Abstract

The lead-zinc bearing Proterozoic rocks of Zawar, Rajasthan, show classic development of small-scale structures resulting from superposed folding and ductile shearing. The most penetrative deformation structure noted in the rocks is a schistosity (S1) axial planar to a phase of isoclinal folding (F1). The lineations which parallel the hinges ofF1 folds are deformed by a set of folds (F2) having vertical or very steep axial planes. At many places a crenulation cleavage (S2) has developed subparallel to the axial planes ofF2 folds, particularly in the psammopelitic rocks. The plunge and trend ofF2 folds vary widely over the area.

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