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Tectonic ripples and associated minor structures in the Silurian rocks of Denbighshire, North Wales

Published online by Cambridge University Press:  01 May 2009

P. T. Warren ,
R. K. Harrison ,
H. E. Wilson ,
E. G. Smith  and
M. J. C. Nutt
P. T. Warren
Affiliation:
Institute of Geological Sciences, Leeds, 15
R. K. Harrison
Affiliation:
Institute of Geological Sciences, Leeds, 15
H. E. Wilson
Affiliation:
Institute of Geological Sciences, Leeds, 15
E. G. Smith
Affiliation:
Institute of Geological Sciences, Leeds, 15
M. J. C. Nutt
Affiliation:
Institute of Geological Sciences, Leeds, 15
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Summary

Structures affecting certain bedding planes, and simulating sedimentary ripples, have been found at a number of horizons in the Wenlock and Ludlow rocks of Denbighshire, North Wales. The megascopic appearance of the ripples, including their association with linear structures and their miscroscopical fabric are described in detail; and it is concluded that they are of tectonic origin, being manifestations of bedding-plane slip. The orientations of the ripples and other minor structures suggest that the stress responsible was the regional stress that produced folding, faulting and cleavage.

Type
Articles
Information
Geological Magazine , Volume 107 , Issue 1 , January 1970 , pp. 51 - 60
Copyright
Copyright © Cambridge University Press 1970

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References

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