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Old Red Sandstone, abbreviated ORS, is an assemblage of rocks in the North Atlantic region largely of Devonian age. It extends in the east across Great Britain, ...
The Emsian age Clee Sandstone Formation overlies the St Maughans rocks around Cleobury Mortimer. In a tract of country to the south of Stottesdon, the Clee Sandstone is overlain by the yellow and sometimes pebbly Farlow Sandstone Formation. Together with the Pridoli strata, these Devonian rocks constitute the Old Red Sandstone of Shropshire. [7]
The exact extent of the Orcadian Basin is uncertain due to later tectonic effects and burial beneath younger sediments, but it is known to have reached from the south coast of the Moray Firth to the Shetland Islands in the north and from Strathy on the Caithness coast in the west, to the Outer Moray Firth and East Shetland Platform in the east, where it is proven by hydrocarbon exploration ...
Sketch geological map of Orkney. The geology of the Orkney islands in northern Scotland is dominated by the Devonian Old Red Sandstone (ORS). In the southwestern part of Mainland, this sequence can be seen to rest unconformably on a Moinian type metamorphic basement.
The Old Red Sandstone was deposited across much of central and southern England. Sea levels varied considerably at this time with the coastline advancing and retreating from north to south across England. The Old Red Sandstone of Devon gave the period its name. [5]
The Old Red Sandstone is a series of red sandstones, marls and conglomerates. It rises as an anticline in the Mendips and appears in the Avon Gorge and at Portishead. Carboniferous Limestone, of marine origin, covers the sandstone and appears in the Avon Gorge and at Weston-super-Mare where it contains volcanic rocks. [37]
The Old Red Sandstone of the Anglo-Welsh Basin comprises a variety of Devonian age sandstones (alongside other rocks unsuitable for building purposes) of different colour and texture which have been widely employed for building locally.
Cosheston Group; Stratigraphic range: Lochkovian to Emsian (): Type: Group: Unit of: Old Red Sandstone Supergroup: Sub-units: New Shipping Formation, Lawrenny Cliff Formation, Mill Bay Formation, Burton Cliff Formation, Llanstadwell Formation