NEW YORK, Nov. 20 (Xinhua) -- An earthquake measuring 6.4 on the Richter scale jolted 10km SSW of Zonda, Argentina at 20:57:43 GMT on Sunday, the U.S. Geological Survey said.
The epicenter, with a depth of 115.79 km, was initially determined to be at 31.6428 degrees south latitude and 68.7645 degrees west longitude.