Cerro Azul is an active stratovolcano in the Maule Region of central Chile, immediately south of Descabezado Grande. Part of the South Volcanic Zone of the Andes, it rises 3,788 meters (12,428 ft) and is capped by a summit crater 500 meters (1,600 ft) wide that opens to the north. Cerro Azul is responsible for South America's largest recorded eruptions, in 1846 and 1932. In 1846, an effusive eruption formed the vent at the site of present-day Quizapu Crater on the northern flank of Cerro Azul and sent lava flowing down the sides of the volcano, creating a lava field of 8–9 square kilometers (3–3.5 square miles). In 1932, one of the largest explosive eruptions of the 20th century occurred at Quizapu Crater and sent 9.5 cubic kilometers (2.3 cu mi) of ash into the atmosphere. The volcano's most recent eruption was in 1967. The South Volcanic Zone has a long history of eruptions and poses a threat to the surrounding region. Any volcanic hazard—ranging from minor ashfalls to pyroclastic flows—could pose a significant risk to humans and wildlife. Despite its current inactivity, Cerro Azul could produce another major eruption. (Cerro Azul (Chile volcano)
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_______________________________ Today's selected anniversaries:
1593:
Ottoman forces were crushingly defeated by the Habsburgs at Sisak (now in Croatia), triggering the Long War. http://en.wikipedia.org/wiki/Battle_of_Sisak
1633:
Galileo Galilei was forced to recant his heliocentric view of the Solar System by the Roman Inquisition. http://en.wikipedia.org/wiki/Galileo_affair
1813:
War of 1812: After learning of American plans for a forthcoming surprise attack, Canadian Laura Secord set out on a 30 km (19 mi) journey from Queenston, Ontario, on foot to warn Lieutenant James FitzGibbon . http://en.wikipedia.org/wiki/Laura_Secord
1944:
World War II: The Soviet Union began its operation to expel German forces from the Belorussian SSR and eastern Poland. http://en.wikipedia.org/wiki/Operation_Bagration
1978:
Working at the U.S. Naval Observatory, American astronomer James W. Christy discovered Charon, then considered the sole moon of Pluto. http://en.wikipedia.org/wiki/Charon_%28moon%29
2009:
Two Metro trains in Washington, D.C., collided, killing nine people and injuring 80 others. http://en.wikipedia.org/wiki/June_2009_Washington_Metro_train_collision
_____________________________ Wiktionary's word of the day:
mezuzah (n): (Judaism) A piece of parchment inscribed with Pentateuchal texts and attached in a case to the doorpost of a house http://en.wiktionary.org/wiki/mezuzah
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