by Staff Writers
San Jose, Costa Rica (UPI) Jan 25, 2012
A new vent has opened on one of Costa Rica's active volcanoes, the latest activity following a series of small eruptions beginning in 2010, researchers say.
NASA's Terra satellite captured an image of the new vent, located on the southeastern flank of the Turrialba volcano's West Crater, on Jan. 12, a release from the space agency said.
The Observatorio Vulcanologico y Sismologico de Costa Rica reported the new vent exhibited "a vigorous output of bluish gas at high temperature ... that generated a jet-like sound audible from the visitor lookout."
Turrialba is the eastern-most of Costa Rica's active volcanoes.
The rock at the summit of Turrialba is very weak due to the intense rains of the region and the persistent hydrothermal activity at the summit, seismologists said, allowing new vents to open when pressure from below is high enough to make its way through the weakened rock.
The current eruptions and vent openings are the first substantial activity at Turrialba since the 1860s, researchers said.
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Waiting for Death Valley's Big Bang
New York NY (SPX) Jan 25, 2012
In California's Death Valley, death is looking just a bit closer. Geologists have determined that the half-mile-wide Ubehebe Crater, formed by a prehistoric volcanic explosion, was created far more recently than previously thought-and that conditions for a sequel may exist today. Up to now, geologists were vague on the age of the 600-foot deep crater, which formed when a rising plume of ma ... read more
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