Sedimentary rock layers and texture

Details from a large block of rock in a Calgary park.

 

This is a coarse-grained sandstone, with horizontal bedding (layering) across the middle of the photo, and subtle cross-bedding (foreset laminae: layers sloping down to the right) in the upper and lower parts of the photo. In the left half of the photo, near-vertical fracture planes are well defined.

 

C. J.R. Devaney

Done