4a MALLET, VINDHYAN SERIES. 



mostly thin-bedded (^ to | inches) of a light grey, passing sometimes 

 into greenish-grey and salmon-color, and very fine and even in texture. 

 Many thicker beds are included, which are often semi-crystalline, with 

 irregular seams of calcite. In some places flinty laminae alternate with 

 those of limestone, and the rock is generally cut up by jointing into 

 small angular pieces. It is in this limestone that the sacred ' Gupta' 

 cavern of the Doorgowtee valley exists, in which the direction of the 

 passages is mainly determined by the jointing, and partly by cracks and 

 fissures in the contorted strata. 



Mr. Williams estimates the thickness at Rotasgurh at 700 feet. 

 Near the mouth of the Kunhur it is about as follows-: — 



7. Limestone ... ... ... 150 



8. Shale and Sandstone ... ... ... 250 



9. Limestone ... ... ... 400 



10. Shale ... ' ... ... ... 150 



Total ... 950 



To the west, where these beds spread over the low ground beneath 

 the scarp, it would be difficult to form any reliable conjectm-e as to their 

 thickness, but they fully maintain their prominent position in the series. 

 Here perhaps the rock is rather thicker-bedded and less pm'e, more mixed 

 with argillaceous layers than to the east. From Mungesm- hiU, east- 

 wards, nearly to Rotasgurh, the limestone is 

 11. Limestones. covered by shales, which are usually earthy, calca- 



reous in the lower part, and above hard, black, and splintery, and divided 

 by joints into small sub-cubical and triangular pieces. Above these 

 again, and passing into them, another band of small Kmestone (11) is 

 found in one or two sections. The shales are absent at Rotasgurh and 

 wherever the lower series is exposed on the northern side of the escarp- 

 ment, the Kymores resting there directly on the Rotas limestone (9) . 

 They are further wanting between Agoree and Rajgurh, but are again found 

 ( 42 ) 



