22 
Records of the Geological Survey of India. [voL. xn. 
however, exposed in the Gadasir stream are the dolomites and limestones, and 
not the underlying slates seen in the Lahani stream. 
It will, I think, be evident from this section that the last-mentioned dolomites 
and limestones must be the representatives of the pure white triassic dolomites 
which occur further to the east; it is, however, not quite clear whether the brown 
slates in the Lahani valley belong to the carboniferous or to the triassic scries; 
as, ho-wever, dolomitic limestones and a whitish calcareous slate occur below these 
brown slates, and as the thickness of the carboniferous limestones, north of the 
Lahani stream, is about equal to that which occuns more to the eastward, I have 
thought it probable that the slates near the Lahani stream and the overlying 
dolomites and limestones all belong to the triassic series, and I have accordingly 
so colored them in the map. The slates which occur in the middle of the lime¬ 
stones not improbably indicate that we have here a littoral deposit in a subsiding 
area, and that as subsidence went on more rapidly, limestones were again thrown 
down over the slates. 
As the triassic series has not in this place the homogeneous structure which 
is so characteristic of it, further to the eastward, the general appearance of the 
rocks is very different; they do not weather out into the craggy peaks like those 
of Amrnath and Dras, but into parallel hollows and ridges, accordingly as the 
harder or softer beds are more prevalent: in this respect resembling the triassic 
series at Sonamarg, as described in my last paper. 
Eeverting now to our section, we find on the left bank of the Gadasir stream, 
tall cliffs composed of the amygdaloidnl rocks of the Plr Panjal series, which 1 
have traced to the south-east into similar rocks forming Shalian ridge, which 
were described in my last paper; to the north-west these rocks continue on 
tow'ards Gurais, where I shall have again to refer to them. The boundai-y 
between the triassic and silurian rocks continues up the Gadasir stream, and by 
the two small lakes called Kishan-Sar at the head of the Raman stream, and 
thence again down the Richinai stream, till it reaches Thajw'az, where it was 
described in my last paper. TVhite dolomitic limestones are most prevalent at 
Rishan-Sar, but towards Thajw'az blue bmestones with slates are more jrrev'alent; 
corals and erfinords are extremely abundant in the dolomrtic limestones near the 
head of the Gadasir stream, the rocks at this place havrng evrdently once foraned 
part of an old coral reef. 
For some w ay down the Gadasir str'eam, the junction betw’een the slate and 
limestone series is a faulted one; this is rendered evident by the fact that the 
higher dolomitic limestones in the Gadasir valley rest against the nearly vertical 
Silurians, while at Thajwaz the limestones in which Dr. Stoliezka found a 
triassic Ammonite dip towards the older silurians. Lower down the Gadasir 
stream, however, as we shall see at Gurais, the fault dies out, and there is an 
apparently uninterrupted succession from the presumably silurian slates to the 
triassic dolomites. 
As accessoi-y evidence in regard to the Gadasir-Nichinai fault, it may be 
observed that along the W’hole of this junction, a line of springs of extremely pure 
