TALCHEER COAL FIELD. 73 



hardened rock is produced. When it abuts against the gneiss, this also 

 is somewhat hardened ; but from its slight porosity, the effect does not 

 extend so far from the vein, and is necessarily less apparent than in the 

 softer sandstone. Some of the hills composed of this rock cannot 

 have an elevation of less than 500 feet above the plain in which they 

 stand, and although very steep, must be of considerable breadth at their 

 base. Bodaberna hill, a trigonometrical station, is entirely composed 

 of this vein and the hardened sandstone on its sides, and so, in great 

 measure, is Kerjang hill. 



This rock appears on the Bodaberna Fault from Dereng to beyond 

 Kerjang, and on the Kerjang Fault from Takua to Kondaigula in 

 Kehrakol. 



It follows the fault bounding the field on the North-west from Dolham 

 to Purtabahal, and perhaps further, and again occurs near Konchonipur, 

 where its relations have not been thoroughly made out. The fault there 

 is possibly the great Kerjang Fault, thrown back by the fault which 

 bounds the field on the North-west. 



This rock is probably identical with the so-called pseudomorphous 

 quartz mentioned by Mr. Williams as occurring in the neighborhood 

 of Hazareebasrh.* 



In taking a general view of the Talcheer field, we observe that it is 



General remai-ks on the divided, as it Were, into two parts by the large valley 



of the Ouli ; that to the East of this is the area of 



the lower divisions, while to the West there is an immense preponderance 



G al d' f fi Id of the upper grits. Hence there is throughout the 



South-east to North-west, ggj^j j^ general a dip from East to West, or rather 



from South east to North-west, compensated by the great faults which 



form the North and North-west boundaries, and which intersect in 



the rieighborhood of Dolham in Kehrakol. 



* Vide Report on the Kymore Mountains, &c., p. 8"0. It should be remarked that the 

 quartz vehis, mentioned by Mr. Williams, occurred in raetamorphic i-ocks. 



L 



