Seismite

The German paleontologist Adolf Seilacher first used the term in 1969[1] to describe earthquake-deformed layers.

Today, the term is applied to both sedimentary layers and soft sediment deformation structures formed by shaking.

This subtle change in usage accommodates structures that may not remain within a layer (i.e., clastic dikes or sand volcanos).

Geologists use seismites, in combination with other evidence, to better understand the earthquake history of an area.

If age and distribution of seismically-generated features can be determined, then recurrence interval and seismic hazard risk can be assessed.