BH6T MAHALS OF KUMAUN. 1 83 



several plications and anticlinals. The upper part of the arch, with 

 the permo-trias and upper carboniferous series having been worn 

 away, the reversed flexure which seems to form the main mass of the 

 range between the Dhauli and Kuti Yangti, is made up of the lower 

 carboniferous limestone (7 and ja) and the compact, black limestone 

 (6) of the devonian. 



The north-eastern slope of the range down to the Kuti Yangti is 



Carboniferous of the chi e% built U P o f a series of highly compres- 

 Kuti Yangti. sec j fl ex ures of carboniferous rocks ; the lower 



carboniferous red Crinoid limestone (7) shows in strong contrast 

 to the neighbouring white quartzite. It forms a band of dull brownish- 

 red, which may be traced from near the Lankpya Lek to some miles 

 east of the Lebung pass, always keeping on the north-east slope of 

 the range. It might in most places be taken as being intercalated 

 between the beds of the white quartzite (8), but forms in reality a 

 more or less compressed anticlinal (see fig. 25). 



In one of the synclinals of the white quartzite (8) members of the 



Folds with permo- permo-trias are preserved. The trough runs 

 trlas# along the Kuti Yangti valley, where I traced it 



on the right side of the valley, from near the Wilsha camping-grounds 

 to RaraT>, where it crosses the valley and is seen on the south-west 

 slopes of the range, which forms the left side of the Kuti Yangti valley 

 along the greater length of its course. It is rather a system of closely 

 laid folds than one synclinal, but the distribution of the various 

 divisions of the inclosed permo-trias could not be shown in a small 

 scale map. It seems at first sight to be an alternation of permian 

 Productus shales (9) with the overlying Otoceras beds (10). The 

 section 3, pi. 8, crosses this synclinal strip about 2 miles south of the 

 Wilsha camping-ground. 



East of it I entered a very disturbed and difficult tract of country, 

 chiefly made up of palaeozoic rocks. Several of the carboniferous 

 white quartzite (8) folds with inclosed Productus shales (9), and re- 

 mains of Otoceras beds (10), are seen in perfect profile along the 

 steep scarp which forms the left side of the upper Kuti Yangti river, 



( 183 ) 



