NERBUDDA DISTRICT. 165 



This is only about one-half the minimum thickness of the same series as 

 seen in the Sohagpur country, and, as just stated, the greater portion of 

 the difference between the two must be assigned to the upper sub-divi- 

 sion (J) of the above list. 



Leaving the Tawa valley and proceeding up the Nerbudda valley for 

 about 35 miles (in a straight line) the hill district may be ao-ain entered 

 through a gorge, at the mouth of which the fortified village of Putteh- 

 pur stands (see map). Within and south of the narrow glens which 

 connect it with the Nerbudda valley, lies a wide spread of flat country. 



The flat ground is occupied by the Talcheer and Lower Damuda beds 



it is drained by the Deinwa river which, passing 



Deinwa valley. ° 



from here to the west among the hills joins the 



TaAva just above Bagra. This may be called the Lower Deinwa valley 

 and if we follow that stream, up its course, it will be found to wind 

 through deep glens, and between high vertical scarps, as it works its 

 way, from south to north, among the eastern and lower spurs of the 

 Puchmurri Hills. Again, to the south of these, its valley becomes once 

 more wide and flat. The stream itself and its tributaries, draining the 

 country under the southern face of the great Mahadeva sandstones of 

 Puchmurri, expose many fine sections of the rocks of the Lower Damuda 

 series, (rocks like the {d),(e) and (/) of our list), and similar to those 

 seen in the Tawa valley. Similar to these in texture and structure we have 

 fossiliferous shales, flags, and seams of impure coal, and like them in habit 

 we find an irregular and sometimes inverted dip, faults., and trap dykes. 

 The following sections will serve as examples of the general character. 



Section near Gorah village on a tributary of the 

 Gorah Section. , • 



Deinwa River ascending. * 



Thick massive whitish sandstones- — 



5 ft. in. Grey clunchy clay, — no partings into laminae, and 



altogether like a sand bank. 



* From Professor Oldham's notes. 



