lO-Z 
DIENER : TRIAS OF niE HIMALAYAS. 
Fig. 9. — Section between the edge of th< Sliiil<li'il cliff and (he ivatershed along the 
route from Shulshid K. (i. lu ( hota Hoti. 
7. iSpiti shales. 
la. Main layer of Belnemnites Gerardi. 
0. Siilcacutus beds. 
5. Yellow-grey, earthy limestones and marls with Rhynclwnella sp. 
4. Yellow-grey, thin-bedded limestone with bivalves. 
3. Lithodendi-on limestone. 
2. Thin-bedded bivalve limestone. 
1 . Well-bedded limestone lithologically identical with the Upper Triassic 
Megalodon limestone. 
The second section between Chidamu E. G. and Kiangur E. G. is dis- 
tinguished from the preceding one only by the absence of the Lithoden- 
dron limestone No. 3. The fossils collected from the bivalve limestone 
No. 2 are of a rather indifferent habit, but rhaetic types are certainly 
absent, as has been stated by Bittner, our late authority on Alpine 
Triassic lamellibranchs. 
Thus the beds capping the limestone No. 1 are certainly 
younger than Triassic, but whether they should be included in the 
Lias or Oolite, could not be decided. 
Below the bivalve limestone No. 2 there still remains a limestone 
mass of approximately 1,800 to 2,000 feet in thickness, the lower portion 
of which certainly belongs to the Upper Trias. But from what we know 
of Spiti, it is hardly possible that the entire mass is of Triassic age. 
In Griesbach's section of the Shalshal cliff ,^ Belemnites sp. is mentioned 
from bed 28, that is 189 feet below the base of the Spiti shales. This 
discovery cannot be overlooked, although the specimen has been ap- 
parently lost. 
1 C. L. Griesbach, Mem., Geol. Surv. of India, 1. c., p. 139 (Geology of the Central 
Uinialayas). 
( 303 ) 
