Fauna and Stratigraphy of the Storvrib&rg Series. 



451 



and homogeneous and only rarely show traces of bedding planes, and 

 then only at wide intervals. The colour varies from deep red to 

 almost pure white or cream. The red sandstone is usually hard and 

 quartzitic; where weathered and soft, it loses its red colour and 



Fig. 53. Sketch-map of Transvaal to show distribution of Buahveld Series. 



becomes yellowish or white. The sandstone is distinguished by well- 

 marked vertical jointing. 



West of Naboomspruit Station the sandstone rests directly on granite, 

 but elsewhere upon the Coal-Measure Grits. It has a thickness there 

 of about 30 feet. Its upper portion is massive, but towards the base 

 it shows frequent traces of stratification, and the lowest beds consist 

 of distinct bands of sandstones alternating with coarse gritty and 



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