A magnitude 10 earthquake has never been recorded. But in theory it can happen. The biggest earthquake ever recorded was a magnitude 9.5. It occurred in 1960 in Chile, where the Nazca plate subducts under the South American plate. There is no theoretical limit to the magnitude of an earthquake, although it is estimated that an earthquake of magnitude 11 would split the Earth in two.
A magnitude 10 earthquake has never been recorded. But in theory it can happen. The biggest earthquake ever recorded was a magnitude 9.5. It occurred in 1960 in Chile, where the Nazca plate subducts under the South American plate. There is no theoretical limit to the magnitude of an earthquake, although it is estimated that an earthquake of magnitude 11 would split the Earth in two.