EASTEUN PLATEAU. 153 



yards overlies the magnesiau group (fig. 21), as already mentioned 



(p. 150). Although greatly broken and displaced, the whole series may 



be traced in these hills, from the red marl up to 



the nummulitic limestone, a small patch of 



which is present. 



On the western side of this outlying portion of the series, a moun- 

 tain stream coinciding nearly with the faulted 



Sucession. , . 



junction of the red marl and overly mg groups 



gives the following succession (see section, fig. 22, PI. XVI) : — 



Fault. 



1. Red salt marl, abnormally placed. 

 4. Magnesian sandstone. 



3. Black shiily band, silurian. 



2. Purple sandstone. 



Fault. 

 Nummulitic limestone, not seen here, but present at a short distance to the east. 



Feet. 

 10. Olive group, sandstones and conglomerate, fossils in lower beds... 220 

 8. Red clays, shales, and flags of the salt-pseudomorph zone ... 100 to 160 



4. Magnesian sandstone, compact and calcareous ... ... 150 to 200 



3. Shaly silurian band ... ... ■■• .•■ 100 



2. Purple sandstone, shaly below ... ... ... 500 



1. Red salt marl ... ... ... ... ... 1,500? 



Boulder zone at foot of hills. 



The red marl on the right-hand bank of this stream again overlies 



newer rocks ; here a portion of the flaggy salt-crystal zone, with much 



crushing and apparent faulting. The purple sandstones on the other 



bank of the stream become light-coloured at top, and the overlying 



silurian shaly band contains interbedded purplish sandstone and greenish 



shaly layers. The magnesian sandstone beds are sometimes very 



compact and of a gray color marked with red, and some of them expose 



on weathered surfaces the strange lenticular sections observed on Mount 



Tilla, the markings in the present case lying at 

 Peculiar markings on 

 surface of magnesian different angles in the matrix, crowded together, 



and having sometimes a length of three inches by 



a quarter of an inch broad : some of the beds are brecciated. 



u ( 15S ) 



