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Quartz-Carbonate Veining and Deformation in Namurian Turbidite Sandstones of the Crackington Measures, North Cornwall

Published online by Cambridge University Press:  01 May 2009

David M. Mackintosh
Affiliation:
Department of Geology, University of Nigeria, Nsukka Campus, Eastern Nigeria.

Extract

Turbidite sandstones interbedded with argillites are cut by veins composed of quartz and ankerite derived from host sandstones during successive phases of deformation.

The existence of the oldest phase of deformation (F1) is established by the presence of its widespread vein system, which is folded by the F2 folds and cut by quartz veins of the later deformation phases.

The nature of the veining, its mode of origin and regional significance are considered.

Type
Articles
Copyright
Copyright © Cambridge University Press 1967

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References

REFERENCES

Ashwin, D. P., 1958. The coastal outcrop of the Culm Measures of South West England. Abstr. Proc. 2nd Conf. Geol. Geomorph. South West Eng. Roy. Geol. Soc., Cornwall.Google Scholar
Breddin, H., and Hellermann, E., 1962. Petrogene Mineralgänge in Paläozoikum zer Nordeifel und ihre Beziehungen zur inneren Deformation der Gesteine. Geol. Mitt., Aachen, 2, 197224.Google Scholar
de Sitter, L. U., 1956. Structural geology. London.Google Scholar
Dearman, W. R., 1962a. Devonian and Carboniferous stratigraphy of Cornwall. Geol. Mag., 98, 529530.CrossRefGoogle Scholar
Dearman, W. R., 1962b. The structure of mid-Devon and North Cornwall, Geol. Mag., 99, 476478.CrossRefGoogle Scholar
Freshney, E. C., McKeown, M. C., Williams, M., and Dearman, W. R., 1966. Structural observations in the Bude to Tintagel Area of the coast of North Cornwall, England. Geologie Mijnb., 45, 4147.Google Scholar
Hinde, G. J., and Fox, H., 1895. A well-marked horizon of radiolarian cherts in the Lower Culm Measures, Devon, Cornwall, and West Somerset. Q. Jl geol. Soc. Lond., 51, 609668.CrossRefGoogle Scholar
Mackintosh, D. M., 1966. Tectonics of the North Cornish Coast, England. Geologie Mijnb., 45, 4849.Google Scholar
Simpson, S., 1962. Structures of Devon and Cornwall. Geol. Mag., 99, 284286.CrossRefGoogle Scholar
Turner, F. J., and Weiss, L. E., 1963. Structural analysis of metamorphic tectonites. New York.Google Scholar
Voll, G., 1960. New work on petrofabrics. Lpool Manchr geol. J., 2, 503567.CrossRefGoogle Scholar
Zwart, H. J., 1964. The development of successive structures in the Devonian and Carboniferous of Devon and Cornwall. Geologie Mijnb., 43, 516526.Google Scholar