A sheet-like body that cuts across rock layers and is produced when magma is injected into a fracture is called a?

A sheet-like body that cuts across rock layers and is produced when magma is injected into a fracture is called a dyke. Dykes are typically vertical or steeply inclined and can vary in thickness. They are formed when magma forces its way through existing rock, solidifying as it cools. This geological feature is important for understanding the history of volcanic activity and the movement of magma within the Earth's crust.