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IV.—On the Unconformability of the Keuper and Bunter

Published online by Cambridge University Press:  01 May 2009

E. Wilson
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Extract

The following instance of the unconformability of the Keuper and Bunter divisions of the Trias, which came under my notice during the construction of the Great Northern Derbyshire Extension line in the year 1877, is deserving of notice, not only from its decided rarity, but also from its exceptional clearness.

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 7 , July 1880 , pp. 308 - 310
Copyright
Copyright © Cambridge University Press 1880

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References

1 Hull, Geology of the Country around Wigan, Mem. Geol. Surv. p. 31. Triassic and Permian Rocks, p. 87.

2 This interesting section is within an hour's walk of either Breadsall or West Hallam Stations on the Great Northern Railway.

3 The dips in the section do not correspond with those here given, because the section is not taken along the true line of dip.

4 It was the fancied textural resemblance of these red rocks of the Lower Bunter Sandstone and Coal-measures to Rothliegende, which appears to have led the Government surveyors to club them together and map them as Permian Lower Red Sandstone. At Dale Mill a similar mistake was made with characteristic massively-bedded Coal-measure sandstone.