Unlike igneous sills, which form from the cooling of molten magma, sandstone sills (often referred to as clastic or sedimentary sills) form when unconsolidated, fluidized sediment is forcibly injected into fractures within the Earth's crust.
: Tools like the Fullbore Formation MicroImager are used to detect these structures in the subsurface. sandstone sills
If you tell me more about your specific interest, I can provide more tailored info: (e.g., architectural sandstone window sills) Unlike igneous sills, which form from the cooling