THE KOTAH DUN. 39 



due ; for a fault runs E.S.E. and W.N.W. at that point, with upheaval 

 to the south ; an earth-movement which has hoisted up these con- 

 glomerate masses to their present position, and which has not yet been 

 masked by the levelling of denudatory activity. Only the solitary 

 thread of the waters of the Khichri has gone on for ages eating 

 through the rocky gorge as the hilly mass rose ; its cutting power 

 thereby quickened and strengthened, just as the cutting power of a 

 circular saw is proportional to the pressure of the wood or metal 

 against it. 



The fault appears to die out in the direction of the Dabka, being 

 represented in the latter river by a sharp bend only (see section II). 

 It also dies out in the opposite direction. About | mile up the 

 Jciman Pdni sot (9), north-west of Sitabani, a good illustration of 

 the fault can be seen. The beds to the north are horizontal, those 

 to the south being at first vertical, and then decreasing gradually in 

 their angle of dip up to the top of the ridge, where they are about 

 30 S. W. Beyond this in a W. N. W. direction the fault gradually 

 comes to an end ; for in the Tehra (Taila) s6t, and along the road 

 from there to Bhalaon (Baloon) forest bungalow (10), the dip is con- 

 scientiously towards the north-east, at very low angles of about 5 . 

 Thus the structure seen in the Dabka N. is returned to very nearly 

 in that direction owing to the extinction of the fault. 



Down the Khichri N. from Sitabani the dips are also to the south, 

 but rather to the east of south than to the west. The first visible 

 dip is 6o°, which lowers to 15 , and then to io° near Sal Kh6t chaor, 

 about a mile from Sitabani. The beds then flatten out into a syncli- 

 nal, on the south side of which the dip is N.N.E. at io° for another 

 mile or so, where a flat anticlinal runs along the Jirar s6t (11). South 

 of this the dips continue S.S.W. as far as the outlet from the hills, 

 where the culminating amount is 27 . The lowest beds seen in the 

 Jirar anticlinal are rather more sandy and clayey than any of the 

 other conglomerates. 



Here there are seen dips of between 30 and 20 S.S.W. from 

 the south edge of the hills up to 1,432 feet, 



Bah£rdagarhi sot. (12) 



bar. 



( 97 ) 



