Yellowstone Explodes Monstrous Plume of Hot Rock A Magma Reservoir of Churning Lava

p> Scientists from the University of Utah – a YVO partner agency – recently presented new research at the Fall meeting of the American Geophysical Union in San Francisco that suggests that the size of the magma body beneath Yellowstone is significantly larger than had been thought. One should not think of Yellowstone's magma reservoir as a big cavern full of churning lava. Rather, the reservoir is distributed throughout a porous, sponge-like body of otherwise solid rock, with the amount of liquid rock (melt) varying from place to place. Because seismic waves slow down when traveling through liquids, seismic tomography can be used to map out these variations.



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