NERBUDDA DISTRICT. 253 



south boundary now lies very near to what was the southern shore of 



Present S. boundary the 0ri § inal basin ° f de P 0sit of the rocks - The 



of Vindhyan not near study f the phenomena developed along the Maha- 



ancient limits or basin oi J r r D 



the deposit. deva fault, will render the observer familiar with 



the readily recognized indications of the proximity of the shore presented 

 by rocks which have been formed under such conditions. But no where 

 does the Vindhyan scarp expose any thing like a littoral bed. On the 

 contrary, the homogeneous character is as well preserved here as else- 

 where throughout the rocks, and the beds at the scarp seem perfectly 

 identical with those found in the most typical sections of the formation 



Vindhyan once stretch. aW ^ fl '° m *■ There is then eVei T reason to sup- 

 ed far to the south. pose that the Vindhyan sandstone beds did once 



stretch far to the south of their present actual boundary. No where, 

 however, have they ever been found to underlie any of the sandstones, 

 from the Talcheer beds up to the Lameta group inclusive. If they 

 had any where done so the fact could scarcely have escaped observation, 

 but all the rocks of the great sandstone series on the south side of the 

 Nerbudda are invariably found resting on or faulted against the old 

 crystalline rocks, when their boundary is reached. 



Now, if the Vindhyan fault be supposed to have existed prior to the 

 N 3 Id th n the deposition of the lowest Talcheer beds, then, as 

 Talcheers. that fault was (see above) a downthrow on the 



north, and would naturally have facilitated the complete removal by 

 denudation, of all the Vindhyan beds on the south side of it, we have 

 a ready explanation of the absence of those rocks under all the newer 

 sandstones &c, in this direction. 



If, on the other hand, we suppose that the Talcheer beds were deposited 



Difficult f ntrar before the fault shifted the Vindhyan rocks, we 



supposition. are met fay t he difficulty of accounting for the 



complete removal of the Vindhyan beds up to a nearly straight line 

 several hundred miles long, and in such a manner that a vast thickness 



