Swallowtree Bay anticline-syncline couplet: detail 2

Saundersfoot to Swallowtree Bay geological structures

Detail view no.2 of the asymmetric anticline-syncline couplet in Lower Coal Measures sandstones and siltstones, just south of Swallowtree Bay.

This is a view of the siltstones and sandstones in the fold axis of the anticline. The southern (left) limb of the fold shows much crumpling and shearing in the weaker, laminated siltstones.

The stronger sandstone beds show a strong fracture fan cleavage perpendicular to the bedding, especially marked on the vertical limb of the fold.

I took this photo for the shapes, textures and colours as well as the geological interest, hence I omitted a scale object. The section shown is about 1 metre in height.

The photo of the entire structure is here: