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Probable orthocone skip and roll marks from the Aberystwyth Grits

Published online by Cambridge University Press:  01 May 2009

D. E. B. Bates
Affiliation:
Geology DepartmentUniversity College of WalesAberystwythWales

Summary

Skip and roll marks, probably the impressions of orthocones, are described from the Aberystwyth Grits (Lower Silurian, mid-Wales).

Type
Articles
Copyright
Copyright © Cambridge University Press 1974

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References

Challinor, J. 1947. A remarkable example of superficial folding due to glacial drag near Aberystwyth. Geol. Mag. 84, 270–2.CrossRefGoogle Scholar
Craig, G. Y. & Walton, E. K. 1962. Sedimentary structures and paleocurrent directions from the Silurian Rocks of Kirkcudbrightshire. Trans. Edin. geol. Soc. 19, 100–19.CrossRefGoogle Scholar
Dzulinski, S. & Sanders, J. E. 1962. Current marks on firm mud bottoms. Trans. Connecticut Acad. Sci. 42, 5796.Google Scholar
Fitches, W. R. 1972. Polyphase deformation structures in the Welsh Caledonides, near Aberystwyth. Geol. Mag. 109, 149–55.CrossRefGoogle Scholar
Kelling, G. & Whitaker, J. H. McD. 1970. Tool marks made by ribbed orthoconic nautiloids. J. Geol. 78, 371–4.CrossRefGoogle Scholar
Moore, R. C. (Ed.) 1964. Treatise on Invertebrate Paleontology. Part K, Mollusca 3. Univ. of Kansas Press, 519 pp.Google Scholar
Wood, A. & Smith, A. J. 1959. The sedimentation and sedimentary history of the Aberystwyth Grits (Upper Llandoverian). Q. Jl geol. Soc. Lond. 114, 163–95.CrossRefGoogle Scholar