Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-15T01:48:07.267Z Has data issue: false hasContentIssue false
  • English
  • Français

The Relation Between the Quartz Fabric and Fold Movements in a Folded Calc-Silicate Rock from the Moines of Scotland

Published online by Cambridge University Press:  01 May 2009

T. J. Dhonau
T. J. Dhonau
Affiliation:
Department of Geology, Imperial College, London, S.W. 7.
Get access Rights & Permissions [Opens in a new window]

Abstract

Petrofabric analyses of quartz c-axes have been made at four locations round a fold in a calc-silicate rock. The movement direction during the folding is deduced from the deformation of an older lineation. Two fabrics are present: the earlier, associated with the deformed lineation, is being replaced by a fabric associated with the formation of the fold. It is shown how the symmetry of the later fabric is related not to the axis of the fold but to the direction of the movement that produced the fold; and how the quartz c-axes lie on a conical surface, giving a small circle on a stereogram plot.

Type
Articles
Information
Geological Magazine , Volume 98 , Issue 4 , August 1961 , pp. 313 - 316
Copyright
Copyright © Cambridge University Press 1961

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Fairbairn, H. W., 1949. Structural Petrology of Deformed Rocks, pp. 7–9. Addison-Wesley Publishing Company.Google Scholar
Ramsay, J. G., 1960. The Deformation of Early Linear Structures in Areas of Repeated Folding. J. Geol., 68, p. 75.CrossRefGoogle Scholar
Weiss, L. E., 1959. Geometry of Superimposed Folding. Bull. geol. Soc. Amer., 70, p. 91.CrossRefGoogle Scholar