46 
[VOL. XTII. 
Reconh of the Geological Survey of India. 
lowei' limestones nearer and at the village. The limestones seem here to form 
an anticlinal, overlaid again to the south by the colored slates, with one thick 
band of soft and dark colored shales, containing large feiTuginous concretions. 
Higher up the Kangi stream, wo find the slates extending as far as the village 
of Ampaltan, where we find them gradually succeeded by blue limestones, and 
these again by buff dolomites. These dolomites continue in a rolhng series 
across the Kangi-La to the Silurian slates of Eundum, where they were colored 
in an unpublished map of Stoliczka’s as Trias. This section is not veiy clear; 
the beds on the north are, I think, certainly the Lilang, and the southern dolomite 
the Pai-a limestone ; if this be so and the section coiTect, the intermediate slates 
must also bo part of the Trias ; they resemble the similarly placed rocks of Tilel. 
The thin band of black crumbly shales at Kangi with concretions makes a 
curious approach in mineralogical structure to the Spiti shales as described by 
Stoliezka : the other rocks do not, however, agree -with the other Spiti Jurassics. 
It may be noticed that at and below the village of Kangi, there occur in the 
bed of the stream numerous pebbles of a crystalline trap, with a rust colored 
weathering ; these pebbles have been derived from a mass of trap occurring on 
snowy peaks, D 24 and D 25, to the eastward, to which I shall have occasion to 
refer subsequently. 
Eeturning to the Shargol Carboniferous shales, we find them continued, as 
we have seen from Dr. Stoliczka’s notes, to the eastward along the line of the 
Kashmir and Ladak road : north of Karbu a few small patches of Triassic slates 
and limestones are found resting on the shales, and the latter are a good deal 
mixed with the Tertiary serpentine trap, especially near the nummulitic zone : these 
shales were traced by Stoliezka and myself, as noticed above, to Lama-Yuru. 
Crossing the sti'eam at Karbu and proceeding in a north-easterly direction, we 
find the Carboniferous shales underlaid by slaty rocks, green, red, and black in 
color, which foi-m the summit of the ridge on which Kindam station is situated. 
Among these lower slates Dr. Stoliezka' recognised the green (Silurian) rock of 
Dras ; these slates are much mixed up with the serpentine trap. At Lama-Yuru 
the Carboniferous shales are underlaid by the same slate series as occurs near 
Karbu, and some bods of sandstone, with a south-westerly dip. The same slate 
rocks mixed with ribband jaspidoous rocks like those between Tilel and Dras, 
and mth the slaty sandy (trappoid of Stoliezka) rocks of the Dras river and the 
Pangong lake, occur in a descending series in the gorge leading from Lama- 
Yuru to the Indus. These rocks are, however, so intimately mixed up with the 
Tertiary ti-ap, that it is exceedingly difficult to map them with any accuracy. 
To the eastward I have traced these slaty rocks to the village of Wanla, where 
they again underlie the Shargol Carboniferous rocks. Dr. Stoliezka says' that 
the colored shales and slates underlying the brown carbonaceous (Carboniferous) 
shales of Lama-Yuru are the representatives of his Mfith and Bhabeh series 
(upper and lower Silurian) : he further thinks there are traces of syenite 
(central gneiss(?) ) underlying these slates, though I did not observe them 
myself. Hear the Indus the Silurian slates are cut off by the Tertiary trap. 
Prom the mineralogical composition of the rocks in the Lama-Yuru gorge, they 
Geology, Yarkand Mission, p. 13. 
