Portal:Earth sciences/DYK/31

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 * ... that the caldera of the volcano Sollipulli is filled with ice (pictured)?
 * ... that one of the greatest mountain ranges in China is made up of multiple individual tectonic blocks, dividing north and south China?
 * ...that residents of California buy more earthquake insurance than residents of any other U.S. state?
 * ...that Lake Urmia, Iran's largest lake, is too salty to support fish?
 * ...that a large titanosaur nesting ground was recently discovered in Auca Mahuevot, in Patagonia in Argentina, and another colony has reportedly been discovered in Spain?
 * ... that landslides from the 1981 Irian Jaya earthquake destroyed 150 homes and cut off transportation for more than 2,000 people?