106 ball: geology of atjeunga and hutar coal fields. 



viewed through the pellucid waters. In the well -shaded Hulka valley 

 the grotesque forms of the eroded sandstones and thfe brilliant 

 hues of the vegetation, which includes ferns, a small Arum, Brosera, 

 grasses, mosses, &c., combine to make up a scene which is most 

 refreshing in March or April after the black, scorched, and dusty 

 jungles outside. 



Towards the northern end of the gorge the beds are tilted again, 

 dipping west of south at an angle of 8°. 



In the ;6ijka hill (2,479 feet) these rocks attain their maximum 

 development, though it is difficult to estimate the 



Bijka hill. _ • p ,\ r -H • ' 



thickness exactly. The summit oi the mii is 

 about 1,300 feet above the village. The inclination of the beds is from 

 one point of view only 5°. The northern face of the hill is backed by a 

 strong ridge of fault rock, which marks the position of the main bound- 

 ary fault. In part, then, the elevation may be due to tilted Barakars at 

 the base, but I think it probable that the thickness of Mahadevas cannot 

 be far short of 1,000 feet. 



Towards the top the sandstones present a somewhat vitreous 



appearance, being not unlike some forms of Vindhyan rocks. Beyond 



the Bijka hill the older groups are cut out completely, faulted junctions 



between the edges of the gneiss and the Mahadevas being exposed on 



the slopes. Before the Siipahi is reached, a cross- 



CrOSS-fault. -,••■, n ^ ' Ti • 111 



fault limits the further extension, it is probable 

 that a much thinned out deposit of Barakars has been here cut off. 

 That the Barakars were dying out here is evidenced by the fact that 

 only two miles further west the Mahadevas, at a level perhaps 300 feet 

 higher, rest directly on the gneiss. A small patch of Talchir boulder 

 beds at the foot of the scarp, and the Barakar and Talchir beds at Biiada, 

 are the sole remnants of the lower groups which are left to indicate 

 former extension. 



The outlier which in the Sitwa hill rests on a base of gneiss 

 spreads westwards through the level country near Budhunya. The 

 ( 106 ) 



