METAMORPHICS. 13 



CHAPTER II. 



IDENTIFICATION AND DISTRIBUTION OF ROCKS. 



§ 5. — Metamorphics. 



The metamorphic rocks are exposed all along the southern boun- 



Exposed along the dar y of the area > the J unction with the sedimen- 

 southern boundary. f- arv rocks is, however, covered at the eastern 



end by trap, though only as far as a short distance west of Dala vil- 

 lage (E. Lon. 78 54'), beyond which the boundary is free from trap 

 to the extreme west, where it is again covered. 



There are also some remarkable inliers of metamorphic rocks 

 Inliers north of the separated from the main mass by the Talchirs ; 

 boundary. they are in no case at any great distance from 



the boundary, and in most cases they are in the neighbourhood of 

 faults which lie to the north of them and have an upthrow to the 

 south. This is well seen in the inliers at Chuttoa (E. Lon. 78 39'), 

 Bhaweye (E. Lon. 78 34), Chordongri (E. Lon. 78 8'), and near 

 Binsandhana (E. Lon. 78 27') ; there are also several small inliers 

 in the deep valleys near the boundary north of Niramba-Jameye 

 villages (E. Lon. 78 27'), though here the connection with the faults 

 is perhaps not so evident, as they are situated at a much greater dis- 

 tance from the line of faulting. The spur of metamorphics running 

 out to the east by Diheri and Tutama (E. Lon. 78 23') may probably 

 be traced to the same cause. This line of faulting has thrown up the 

 rocks to the south of it relatively to those to the north. The tendency 

 of denudation has been to keep the surface of the ground level so far 

 as allowed by the inequalities in resisting power of the various rocks 

 to the eroding forces. The surface of metamorphics on which the 

 Talchirs were deposited must have been very uneven, and inliers 

 would have eventually appeared without the existence of the faults, 

 though the presence of the faults, by bringing the bottom rock to a 

 relatively higher level, has hastened their appearance. 



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