NS3679 : Traces of ancient mud cracks

near to Renton, West Dunbartonshire, Great Britain

Traces of ancient mud cracks
Traces of ancient mud cracks
For context, see NS3679 : Carman Quarry, in which this large stone appears below the centre of the image.

The upper part of the stone, displaying this unusual pattern, measures about 1.3 metres from side to side, and about 1 metre from its lower to its upper end. Its surface here would originally have been smooth, as in the lower left section of the photograph, but some layers have fallen off, exposing a network of ridges.

This rock was formed by the deposition of sand on mud cracks; it has therefore preserved, in the form of a natural cast, the shape of those cracks. A larger and more impressive example can be seen, lying flat, not far away: see NS3678 : Traces of ancient mud cracks.

I have not encountered any reports of these features elsewhere, but they are an interesting geological curiosity.
Carman Quarry :: NS3779
The site was formerly a small hill called Fairy Knowe, but it became a quarry at the end of the nineteenth century; later maps call it Carman Quarry. It has long been disused. As for the Fairy Knowe, the name perhaps alludes to the same superstitions as were associated with Havoc Cave: LinkExternal link
Creative Commons Licence [Some Rights Reserved]   © Copyright Lairich Rig and licensed for reuse under this Creative Commons Licence.
year taken
2011
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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NS3679, 34 images   (more nearby)
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Supplemental image
Date Taken
Thursday, 17 March, 2011   (more nearby)
Submitted
Monday, 4 April, 2011
Geographical Context
Geological interest 
Image Buckets ?
Closeup 
Near (from Tags)
Carman Muir  Carman Hill 
Category
Geological feature   (more nearby)
Subject Location
OSGB36: geotagged! NS 3692 7901 [10m precision]
WGS84: 55:58.5774N 4:36.9030W
Photographer Location
OSGB36: geotagged! NS 3695 7902
View Direction
South-southwest (about 202 degrees)
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