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Old Red Sandstone
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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, Ireland and Norway, and in the west alo
Folded Old Red Sandstone rock formation at St Ann's Head in Pembrokeshire, Wales
Folded Old Red Sandstone rock formation at St Ann's Head in Pembrokeshire, Wales
Hutton's angular unconformity at Siccar Point where 370-million-year-old Devonian Old Red Sandstone overlies 435-million-year-old Silurian greywacke
Hutton's angular unconformity at Siccar Point where 370-million-year-old Devonian Old Red Sandstone overlies 435-million-year-old Silurian greywacke
Bedding plane of Old Red Sandstone with quartz and chert pebbles, central England; scale bar is 10 mm.
Bedding plane of Old Red Sandstone with quartz and chert pebbles, central England; scale bar is 10 mm.
Old Red Sandstone at Gardenstown, Aberdeenshire
Old Red Sandstone at Gardenstown, Aberdeenshire
Hutton's Unconformity
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Hutton's Unconformity is a name given to various notable geological sites in Scotland identified by the 18th-century Scottish geologist James Hutton as places where the junction between two types of r
Old Red Sandstone
…occupies a narrow zone from Dulas Bay on Anglesey's northeast coast, southwards to the town of Llangefni. In 1787 James Hutton noted what is now known as Hutton's Unconformity at Inchbonny, Jedburgh, and in early 1788 he set off with John Playfair to the Berwickshire coast and found more examples of this sequence in the valleys…
Cover of the journal Transactions of the Royal Society of Edinburgh. This is the issue where James Hutton published his Theory of the Earth in 1788.
Cover of the journal Transactions of the Royal Society of Edinburgh. This is the issue where James Hutton published his Theory of the Earth in 1788.
Hutton's Glen Tilt exposure at the collapsed Dail-an-eas Bridge upstream from Forest Lodge, drawn by John Clerk of Eldin in 1785; N 56.85109, W 3.7418
Hutton's Glen Tilt exposure at the collapsed Dail-an-eas Bridge upstream from Forest Lodge, drawn by John Clerk of Eldin in 1785; N 56.85109, W 3.74187
Hutton’s First Unconformity at Newton Shore on the Island of Arran; N 55.718072, -5.287987
Hutton’s First Unconformity at Newton Shore on the Island of Arran; N 55.718072, -5.287987
Hutton Unconformity at Inchbonny, Jedburgh. A photograph shows the current scene (2003), below John Clerk, Lord Eldin's illustration of 1787; N 55.472
Hutton Unconformity at Inchbonny, Jedburgh. A photograph shows the current scene (2003), below John Clerk, Lord Eldin's illustration of 1787; N 55.4721, W 2.5545