2011

SK4963 : Fissure in the Limestone

taken 13 years ago, near to Pleasley, Derbyshire, England

Fissure in the Limestone
Fissure in the Limestone
The lower magnesian limestone is common in this area, it is dolomitic thus meaning it has lots of the mineral dolomite which contains Magnesium. It formed in the Permian period when Britain was an arid/semi arid land. The Zechstein sea which covered a large area across the North Sea and into Germany was where this limestone formed. It constantly evaporated then refilled leading to evaporite products such as Halite (rock salt which covers our roads) as well as gypsum. It is seen here in an old Great Northern railway cutting.
There are lots of fissures and some faulting (with slikensides). This resulted in problems sinking Pleasley pit due to water ingress through these cracks.
Pleasley Trails :: SK4964

The Pleasley Colliery site is the centre of a major leisure development including landscaping of the former pit spoil heap as an important nature and walking area, and creation of a network of trails largely using former railway alignments. The railways involved were the competing local branches of the Midland and Great Northern Railways. They appear to be typical of the lines which disappeared under the Beeching reforms, but in fact had a very different history. Both lines lost their passenger services early - in 1930 and 1931 respectively, but then remained open to a greater or lesser extent until the end of coal production in the region in the 1980s. The southerly of the two lines (GNR) now supports the Skegby Trail between Pleasley, Skegby and Sutton-in-Ashfield. The northerly (MR) splits to form the relatively short Rowthorne Trail and the longer Teversal Trail which itself links to further old railway trails towards Alfreton and Chesterfield. Interesting, neither the Skegby nor Teversal Trails have formal right-of way status, although the Rowthorne Trail does. The former are mainly in Nottinghamshire, while the latter is in Derbyshire.


Creative Commons Licence [Some Rights Reserved]   © Copyright Ashley Dace and licensed for reuse under this Creative Commons Licence.
Category: Geological feature
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SK4963, 63 images   (more nearby 🔍)
Photographer
Ashley Dace   (more nearby)
Date Taken
Thursday, 24 February, 2011   (more nearby)
Submitted
Friday, 25 February, 2011
Subject Location
OSGB36: geotagged! SK 494 637 [100m precision]
WGS84: 53:10.1037N 1:15.6777W
Camera Location
OSGB36: geotagged! SK 494 637
View Direction
EAST (about 90 degrees)
Clickable map
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Image classification(about): Geograph
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