THE KAMPA SYSTEM 
51 
2^ miles above the village, where the sequence is as follows (see 
PI. 10) : 
Sandy and micaceous shale, with flaggy sandstone, and 
a narrow calcareous band near the base ; 
(4) Orbitolites limestone ; 
(3) Shale, variously coloured, ranging from black to greyish, 
with " needle-shales" (" Spondylus shales ") ; 
(2) Soft shaly and nodular limestone, full of foraminifera 
(" Operculina limestone ") ; 
(i) Hard, dark, massive limestone, thin-bedded at base 
(" Gastropod limestone ") ; 
Ferruginous sandstone. 
With the exception of the ferruginous sandstone, each of the 
above horizons is more or less fossiliferous ; but the lowest lime- 
stone (i) is cut through by the stream and that part of the section is 
much obscured. The lower beds, however, are almost invariably 
found capping both the ridges which run from Kampa dzong to 
Tatsang ; on the more southerly of the two they are in normal 
sequence above the Scarp limestone, but on the northern ridge 
they have been thrown above younger beds by an important strike- 
fault, which extends certainly for 20 miles from east to west and 
probably persists for a very much greater distance ; although almost 
coincident with the strike, it appears to draw slightly away from it 
towards the east, and to run rather more to the north of east. 
In the neighbourhood of Tiina exactly similar sections of ihe 
lower part of the Tertiary system are seen throughout the ridges 
between that village and Guru, but only the ferruginous sandstone, 
the lowest limestone and the shaly foraminiferal limestone occur on 
the Tiina ridge. Younger beds would almost certainly be found 
in the higher hills to the west of Guru, but unfortunately these 
could not be visited. The Tiina sections, however, have proved of 
considerable value, for they have furnished fossils from the beds 
immediately above the ferruginous sandstone, and have considerably 
supplemented the collections from the massive limestone of Kampa 
( 172 ) 
E 2 
