MALLETj VINDHYAN SERIES. 87 



hundred feet thick, and at Rampur the Gunoorgurh shales appear 



underneath the sub-trappean limestone. A closer search along the foot 



of the trappean scarp between the above two localities would perhaps 



discover an outcrop of the Bundair limestone. 



Westwards from Rampur no lower Bundairs occur within the limit 



yet surveyed for more than 80 miles, their next re-appearance being near 



Hoshungabad. Here they are greatly reduced in thickness, and seem to 



include only the two lowest of the four sub-divisions described to the 



eastward. The section comprises — 



Eed shales 30 feet 



Bundair limestone 110 ... 



Grunoorgurli shales 390 





((dj — Red shales 



... 125 feet, 



3 390 „ 



(c) — Eed limestone 

 .■ (b) — Eed shales 



... 15 „ 

 ... 130 „ 





\^(a) — Greenish shales 



... 120 „ 



530 feet 







Lower Bundairs 



The highest part of the Rewah sandstone is rather thin-bedded, and 

 becomes more so till it gradually passes into arenaceous shale, the junc- 

 tion thus differing from jthat in the Singrampur valley. The section up 

 the south end of Gunoorgurh hill includes, at the base (a) greenish- 

 grey or. greenish silicious, argillaceous, slightly micaceous thin-bedded 

 shales mixed with arenaceous layers and rippled. These higher up are 

 interstratified with and pass into dark red argillaceous shales (h) similar 

 to those at Sagoni. They are mostly pure argillaceous, brittle and 

 splintery, but where calcareous are less frangible. Above these comes 

 in a band of dark red limestone ( ej and thin red shales again (d), then 

 with a tolerably well marked junction comes thin and evenly bedded 

 sihcious looking limestone, of which the usual color is hght grey, some- 

 times greenish-grey or pink. It is divided into angular pieces by sharp 

 vertical joints, and bears considerable resemblance to the Rotasgm'h 



( S7 ) 



