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WASHINGTON, Jan. 14 (Xinhua) -- An earthquake with a magnitude of 5.1 jolted 101km NE of Calama, Chile at 0157 GMT on Tuesday, the U.S. Geological Survey said. 

The epicenter, with a depth of 114.85 km, was initially determined to be at 21.7514 degrees south latitude and 68.3114 degrees west longitude.