Sandstone sills serve as a reminder that sedimentary processes are not always passive. Through the forces of fluidization and injection, soft sand can behave like an intrusive liquid, creating complex subsurface structures. These features provide vital clues regarding the dynamic history of sedimentary basins, past seismic events, and the potential for subsurface resource accumulation.
Sandstone sills are a type of clastic injectite. They form under specific geological conditions where fluid pressure exceeds the weight of the overlying rock. sandstone sills