RAJMEHAL GROUP. 67 



" intrusions may have been contemporaneous with the great volcanic out- 

 " bursts, of which evidence exists in the Rajmehal hills. The dykes 

 " are certainly newer than the Panchet rocks, which they traverse 

 " in abundance ; and they are also newer than all the faults of the 

 " districts. Now, however much evidence there may be of faulting and 

 " disturbance preceding the Kajmehal period, the rocks belonging to that 

 " formation have, in the district where alone they occur in Bengal, 

 " scarcely been moved from their original position, and faults are very 

 " rare amongst them. It is probable that a period of elevation and of 

 " great and long-continued disturbance was concluded in Bengal by the 

 " outbursts of lava now forming the range of hills which stretches from 

 " the neighbourhood of Suri to the banks of the Ganges." 



The foregoing remarks would apply equally to the few trap dykes 

 in the immediate vicinity of the hills. 



( 221 ) 



