Fauna and Stratigraphy of the Stormberg 



441 



lies about "200 feet above the upper limit of the Burghersdorp Beds 

 and forms a very prominent horizon, showing the same characters 

 as in the south. The Inchve Coal is not present, except that it is 

 represented in places by a hard black carbonaceous sandstone with 

 thin streaks of coal. The Gala and Gubenxa coals are represented 

 by 8 feet of mixed coal and shale. These lie WO feet above the 

 Indwe Coal. 



The upper beds are very similar throughout and consists of coarse- 

 grained pebbly sandstone, usually finer in texture than is the case 

 further south at Indwe in the Transkei. Higher up are fine-grained 

 sandstones with shales and rnudstones, sometimes reddish in colour, 

 followed by soft pinkish felspathic grits. 



M/ILTENO BEDS 



ABOUT 300' 



ABOUT lio'-zso' cwt SANDSTOHC i 

 iso' Rco BEOS J 



ABOUT 450 



BASALT 



VE. SANDSTONE -SEEN 

 ON THABA 'NCHU MOUNTAIN 



ON SLOPES OF 

 > TbAB* 'NCHUS HILLS 



BLUE * GHEr SHALES & MUOSTONES WITH occ COALY SEAMS 



Fig. 48. Section in Thaba' Nchu District, O.F.S. 



Orange Free State. Little detailed work has been done on the 

 Stormberg Beds which lie in the Eastern Free State between the 

 Orange River and Harrismith. It is certain that the Molteno Beds 

 are absent at the latter place where the Red Beds rest unconform- 

 ably on the Upper Beaufort Beds; and there is probably a gradual 

 thinning out of the formation northwards from the Orange River, 

 similar to that which has been traced by Du Toit in Natal. At 

 Thaba' Nchu the beds are about 300 feet thick; the lower two-thirds, 

 according to a section supplied by the Irrigation Department, consists 

 of blue and grey shales and mudstones with occasional coaly seams, 

 the upper third of coarse gritty sandstone. At Verkijkersberg, S.W. 

 of Memel, in the extreme north-east of the Orange Free State, the 

 Molteno Beds are also absent. 



Transkei. In the Transkei the maximum thickness varies from 

 1800 feet in the south of the area to 1400 feet in the north. The 

 Beds are essentially arenaceous. They consist of thick layers of coarse 



