what causes the rock layers to mountains to form zigzag shape]
The zigzag shape of rock layers in mountains is primarily caused by tectonic forces and the process of deformation.
When tectonic plates collide or undergo compression, the rocks in the Earth's crust are subjected to intense pressure and forces. These forces can cause the rocks to fold, buckle, and fracture.
The zigzag shape of mountain ranges is typically a result of the folding process, specifically a type of fold called a zigzag fold or chevron fold. This type of fold occurs when rocks are subjected to compression from multiple directions, causing them to fold back and forth in a zigzag pattern.
The rocks can also be broken or fractured along faults, which are planes of weakness in the Earth's crust. These fractures can create jagged or zigzag patterns in the rock layers.
Additionally, erosion and weathering can contribute to the zigzag shape of mountain ranges over time. As water, wind, and other erosive forces wear away at the rocks, they can further shape and reveal the layered structure in a zigzag pattern.