142 MIDDLEM1SS: GEOLOGY OF HAZARA AND BLACK MOUNTAIN. 



The shaded parts represent cores of Spiti shales 

 in the form of completely crushed and churned- 

 up masses of nearly homogeneous carbonaceous 

 clay. From its black and coaly appearance it is 

 one of those beds that might at first sight be 

 mistaken for the coal-bed of Hewson's ; but 

 that such is not the case, is proved by the occur- 

 rence here and there of undigested fragments. 

 Further away up-stream, about 250 — 300 feet 

 above the band, the true variegated sandstone 

 or coal-bearing bed appears in a very steep out- 

 crop, from which respectable pieces of anthraci- 

 tic coal, 100 feet above the river (the aid of a 

 rope is necessary to climb to it), were excavated. 

 The blocks were found, as elsewhere, to be full 



of bright, shining shear planes, cutting across one another minutely. 



A sketch section is given below, fig. 13, in which the river-bed and 



Fig. 12. 



Bunyan hill. 



E.SE 



■tf.W 



Gorge of Her toll Tl. 



£'«=Nummulitic limestone. 



c =■ Coal-bed and variegated sandstone 



b =»Grey limestone. 



a —Spiti shales and Cretaceous. 

 142 ) 



■ 



Nummulitic series. 



