Angular Unconformities

Anglar unconformities

• Represent a break in time, a period when no sediment was depositied.
• May be result of changing environment or earths movements and erosion
• Occur where rocks above the uncomformity have a different dip/and or strike, to the rocks underneath the plane of unconformity.

How an unconformity forms

• Stage 1: Deposition of beds of rock, with the youngest at the top and oldest at the bottom.
• Stage 2: Beds of rock are tilted by earths movements as a result of compressional forces folding the rocks.
• Stage 3: Erosion of the older…