Pakistan's Earthquake Island

Geologists think that the new island is made of erupted mud, spewed from the seafloor when either trapped gases escaped or subsurface water was expelled. They think that the new island could be a mud volcano. Mud volcanoes form when hot water underground mixes with sediments and gases such as methane and carbon dioxide. If the noxious slurry finds a release valve, such as a crack opened by earthquake shaking, a mud volcano.