SH7783 : Craig Rofft Sandstone

taken 4 years ago, near to Llandudno, Conwy, Great Britain

Craig Rofft Sandstone
Craig Rofft Sandstone
Sandstone intervals within the Carboniferous Limestone of the Great Orme are well-known, what is surprising here is the extent of quarrying, which runs for over 100m along the strike of the bed. There is a prominent level which marks where it has been eroded or removed by quarrying, and a wide area of waste heaps. Sandstones within limestone packages are interpreted as responses to lowering sea level, or elevation of terrain so that erosion is enhanced and deposition is closer to the contemporary shoreline. Limestones will only form where sediment is in short supply. The reason for the disturbance is most likely to be continuing movement along the major basement faults in the district.
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SH7783, 183 images   (more nearby )
Photographer
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Date Taken
Thursday, 17 October, 2013   (more nearby)
Submitted
Friday, 18 October, 2013
Geographical Context
Geological interest  Uplands  Grassland  Quarrying, Mining  Derelict, Disused  Rocks, Scree, Cliffs 
Subject Location
OSGB36: geotagged! SH 7759 8319 [10m precision]
WGS84: 53:19.8851N 3:50.3769W
Camera Location
OSGB36: geotagged! SH 7761 8318
View Direction
West-northwest (about 292 degrees)
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Image classification(about): Geograph
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