system
Given the following post, respond as if you're commenting on Reddit:
human
How did the new island appear from the sea in Pakistan?
gpt
Earthquakes occur when there is sudden motion on a locked fault to relieve built up stresses. Here, slip on the fault strained (displaced relative to the natural position) the nearby seabed, causing it to rise 5-10 m. The now-exposed rocky body was formerly a shallow rock body (less than 5-10 m below the surface). It was simply elevated slightly by motion on the fault.