Smoky mountainLocated in Grand Staircase Escalante National Monument (see http://tinyurl.com/l6zwpew

Smoky mountainLocated in Grand Staircase Escalante National Monument (see http://tinyurl.com/l6zwpew), a non volcanic mountain disgorges smoke and toxic gases into the clean desert air. The cause is a deep coal fire that started millennia ago that releases the toxic fumes that rise through fractures in the Cretaceous sandstones above. The rocks are the relics of the ancient shoreline of the inland sea that cut north America in half during the Mesozoic, recording the oscillations of marine and coastal sediments as it oscillated in size.LozImage credit: David Rankin via EPOD -- source link
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