94 W. BLANPORD, WESTERN INDIA. [PaRT II. 



Near Burwai, they rest quite unconformably upon both Bijawurs and 



metamorphics. 



In the streams running- from the north into the Nerbudda some 



a i.- ■ n 1, fine sections of Vindhyans are also seen. There 

 Sections m Gorapacnar -' 



and Kanyar streams. jg^ however, no object to be gained in describing 



them in detail. In the Gorapachar stream, just above Peepria and the 

 shrine of Sitabund, and again on the Kanyar stream, south of the 

 halting place known as Andhari-Bagh, the Vindhyans are faulted 

 against the Bijawurs, and the fault, which is a 



Fault between Vindhy- .• i« n i • i i i 



ans and Bijawurs at continuation 01 the same in both places and 



Sitabund, &c. j. J.^ • n j.- 'r -i j. 



separates the two formations tor many miles, must 



be of very considerable throw, probably many thousands of feet. 



Before returning to the Bijawurs, it is as well to mention the 



^j. ,, ^. 1 extreme north-west extension of the Vindhyans 



Vmdnyans on Chorul J 



^^^^^- on the Chorul River, north of Burwai. They 



here rest upon Bijawurs and extend up the valley for some miles until 

 covered by trap. The Choral traverses them in a deep gorge, a constant 

 occurrence in streams running through the Vindhyans, and due again 

 Formation of gorges ^° *^®^^ resistance to atmospheric disintegrating- 

 m the Vmdhyans. action. In most rocks, the action of air and rain- 



water disintegrates the surface so rapidly that that surface is swept off 

 and lowered by rain nearly as fast as the surface of the solid rock is 

 ground away by the action of running water and the detritus carried 

 down by it. In such quartzites as the Vindhyans, the chemical action 

 of rain and air are at a minimum. 



In the Chorul, east of Bulwara, where Vindhyans replace the Bijawurs 



in the stream, it is not quite clear whether they are 



faulted or not, but a little farther north, in the bed 



of the ravine, a fault distinctly traverses the Vindhyans, and strikes east-20°- 



north. A mile or two farther up the stream, they are covered up by trap. 



West of this no Vindhyans occur in the Nerbudda valley. 



( S56 ) 



