"A geologic dike is a flat body of rock that cuts through...

"A geologic dike is a flat body of rock that cuts through another type of rock. Dikes cut across the other type of rock at a different angle than the rest of the structure. Dikes are usually visible because they are at a different angle, and usually have different color and texture than the rock surrounding them."

"Dikes Types Based on Occurrence;
Sole Injection: It is a dike that is injected along a thrust fault plane.
Sheeted Dike Complexes: A sheeted dike complex is a series of sub-parallel intrusions of igneous rocks.
Dike Swarms: Dikes can also appear in swarms"