DESCRIPTIVE GEOLOGY: SLATE ZONE. 165 



a side-view an irregular waving line of junction with the slates, and 

 descending with a steady dip of 6o° as far as the eye can trace it 

 among the side ravines without shewing any sign of returning upon 

 itself. In the Bagh direction the Nummulitics are in contact with the 

 slates, dipping down against them as in the hills north of Naruh, and 

 as we shall see to be the case along the northern edge of the whole 

 Nummulitic zone when we come to the description of it. A fault of 

 considerable magnitude is, therefore, indicated on the north-western 

 side of this block of formations. Every stratigraphical member of 

 the normal sequence is present in this section, but on account of the 

 forest and undergrowth no good exposures are available. Two 

 noticeable gaps in the ridge are coincident, one with the outcrop 

 of the Spiti shales, and the other with that of the base of the 

 Trias. 



This block of formations, wedged in by a fault on its north-western 

 side, is continued along its strike in both directions. Towards the 

 north-east it passes to the hill-spurs north-west of Bara Gali, and the 

 marked gap between the slates and the base of the Trias is distinctly 

 recognizable, even among the forest-clad slopes, as also is the grand 

 sweep at an angle of 50 or 6o°, which the massively bedded rock 

 makes above the thin-bedded slates. The stream between Taumi 

 and the Bara Gali spur has, however, cut through the younger 

 formations above the Trias so that their outcrops bend aside, that 

 on the Taumi ridge being stopped by the fault, and that on the Bara 

 Gali spur shewing a returning bend upwards constituting a syncli- 

 nal. This southern return bend also carries with it a thin outcrop 

 of the Trias, which travels towards Bugnotur along the western 

 flank of the spur overhanging the stream between it and the Bagh- 

 Maira hill. In a south-westerly direction the same block of forma- 

 tions, bounded as before by the fault on the north-west, passes across 

 the Juggiyan spurs obliquely, the Jura-Cretaceous band making a 

 marked line in the vicinity of Juggiyan village. A little beyond 

 this a cross-fault is inferred and has been inserted on the map on 

 account of a section followed from the hill-top north of Chair down 



( 165 ) 



