GEOLOGY. 
41 
Afterwards I went south of the camp, where on onr road westward 1 I got a section like 
that of a Megalodon. The limestone is mostly dolomitic, white or light grey, and less 
Mtuminons than (*). I got crinoid stems in it, and a small JPecten; I could not say whether 
lower trias or carboniferous. 
May 6th , Kanshubar (same camp as on April 2nd ).—Two and a half miles from Aktash, 
at a spot where the stream from the Nezatash pass is joined by another flowing from, 
the south-east, there is a mass of greenstone in the shales, and east of that mass the shales 
are very much altered, evidently indicating that the outburst of the greenstone must have 
taken place after the deposition of the triassic shales. Looking north, the shales continue 
for about a couple of miles, composing the hills, which rise to about 3,000 feet above the valley. 
To the north-west is a great mass of greenstone again, while a sharp ridge of limestone runs 
through the shales, coming from the west, and disappearing and broken up towards the east. 
Eurther on, the shales are seen to be overlain by reddish sandstones and shales, towards the top 
much alternating with greenish-grey beds; and this series is again capped by a light-brownish 
rock of inconsiderable thickness. These last rocks and the limestones dip north by east, but 
the crumbling shales are very much contorted, mostly by the greenstone. 
The section from Aktash to the north is something like this :— 
Aktash. 
3a. Limestone (g). Triassic. 
4. Carboniferous limestones (|3 and y). 
3, Greenstone. 
Sketch section of the rocks north of Aktash. 
Proceeding towards the Nezatash pass, I found in the limestone (e) dark beds full of 
Halohia Lomelli ?, and I also noticed the Hhynclionella limestone, which is very earthy and 
brown, in situ in the shales. In the limestone (f) JPhynchonellce are very rare, or, at least, very 
difficult to observe. The limestone (e) is, however, always very much less bituminous than 
(y), and usually darker, and weathers out in flakes, which peel off the surface, while (y) is 
usually massive. Limestone if) forms the Nezatash pass in a ridge crossing the pass, but 
the passage itself is in shales, which are also seen in a kind of basin east of the pass, the 
basin being quite encircled by very high cliffs of limestone (=). Crossing into the stream, 
which comes from the south, and combines with that flowing eastward from the pass, I 
observed a number of pelecypod sections in the limestone, which appear to belong to Megalo¬ 
don. They were rather large, but otherwise not distinguishable. 
Eurther on, the shales were several times crossed by greenstone, and then followed the 
bedded grey rock. The carboniferous limestone ridge runs from Aktash almost due eastward, 
and about 5 miles before reaching Kanshubar it turns gradually to south-east, still retaining 
its great height. 
[Eroxn Kanshubar the return route to Yarkand via Ighiz Yar was over ground previously 
traversed, and the geological notes have already been incorporated with those of the journey 
westward.] 
U Gravel. 
s. Reddish and greenish sandstones, &c. 
3. Shales ( 3 ) Triassic. 
1 See notes for April 3rd, p. 38. 
I 
