NS4480 : Cornstone outcrop

taken 9 years ago, 3 km from Blairquhomrie, West Dunbartonshire, Great Britain

Cornstone outcrop
Cornstone outcrop
Although I came across this outcrop by chance while crossing the moor, I recognized it as one that had been pictured in an article, by naturalist John Mitchell, on cornstone workings. For more on this article (which had only recently been brought to my attention), and for a description of cornstone, see NS3678 : Former cornstone workings on Carman Muir.

Mitchell notes that most of the surface cornstone in this area had been removed by the turn of the nineteenth century; he then adds, with reference to the particular outcrop shown in this photograph, that "the largest undisturbed remnant by far occurs just to the south-west of the Lang Dyke on Dumbarton Muir. With its water-worn fissures or 'grikes', this untouched exposure illustrates the relative ease with which cornstone could be quarried using only the most basic hand tools such as crowbars and stone hammers".

For another picture, taken on a slightly better day, see: NS4480 : Cornstone outcrop.

The Lang Dyke itself (NS4480 : The Lang Dyke) is distantly visible in the upper left-hand corner of the photo, as a slanting greenish feature slightly darker than its surroundings.
Cornstone outcrop
Cornstone is a form of limestone; in this area, it was formerly burned in kilns to produce lime for agricultural use.
Network of old limestone industry tracks :: NS4379
A very extensive network of ancient tracks on the moors in West Dunbartonshire links old quarries, ruined lime-kilns, and other sites connected with the local limestone-burning industry, which flourished in the 18th century. See LinkExternal link for a Geograph article about the network, and LinkExternal link for an annotated satellite view of it.
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NS4480, 16 images   (more nearby )
Photographer
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Date Taken
Friday, 13 March, 2009   (more nearby)
Submitted
Saturday, 14 March, 2009
Geographical Context
Geological interest 
Category
Rock outcrops   (more nearby)
Subject Location
OSGB36: geotagged! NS 4403 8036 [10m precision]
WGS84: 55:59.4463N 4:30.1209W
Camera Location
OSGB36: geotagged! NS 4402 8036
View Direction
EAST (about 90 degrees)
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Limestone  Cornstone 

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