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SOUTH AFRICAN GEOLOGY
cline with a short transverse extension is often referred to as a whale-back anticline.
Fig. 24.—A, Knee-bends. B, Monocline, C, Isoclines.
Varieties of folds are of four main types. When the fold is abrupt and angular it is referred to as a knee bend.
Fig. 25.—Escarpment of the Gydow Mountains overlooking the Warm Bokkeveld. Two monoclines are shown
When the axis of the fold is inclined, the fold is said to be overfolded. If there is only one limb to the fold the
