DESCRIPTIVE GEOLOGY: SLATE ZONE. l6l 



of the crook and return via Sudruh to Seergah. Thus the lower 

 portion of the Sudruh spur is a synclinal fold in the Grey limestone 

 and the subjacent Jura-Cretaceous, its south-eastern limb being 

 inverted. The coal-bed along this spur was not traced by me. 

 Above Sudruh towards Tope hill, after the Jura-Cretaceous band is 

 crossed, we meet with a wide outcrop of Trias up to the point on 

 the spur near the final ridge where the tooth-like rock of Trias is 

 overlaid by the last normal fold of the Jura-Cretaceous and Nummu- 

 litic rocks. The structure of this spur is well seen in the view north- 

 north-east from above Juswal. It is distinguished from the Deesal 

 spur by not having any representative of the Deesal outlier of Grey 

 limestone, for the reason that the upper limb of the sigmaflexure or 

 overfold has passed above what is now the highest point of the spur, 

 I have already alluded to the fault running north-east from 

 Jhan which cuts the eastern spur of the mountain 



Section down the Qn the second a 6 » of 66 <c This fault, which 

 eastern spur of Tope. ^^ ' 



dies out below Jhan and is of small amount on 

 the spur, becomes more important as it travels north-east down the 

 steep crags between Deesal and the eastern spur into the gorge of 

 the Dore river ; for, north-west of the fault the sequence from Khun 

 down to the river embraces every formation to the slates, whilst 

 south-east of the fault the slates are excluded from the section and 

 Trias limestone occupies the bed of the river. The gently descending 

 part of the eastern spur below the fault is in the Nummuliticand Grey 

 limestones, with a coal exposure a few hundred feet above Bandee, 

 but the slopes steepen to the Dore in the direction of Bugnotur, and 

 become convex. A dark line of fields, with sometimes the usual 

 gap and ridge, especially marked at the northern extremity of the 

 spur, indicates the Spiti shales and the underlying platform of Trias. 

 The unconformable junction of the Spiti shales on the Trias, and the 

 overstepping of the former across the edges of the latter are well 

 seen here. The base of the Spiti shales consisting of a layer of 

 martite wraps over the Trias like a stair-carpet. This line of Spit* 

 shales may easily be found, and if from its position the eye is 

 M ( 161 ) 



