NO6541 : Angular Unconformity

taken 3 years ago, near to Seaton, Angus, Great Britain

Angular Unconformity
Angular Unconformity
Whiting Ness is of considerable geological significance. It is made up of Old Red Sandstone, also called Devonian Sandstone; the smooth sandstone of the lower part of the cliff is Lower Old Red Sandstone, while the rough upper part is Upper Old Red Sandstone. The important detail is that the whole of the Middle Devonian, or Middle Old Red Sandstone, is entirely missing, so there is a gap of tens of millions of years in age between the two parts of the cliff. A gap like this in the geological record is called an unconformity. If the two units of rock dip at different angles, it is termed an angular unconformity, and Whiting Ness is an good exapmle of such a feature. You can easily trace the line marking the contact between the older and younger sandstones in this view.
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NO6541, 49 images   (more nearby )
Photographer
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Date Taken
Monday, 18 August, 2014   (more nearby)
Submitted
Monday, 25 August, 2014
Geographical Context
Geological interest 
Subject Location
OSGB36: geotagged! NO 6591 4107 [10m precision]
WGS84: 56:33.6211N 2:33.3745W
Camera Location
OSGB36: geotagged! NO 6590 4104
View Direction
North-northeast (about 22 degrees)
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Image classification(about): Geograph
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