NERBUDDA DISTRICT. 221 



inches long, but they break mostly into short fragments without showing 



regular articulation. 



The trap area of our map may be considered as forming a continua- 



., , „ , ., tion of the great Deccan trap, described in 1833 by 



Col. Sykes on the & L ' J 



Deccan Trap. q i g y k es - m fa Transactions of the Geological 



Society of London, (a) and many of the remarks he there makes are appli- 

 cable to this part of the country. He mentions the pseudo-bedded char- 

 acter as very prominently marked by terraces on all the hills save where 

 the many strata " instead of being arranged in steps form a continuous 

 " wall. At the Ahopeh pass at the source of the Goreh river, the wall 

 "or scarp is fully 1,500 feet high: indeed on the north-west face of the 

 " hill fort of Hurreechundurghur, the escarpment can scarcely be less 

 " than double that height. On the other hand the steps are some- 

 " times effaced, and a hill has a rapid slope. This originates in a 

 " succession of beds of the softer amygdaloids without any basaltic in- 

 " terstratification : their superior angles disintegrate and a slope results. 

 " But most usually three or four beds of amygdaloid are found be- 

 (( tween two strata of compact basalt. The former disintegrate leaving a 

 " slope, which is not unfrequently covered with forest trees forming a 

 " picturesque belt. The basaltic scarp remains entire, or it may be 

 " partially buried by the debris from the amygdaloids above, but its 

 f great thickness usually preserves it from obliteration, and it rises 

 " from the wood below with majestic effect ; its black front being 

 " finely contrasted with the rich and lively green of its sylvan asso- 

 « date." (6) 



In the north face of the range at the place where it is called Korekera 



hill, (see map) there is a scarp altogether about 

 Korekera escarpment. 



1,200 feet high, of which 800 feet is clear preci- 

 pice, and this is the nearest approach to the gigantic escarpments of 



(a) Trans. Geol. Soc, London, 2nd Ser., Vol. IV, p. 409.— (6) Ibid. p. 414. 



