Wikipedia:Main Page history/2019 April 12
From today's featured articleAllison Guyot is an undersea volcanic mountain with a flat top in the Mid-Pacific Mountains. West of Hawaii and northeast of the Marshall Islands, it rises 1,500 metres (4,900 ft) above the seafloor to a platform 35 by 70 kilometres (22 mi × 43 mi) wide. It was probably formed by a hotspot before plate tectonics moved it north to its present-day location. Radiometric dating puts the formation of a volcanic island at around 111 to 85 million years ago. The island was eventually buried, forming an atoll-like structure and a carbonate platform. The platform emerged above sea level at some time in the Albian or Turonian ages before eventually drowning about 99 million years ago for unknown reasons; it is possible that the emergence damaged its reefs. After a hiatus lasting until the Paleocene, pelagic sedimentation deposited limestone, ooze and sand, which bear traces of climatic events and ocean currents. (Full article...)
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On this dayApril 12: Yuri's Night; Cosmonautics Day in Russia
George N. Briggs (b. 1796) · Imogen Holst (b. 1907) · Karim Fakhrawi (d. 2011) |
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The 2016 Atlantic hurricane season was the costliest, as well as the first above-average, Atlantic hurricane season in four years. It featured the highest number of deaths since the 2008 season and also yielded the highest number of named storm landfalls on the United States since that year. The season officially began on June 1 and concluded on November 30. The season's first cyclone, Alex, developed on January 12, while the final storm of the season, Otto, ultimately dissipated on November 26. A total of 16 tropical depressions were recorded, of which 15 further intensified into tropical storms. Of those 15, a total of seven strengthened into hurricanes, while four attained their peaks as major hurricanes. In late September and early October, Hurricane Matthew (pictured) wrought destruction throughout the Caribbean Sea and the Southeastern United States, resulting in $15.09 billion (2016 USD) in damage and 603 deaths; it remains the ninth-costliest hurricane on record in the Atlantic, as well as the tenth-costliest in the United States. (Full list...)
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The French franc is a former currency of France and Monaco and, alongside the Spanish peseta, a former de facto currency in Andorra. The first franc was a gold coin introduced in 1360, which showed King John II of France on a richly decorated horse, earning it the name franc à cheval. A later coin, showing Charles VII on foot, under a canopy, was named the franc à pied. The decimal franc was established by the French Revolutionary Convention in 1795 as a decimal unit, and became the official currency of France in 1799. France joined the euro in 1999, and the franc was replaced by euro notes and coins in 2002. This picture shows a 20-franc coin, dated 1803. The obverse shows an image of Napoleon. See also: 1807 40-franc coin Coin: Monnaie de Paris, Republic of France; Image: National Numismatic Collection, National Museum of American History
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