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Featured article Interior of Incapillo Incapillo is a Pleistocene-age caldera – a depression formed by the collapse of a volcano – in La Rioja Province, Argentina. It is part of the southernmost volcanic centre in the Andean Central Volcanic Zone (CVZ). Subduction of the Nazca Plate beneath the South American Plate is responsible for most of the volcanism in the CVZ. Volcanism commenced in the Incapillo region 6.5 million years ago, forming the high volcanic edifices of Monte Pissis, Cerro Bonete Chico and Sierra de Veladero. Incapillo is known to have erupted the Incapillo ignimbrite 0.52 ± 0.03 and 0.51 ± 0.04 million years ago; this has a total volume of about 20.4 cubic kilometres (4.9 cu mi). A caldera with dimensions of 5 by 6 kilometres (3.1 mi × 3.7 mi) formed during the eruptions. Later volcanism generated more lava domes within the caldera and a debris flow in the Sierra de Veladero. The lake within the caldera may overlie an area of ongoing hydrothermal activity. (Full article...) Recently featured: Ronald Reagan Marasmius rotula The Ecstatic Zimmerman Telegram Zimmerman Telegram On February 24, .. 1582 - Pope Gregory XIII announced the Gregorian calendar. 1803 - Marbury v. Madison established judicial review in the U.S. 1917 - The Zimmermann Telegram was delivered, complicating World War I. 1999 - Arizona executed German national Karl LaGrand. Recent days: February 23 - February 22 More events in history... Did you know ...? ZX Spectrum ... that the ZX Spectrum (pictured) is one of the best-selling British computers of all time? ... that Kenneth Odumegwu had never appeared in an organized American football game prior to playing in the NFL? ... that the Doctor Who episode "The Devil's Chord" references the events of an episode that aired more than sixty years before? ... that Rachel Brem discovered a tumor in her own breast while testing ultrasound equipment for her hospital? ... that for her residency Ang Ating Musika, Regine Velasquez performed "two concerts-in-one"? ... that Bianca Babb, a pioneer girl captured by Comanches, described her time among them as "every day seemed to be a holiday", despite the hardships of her initial capture? ... that the two marble statues flanking the Dellwood Cemetery gates represent Mourning and Resurrection? ... that before becoming a comedian, Ola Labib was a pharmacist who had never been inside a pub before her first gig? ... that the idea for Windswept Adan came to Ichiko Aoba after she noticed the translucency of a sea grape?	In the news Saulos Chilima A plane crash in Mzimba, Malawi, kills ten people, including Vice President Saulos Chilima (pictured). In the Indian general election, the National Democratic Alliance, led by Prime Minister Narendra Modi, is re-elected with a reduced majority. The Boeing Starliner spacecraft conducts its first crewed flight, carrying two astronauts to the International Space Station. The CNSA Chang'e 6 completes sampling and takeoff from the far side of the Moon. Ongoing: Israel–Hamas war timeline Russian invasion of Ukraine timeline Sudanese civil war timeline Recent deaths: Simon M. Cowell James Lawson Brother Marquis Chet Walker William Anders Jürgen Moltmann Holidays {{Holidays}} Obituaries Italian cyclist Marco Pantani died suddenly at a hotel in Rimini, Italy on February 14. Former Chechen president Zelimkhan Yandarbiyev was killed in an apparent car bomb explosion on February 13. Former leader of the Canadian liberal party, Claude Ryan, died from stomach cancer on February 9 at age 79. More recent deaths...
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