THE CAPE SYSTEM 121 



mountains traversed by Mitchell's Pass is bent into an 

 S-shaped fold. This fold becomes wider in the Hex 

 Kiver Mountains, the northern anticline forms the 

 eastern part of that range, and the syncline is occupied 

 by the Bokkeveld beds of the Hex Kiver Valley. This 

 S-shaped structure is repeated in the Keerom and 

 Kwardouw Bergen, the anticline on the north forming 

 the Wagenboom Berg and the syncline the Bokke- 

 veld area of the Coo and the Keizie. The southern limb 

 of the syncline, rather a closely folded belt than a simple 

 limb, forms the commencement of the Langebergen to 

 which we shall revert presently. 



South of the Winterhoek (Tulbagh) mass, which is 

 the southern limit of the western anticlines of the Oli- 

 fant's Kiver area, the valleys of the Klein Berg and 

 Breede Kivers have been lowered through the Table 

 Mountain series, and are now formed by the Pre-Cape 

 rocks, separating the two great mountainous ridges of 

 the Koode Zand-Drakenstein and the Witzenberg- 

 Mostert's Hoek Kanges. The latter join with the 

 southern Schurfteberg to form the Hex Kiver Mountains 

 described above. The former, which is affected by two 

 groups of faults trending north-west and north-north- 

 west respectively, is at first a simple ridge, but it gradu- 

 ally widens out, and south of Bain's Kloof it is broken 

 by inliers of granite (Du Toit's Kloof), Malmesbury 

 beds (Eland's Kloof) and of both granite and sedimentary 

 rocks (French Hoek). It is folded along two directions ; 

 the north-east folds appear in the syncline of Bokkeveld 

 beds on which Villiersdorp stands while ihe north-west 

 folds bring the Table Mountain series down below the 



