posted on May, 17 2013 @ 10:33 PM
I have been thinking along these same lines, most recently with the 3 earthquakes in south eastern Idaho. The third quake was actually in Idaho even
though they listed it as Afton, Wy due to it being the closest town to the quake. These are all in the geologic areas of Lava Hot Springs, Soda
Springs, Blackfoot Lava Field, & China Hat Dome. From what I have read these areas activity are fairly young volcanic fields in geologic time. I
think I’ll go with when.
China Hat Dome: China Hat, a geologically young landmark near Soda Springs in the Blackfoot lava field, stands nearly 1000 feet high and is 1.4 miles
long. It formed during a small rhyolite eruption only about 57,000 years ago, and is the largest of three domes lined up above a buried fissure that
fed magma to the surface. The rhyolite magma was so viscous it couldn't flow away from the vent; it just accumulated in a big pile. Since the
volcanic activity in the Blackfoot lava field was so recent, the area is of considerable interest for geothermal energy. Domes similar to China Hat
are a common type of volcanic landform that are built where small batches of viscous magma erupt.