DESCRIPTIVE GEOLOGY : SLATE ZONE. IIQ 



folding) of the area since the deposition of the great and ancient 

 Slate series. 



Sections in the Slate zone north-west of Abbottabad. 

 The country to the north-west of Abbottabad, which is comprised 

 within the Slate zone, is simply a continuation of the monotonous slate 

 hills which form the wonderfully regular chain on the south-east 

 side of the Miankhaki stream. The slates are unbroken by anything 

 but a few harder beds of quartzite here and there, and by one or 

 two very insignificant trap dykes. There are no limestone bands to 

 mark out the nature and amount of the flexures into which the rocks 

 are thrown. 



At one point below Khotukka village, over against the Trias of 

 Sulhud, there is an isolated block of Trias limestone standing alone 

 on the slates. It is probably a detached piece not in its normal 

 position. It is one of the masses called " erratic" by Wynne, but 

 there seems little reason for regarding its position there as due to 

 glacial action or any method of transport other than a displacement 

 due to earth movements, or probably to a mere landslip of very 

 ancient date. 



As regards the relation of the north-western side of the Slate 

 zone here to the schistose and metamorphic zone, it will be better to 

 postpone any remarks until the latter zone comes to be described in 

 detail. 



Slate zone: Sections near Meerpoor, Kakool, Turnawaee ) Dubbun } 

 and Gurhee-Hubeebooluh, 



Between Sirban mountain and the complicated area now to be 



described there is a wide stretch of alluvium 



Abbottabad plain. 



forming what is known as the Abbottabad 



dharah, or plain : beneath which all the rocks of Sirban vanish to 



reappear again in the neighbourhood of Meerpoor, Kakool, and 



Mundroch. In elevation this plain is about 4,000 feet, and it is 



deeply cut into by steep-sided little u nullahs, " e.g., the JubN., most 



of which carry their water to the Dore river. On the north side of this 



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