Mount St. Helens' Lava Baffles Scientists (AP)
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In this March 8, 2005 image provided by the U.S. Geological Survey, Mount St. Helens in Washington, spews ash and smoke. For more than a year now, Mount St. Helens has been oozing lava into its crater at the rate of roughly a large dump truck load _ 10 cubic yards _ every three seconds. With the sticky molten rock comes a steady drumfire of small earthquakes.The movement of lava up through the volcano is 'like a sticky piston trying to rise in a rusty cylinder,' USGS geologist Dave Sherrod said Thursday, Dec. 29, 2005. (AP Photo/U.S. Geological Survey)
AP - Roughly every three seconds, the equivalent of a large dump truck load of lava — 10 cubic yards — oozes into the crater of Mount St. Helens, and with the molten rock comes a steady drumfire of small earthquakes. |
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