Geological faults in the Dales


The pages below are under development and will be updated on a regular basis.
All images are from the author's collection unless otherwise indicated.


Deep inside the Gaping Gill Fault:- East Pot with Peter Dalton on the ladder, August 23, 1986.
Note the highly fractured rock higher up and the 'zone of cataclasis', crushed and distorted rock, visible to each side of the ladder.
The general layout of this 'Hole in the GG fault' is shown below.


Some of the more reclusive aspects of our Craven Dales are mentioned elsewhere in these website pages - the Porcellanous Band, the Girvanella Band and the Silurian erratics, not to mention the mysterious and elusive Davidsonina-Cyrtina-Septosa Bands. However, the geological faults and other structural features are often highly prominent and none more so than the renowned, not to say majestic, Craven Faults: the North Craven Fault, the Mid-Craven Fault and the South Craven Fault.

It is these great bedrock displacements that give us our spendid Dales heritage. However there is another, highly secretive, phenomenon, the Wensleydale Granite, which props up the whole of our limestone Dales, the Askrigg Block, from deep within the earth's crust.

First turn to the Craven Faults: below. They are depicted at various points along with parts of the equally important Dent and Feizor Faults.

Then turn to The Wharfedale Faults: below, to look at some of the faults that may be seen in the Wharfedale and Littondale area.

Then there is a section for other faults such as those which contribute to the alignment of some of the major caves and potholes, the Gaping Gill Fault for example. Elsewhere other minor faults come to light, and are still coming to light as these investigations continue.

The Craven Faults

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The Wharfedale Faults

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Faults in other areas

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References

see references at bottom of Geology of Western Penyghent


Any shortcomings in the text are entirely my own.
If you would like to get in touch or add information, there is an email address:
mudinmyhair@btinternet.com

Steve Warren


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