DESCRIPTIVE GEOLOGY: SLATE ZONE. 



'57 



with the platform of Trias underneath. The coal-band was not found 

 on this side. 



From the top of the ridge a splendid view is obtained down the 

 Slate zone of the Dore valley, and with the south face of Sirban 

 standing out clear before us in all its details. I have attempted to 

 represent this in pi. 9. The whole breadth of the Slate zone is 

 comprised in that view, the pink colour to the right indicating the 

 Crystalline and metamorphic zone, and the burnt sienna tint to the left 

 representing the Nummulitic zone. Besides Sirban hill, which is the 

 chief object in the view, Mohar, 5,815 feet, appears near the extreme 

 left, and below it in the nearer middle distance the tail end of the 

 ridge on which we are standing, and to the right uf it the Oochar 

 group of little hills, with the Kotluh continuation a little beyond in 

 the further middle distance. The central parts of the view are 

 occupied by the gravel terraces and alluvium of the Dore valley, 

 with the river-bed winding its sinuous course away into the distance 

 by Hureepoor. The Abbottabad plain is partly visible to the rio-ht. 

 No one but a geologist, who has plodded over every foot of the 

 country and knows it by heart, can appreciate a panorama such 

 as this in the wonderfully transparent air of the Punjab, where 

 each twist and turn of the formations can be picked out and recog- 

 nised by some slight difference, which the uninitiated would fail 

 to see. 



We can easily make our way the whole length of the ridge before 

 The same ridge near us stretching away to the Tope hill. At Jhan 

 J han ' (there are two villages of this name not far 



apart) the section across the ridge is practically the same as it 

 is across the ridge south-east of Juswal. There are as much as 

 200 feet of Jura-Cretaceous lying on a marked platform of Trias 

 on the western side of the ridge and gently dipping in towards 

 the hill. They are followed by Grey limestone, but the fluctuating 

 dip in this soon brings the Spiti shales, etc., into view again. Just 

 above the eastern Jhan the exposure is but a small one and none 

 of the underlying formations are seen, for the dip once more plunges 



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