Earthwatcher's photos with the keyword: Middle Shale Group

Marros Sands to Amroth Just east of Amroth, we cross the county boundary into Carmarthenshire. The fine beach of Marros Sands, some 4 km east of Amroth is relatively isolated between Telpyn Point and Ragwen Point. There is no road access; the only way to get here is along the coastal paths, along the beach at lowest tide, or by boat. At the western end of Marros Sands the Teague's Wood valley cuts down to the beach. The valley centre is filled with solifluction deposits ('Head') formed by freeze-thaw cycles of permafrost melting and refreezing at the end of the last glacial period (Devensian). This is a closer view of the cryogenic anticlinal fold in the shales of the Bishopton Mudstone Formation The fold is probably due to valley bulging during melting of the permafrost. The fold is quite superficial and probably does not extend more than a few metres into the sub-surface. Overlying the shales are angular, frost-shattered, shale fragments, possibly with some upward pointing ice-wedging structures. This is overlain in turn by a paler, angular, solifluction 'Head' and modern river alluvium, mostly sand with rounded pebbles and cobbles. See notes. The walking stick is approx. 90 cm long

Marros Sands to Amroth Just east of Amroth, we cross the county boundary into Carmarthenshire. The fine beach of Marros Sands, some 4 km east of Amroth is relatively isolated between Telpyn Point and Ragwen Point. There is no road access; the only way to get here is along the coastal paths, along the beach at lowest tide, or by boat. At the western end of Marros Sands the Teague's Wood valley cuts down to the beach. The valley centre is filled with solifluction deposits ('Head') formed by freeze-thaw cycles of permafrost melting and refreezing at the end of the last glacial period (Devensian). In the centre is a cryogenic anticlinal fold in the shales of the Bishopton Mudstone Formation The fold is probably due to valley bulging during melting of the permafrost. The fold is quite superficial and probably does not extend more than a few metres into the sub-surface. Overlying the shales are angular, frost-shattered, shale fragments, possibly with some upward pointing ice-wedging structures. This is overlain in turn by a paler, angular, solifluction 'Head' and modern river alluvium, mostly sand with rounded pebbles and cobbles. See notes. The walking stick is approx. 90 cm long.

Marros Sands to Amroth Just east of Amroth, we cross the county boundary into Carmarthenshire. The fine beach of Marros Sands, some 4 km east of Amroth is relatively isolated between Telpyn Point and Ragwen Point. There is no road access; the only way to get here is along the coastal paths, along the beach at lowest tide, or by boat. At the western end of Marros Sands the Teague's Wood valley cuts down to the beach. The valley centre is filled with solifluction deposits ('Head') formed by freeze-thaw cycles of permafrost melting and refreezing at the end of the last glacial period (Devensian).

Marros Sands to Amroth Just east of Amroth, we cross the county boundary into Carmarthenshire. The fine beach of Marros Sands, some 4 km east of Amroth is relatively isolated between Telpyn Point and Ragwen Point. There is no road access; the only way to get here is along the coastal paths, along the beach at lowest tide, or by boat. In this panoramic view, the cliffs to the right of centre are immediately south of Top Castle hill fort and are comprised of shales of the Namurian-age Bishopston Mudstone Formation (Middle Shale Group). Erosion along joint planes has produced a series of scalloped caves and collapses, and remnant low stacks and reefs on the wave-cut platform. To the west (left) the Teague's Wood valley cuts down to the beach, with the headland of Telpyn Point beyond. Structurally, these rocks are almost completely undisturbed, compared with the thrusts and folds encountered just a few miles to the west, between Amroth and Tenby. Panorama constructed from six landscape format photos sticthed together using Photoshop software. Best viewed LARGE on a black background.

Marros Sands to Amroth Just east of Amroth, we cross the county boundary into Carmarthenshire. The fine beach of Marros Sands, some 4 km east of Amroth is relatively isolated between Telpyn Point and Ragwen Point. There is no road access; the only way to get here is along the coastal paths, along the beach at lowest tide, or by boat. The cliffs immediately south of Top Castle hill fort are comprised of shales of the Namurian-age Bishopston Mudstone Formation (Middle Shale Group). Erosion along joint planes has produced a series of scalloped caves and collapses, and remnant low stacks and reefs on the wave-cut platform. Structurally, these rocks are almost completely undisturbed, compared with the thrusts and folds encountered just a few miles to the west, between Amroth and Tenby.