Abstract
A petrofabric technique of fold analysis, whereby a quartz fold is "unrolled, " as applied to a simple fold by Ladurner (1954), is given in detail. The technique is applied to a more complex fold from the Dalradian of W. Perthshire, in which the degree of preferred orientation of quartz c-axes is weaker than in the fold cited by Ladurner (op. cit). It is concluded that the technique gives results allowing a clear cut interpretation only when one strong maximum occurs in the quartz diagrams.

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