CHAPTER XL 



FAULTS. 



Evidence of disturbance by faulting within the limits of the Raj- 

 mehal hills is, throughout the greater portion of the area, but seldom 

 met with. 



In the Ramgarh hills, south of the Brahmini river, there is a good 

 deal of localised faulting of the boundary. The character of these faults 

 will be best understood by a reference to the map. 



They are marked in the extreme south by strong runs of pseudo- 

 morphic quartz or fault-rock. Several good sections are exposed, shewing 

 the character of the junction between the sandstones and gneiss. 

 Towards the Brahmini, where the Talchirs and Barakars are exposed, the 

 downthrow of the main bounding fault steadily diminishes, and in the 

 section exposed in the Brahmini, the bottom Talchir boulder bed appears 

 to have been merely crushed and to have then slid down a little from its 

 original position. 



In the country to the north there are a few other faults and slips 

 which have been chiefly detected by their action upon coal seams. They 

 are, without exception, of but small extent, and have produced little or 

 no effect upon the general physical relations of the rocks. 



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