
preserved, 50-million-year-old petrified trees buried in
conglomerate; mountain-sized blocks of rock that slid more than 50
miles in a massive debris avalanche; the glacially carved craggy
peaks and U-shaped valleys of the Beartooth Mountains and Absaroka
Range; and the Grand
Canyon of the Yellowstone, the excavation of which is
still a mystery.
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