Pockmark (geology)

In geology, a pockmark is a depression or crater-like feature found on the seafloor or on land, typically caused by the release of gas or fluid from below the surface. These features are often associated with sedimentary environments and can result from various geological processes, including the escape of methane gas, which leads to erosion and the formation of these depressions. Pockmarks can vary in size and shape but generally appear as bowl-shaped or funnel-like depressions.