MALLET, VINDHYAN SERIES. 99 



. The upper Bundairs coDsist entirely of sandstones of various colors, 

 and varying in texture from very fine to a rock almost coarse enough 

 to be called a conglomerate. The prevailing color is dark-red with white, 

 or sometimes greenish, spots, or frequently the white is disposed in streaks 

 parallel to the bedding, or in large irregular blotches. The lowest beds 

 of the sandstone, as well as the top of the shales beneath, are mostly of the 

 red variety, spotted with green. Above this there is nearly 100 feet of 

 fine greyish sandstone and then the coarse sandstone or grit. About 

 60 feet higher up we find the more characteristic colors, viz., the red, 

 -spotted white, and the red and white in patches. The latter appear to be 

 more frequent in the upper beds of the group. 



To the south-west of Kerowli the upper Bundairs, and further 

 west the lower Bundairs, are brought against the quartzite series by a 

 great fault. It is difiicult to estimate the throw accurately, but it cannot be 

 less than the thickness of the Vindhyans (excluding the highest beds of the 

 upper Bundairs,) and that of the quartzites exposed, making a total of 

 at least 4,000 feet. The throw appears to increase to the south-west, for 

 at Indergurh the lower Bundairs are faulted against the scAisi series. 

 Following the fault in the other direction to the north-east, we find it to 

 gradually diminish until it at length dies out. Thus, in the valley north- 



Fig. 10. Sketch section across Singanpur valley, a, Lower Bundair shales with 

 beds of sandstone : 5, Ked upper Bundair sandstone : c. Grey sandstone : d, Coarse 

 sandstone : e, Sandstone, highest beds of the series .-/, Fault. 



east of Kerowli the lower Bundairs are faulted against the upper. The 



sketch section. Fig. 10, represents the section near the head of the valley 



a little north of Singanpur where only the highest beds of shale make 



N ■ ( 99 ) 



