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Sutton stone has always been highly regarded: as well as being used in construction throughout the Vale of Glamorgan, it was also shipped over the Bristol Channel to North Devon and North Cornwall, which are both deficient in limestone. A major geological feature of the Upper Carboniferous rocks in south Wales is the south Wales coalfield. The ...
Rocks originating in the Carboniferous Period underlie the uplands of eastern and north Lancashire. Listed in order of succession i.e. lowermost/oldest first, they comprise the various limestones, mudstones, siltstones and sandstones of the Bowland High Group and Trawden Limestone Group, Craven Group, Millstone Grit Group, Pennine Coal Measures Group and Warwickshire Group.
The sequence of both Carboniferous and Triassic rocks is criss-crossed by geological faults generally oriented north–south of NNW-SSE. The most significant is the north–south oriented Boundary Fault which runs west of Widnes, St Helens and Skelmersdale and marks the western edge of the Carboniferous Coal Measures outcrop.
The sea cliffs of the Pembrokeshire coast provide numerous venues for rock climbing, particularly on the Carboniferous Limestone in the south and the igneous rocks of the north coast. Coasteering is a sport which has grown popular around the coast of the National Park in recent years which makes use of the abundant coastal cliffs.
The larger part of the national park is formed in sedimentary rocks from the Carboniferous period (359 - 299 Ma). In stratigraphic sequence i.e. youngest at the top, the sequence consists of: [3] Pennine Coal Measures Group; Millstone Grit Group; Yoredale Group (Asbian - Yeadonian) Stainmore Formation; Alston Formation (inc Gayle Limestone ...
Triassic rocks provided the Radyr stone and also the Quarella stone which was worked at Bridgend. [10] Sutton Stone from South Wales' Jurassic outcrop is a highly regarded limestone freestone that has been used in construction throughout the Vale of Glamorgan, it was also shipped over the Bristol Channel to North Devon and North Cornwall which ...
The Lewisian gneiss, the oldest rocks in Great Britain, date from at least 2.7 billion years ago in the Archaean eon, the Earth itself being about 4.6 billion years old. They are found in the far north west of Scotland and in the Hebrides , with a few small outcrops elsewhere.
The geology of East Sussex is defined by the Weald–Artois anticline, a 60 kilometres (37 mi) wide and 100 kilometres (62 mi) long fold within which caused the arching up of the chalk into a broad dome within the middle Miocene, [1] which has subsequently been eroded to reveal a lower Cretaceous to Upper Jurassic stratigraphy.