Friday Rocks #18: Pencil Cleavage

Pencil Cleavage is developed through the intersection of cleavage and bedding planes. The fractures form long, skinny pieces of rock.


Friday Rocks #17: Fault Core Shale

This vertically dipping fault shows deformed shales in the core. On the right side of the photo slickenlines on the carbonates are seen. Bedding has been rotated to vertical. The shales are folded and fault by motion on the larger fault.