DESCRIPTIVE GEOLOGY : CRYSTALLINE AND METAMORPHIC ZONE. 237 



ation of the fragments and the production of what might at first 

 sight be mistaken for a conglomeratic structure. This rock weathers 

 into bold little heights crowning the hill-tops. The above is interest- 

 ing as affording a definite proof that in certain places the limestone 

 does become sandy by a gradual change of its material. 



Intimately connected with and surrounding the three outcrop 

 . , , ., areas of Infra-Trias limestone come lar^e areas 



A few remarks on the ° 



Tanol schistose quartz- occupied by the Tanols. They have been 



ite lying between and 



round the Infra-Trias described in general terms before, and have 



limestone areas. . . 



been several times relerred to in this chapter. 

 These rocks are peculiar in many ways, and neither Wynne nor 

 myself have been able to satisfactorily determine their relative posi- 

 tion among the other formations of Hazara. 



It is scarcely necessary to give individual sections illustrative of 

 these rocks, because everywhere are they the same lithologically, and 

 everywhere is the dip of their foliation and shear planes in towards 

 the higher mountain ranges at not very high angles. They likewise 

 do not vary much, nor possess any lithological sequence. Briefly 

 stated they consist everywhere of a very great thickness of massive, 

 rather coarse, felspathic, schistose quartzites, becoming faintly con- 

 glomeratic in places and pale white or cream coloured as a rule. 

 In spite of the dynamic metamorphism that has so manifestly affected 

 them, in common with many other rocks of this region, they have 

 not the appearance that generally appertains to quartzites of very 

 great antiquity. The separate grains of the rock are loosely aggre- 

 gated together, not cemented by secondary silica. Thus structurally, 

 these rocks are as far removed as possible from a glassy quartzite. 

 In colour too they differ materially from the ancient, dark grey, 

 purple, or greenish quartzites belonging to the Slate series. 



Instead, therefore, of describing local sections in these rocks, I 

 shall now summarise in a few statements all that I have been able to 

 learn from a study of local sections in them : — 



(1) In the field their outcrop areas are always confluent with 



( 237 ) 



