GENERAL GEOLOGY 01' THE AREA. 7 



chlorite schist, strike west-north-west, east-south-east, dip north. Near 



the northern boundary of the coal-field, about a 

 Chloritic schist. 



mile west of Gumharia, the strike of tne crystal- 

 line schist becomes north-west to south-east, dipping north-east, at SO". 

 It is there true mica schist, which rises up to considerable heights in the 

 Khori hills. The road from Chumra to Kakankoja on the Kunhur tra- 

 verses this ground, which is formed by one or more steep folds in the schist, 

 there seen to alternate with a quartz rock of pebbly character. "With the 

 exception of a few isolated masses of intrusive granite, the rocks be- 

 tween the Khori hills and the gneissic region above described consist 

 chiefly of mica schists and quartz schist, forming a slightly undulating 

 country of an elevation of about 1,200 to 1,300 feet, with deeply eroded 

 river-courses. Some of the folds rise somewhat higher and form these 

 isolated masses, cut into deep valleys and sharp ridges by the number- 

 less streams. The strike near Bluthar Chura, as indeed nearly all over this 

 area, is north-west to south-east, dip north-east, but varying occasion- 

 ally to an east-west strike. Numerous quartz reefs traverse the area, 

 mostly in an east- west direction. 



Many hornblende dykes occur ; they may be taken as altered trap 

 Hornblende dykes. dykcs. Such is observed east of Chura, in the 



I Trap dykes. Kursa stream ; direction north-west to south-east, 



thickness about 20 yards. It is a very close-grained rock, and has caused 

 some local disturbance near the junction with the mica schist, which 

 there shows the same strike as the dyke, with dip to the south-west. 

 Near the boundary with the gneiss area of the Rer the folds in the 

 Boundary with gneiss Daica schist gradually turn round to a north-east to 

 natural. south-west direction — in fact, following the bound- 



ary line of the gneiss, which, I believe, is a natural one. 



Granitic rocks. 

 These rocks occupy a considerable portion of the area examined, and 



probably form the base on which the Gondwana 



Granitic rocks. 



rocks of the more central parts of the coal-field 

 rest. As exhibited on the map, we now find two long strips] of 



C 135 ) 



