Tuesday, February 21, 2012

California's super volcano


Long Valley caldera GIS database:

'via Blog this'

The massive Long Valley caldera volcano is located about two hours south of where I grew up in Reno, and not far from the famous Mono Lake, Yosemite National Park, and Mammoth Mountain. It's a fascinating place to wander around and see the formations of heat-fused ash and other scars that hint at the enormous scale of an eruption that buried much of the Southwestern US under silicate ash 750,000 years ago.


Welded ash formation from the Long Valley caldera's VEI7-scale eruption. USGS photo, pubic domain, via USGS.



















USGS image, public domain, via Wikipedia 








                     
                                                             


Bishop (Long Valley caldera) and Yellowstone ashbeds, USGS public domain image, via USGS
                  
                                                                   


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