12 \ GEOLOGY OF THE SON VALLEY, ETC. 



elsewhere, and there do not appear to be any special features to be 

 noted. 



The Gondwana boundary takes a bend southwards, a short 

 way east of the Banas, and at the same time 



Gondwanas. e 



becomes an ordinary boundary of unconform- 

 able contact. Near Sureyha the boundary once more assumes a 

 faulted form which it maintains nearly to the Gopat. Thence for 

 some three or four miles its nature becomes doubtful once more, but 

 before the 8 2° meridian is reached, it again assumes the faulted form. 

 About three miles west of Marhwas the upper Gondwanas cease 

 and the rocks in contact with the crystallines belong to the Damudar 

 series, till near the Gopat an outlier of the upper Gondwanas is again 

 found in contact with the crystallines. 



( 124 ) 



