Earthwatcher's photos with the keyword: Ladies Cave Anticline

Just south of Saundersfoot, Pembrokeshire. Scanned from a 35mm transparency, taken with a Zenit 'E' camera.

This splendid chevron fold in Coal Measures sandstones and siltstones is just south of Saundersfoot harbour and is easily reached by walking along the beach at mid- to low tide. A classic geological locality!

Saundersfoot to Swallowtree Bay geological structures The Ladies Cave Anticline is a well-known and much visited structure in Lower Coal Measures rocks, just south of Saundersfoot harbour. This is a photo of the hinge zone in the 'cave', developed in the hinge zone of the fold. The weaker mudstones have 'flowed' up into the thickened fold hinge to form saddle structures. There are also small scale thrusts, marked by disruption of the brown ironstone layers. The horizontal ridges on the underside of the steep northern limb probably indicate development of a fan cleavage, although it does not appear to be present on the opposite limb. The main anticline photo is here:

Saundersfoot to Swallowtree Bay geological structures The Ladies Cave Anticline is a well-known and much visited structure in Lower Coal Measures rocks just south of Saundersfoot harbour. This is a fine example of a chevron fold, often developed in alternating layers of stronger and weaker rocks. The fold is asymmetric; the axis dips steeply to the south (left). Accommodation structures as a result of the 'space problem' include thinning of the fold limbs in the weaker mudstones layers, 'flowing' up into the thickened fold hinge to form saddle structures. There are also small scale thrusts in the hinge zone: Earlier photos here (September 2010) and here (February 1993)