Word: magma
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...double eruption produced none of the spectacular lava displays that characterize such perennially active volcanoes as Hawaii's Kilauea. Instead, the superheated magma within Nevado del Ruiz began to melt the thick blanket of snow and ice that caps the top 2,000 ft. of the peak. Filthy water started to flow down the sides of the mountain. The trickle swiftly turned into a torrent of viscous mud, stones, ashes and debris with a crest of 15 ft. to 50 ft. The liquid avalanche, known as a lahar, was soon hurtling down the steep slopes at speeds...
...fictional film speculated on what might happen if the magma dome underneath Yellowstone National Park, which actually exists, were to explode...
...when the swelling magma chamber prepared to blow, the humor quickly subsided. And the audience turned quiet as a modest eruption turned into a worldwide catastrophe...
...else?--Aliens of the Deep. This one's a documentary, shot in IMAX 3-D. It's his cinematic take on the emerging science of astrobiology, the search for life in other worlds. Paradoxically, astrobiologists are equally fascinated with outer space and the ocean depths, where water superheated by magma from the Earth's crust spews from cracks called hydrothermal vents and sustains a bizarre menagerie of bacteria and other aquatic life...
...Magma fuels??a string of volcanoes in the Cascade Range, including Mount St. Helens...