It’s below the magma chamber they knew about before and contains enough hot, partly molten rock to fill the Grand Canyon 11 times over.
[EarthSky] University of Utah seismologists have discovered a reservoir of hot,
partly molten rock 12 to 28 miles beneath the Yellowstone supervolcano
that is 4.4 times larger than the shallower, long-known magma chamber.
Yellowstone is among the world’s largest supervolcanoes, with
frequent earthquakes and Earth’s most vigorous continental geothermal
What do you know about the Yellowstone supervolcano?
The hot rock in the newly-discovered, deeper magma reservoir would
fill the 1,000-cubic-mile Grand Canyon 11.2 times, while the previously
known magma chamber would fill the Grand Canyon 2.5 times, says
postdoctoral researcher Jamie Farrell, a co-author of the study
published online April 23, 2015 in the journal Science.
The researchers emphasize that Yellowstone’s plumbing system is no
larger – nor closer to erupting – than before, only that they now have
used advanced techniques to make a complete image of the system that
carries hot and partly molten rock upward from the top of the
Yellowstone hotspot plume – about 40 miles beneath the surface – to the
magma reservoir and the magma chamber above it. Read More