DETAILED DESCRIPTION OF THE AREA. 



167 



of lower triassic age was discovered. This again is not a single block 

 but an accumulation of large sized blocks. 



Fig. 4. Exotic block 20 from North. 



The collections referred to were made from the small peak seen to 

 the left on the above woodcut. 



This small peak consists of rather thin beds, dipping approximately 

 8o° south-east and striking south-west to north-east. The limestone 

 is chiefly red with subordinate grey layers. It rests on green andesites 

 and volcanic breccias. 



To the east the block borders on the black shales (4^) which 

 compose the boundary range to a short distance beyond the Kiogarh- 

 Chirchun pass. Thin-bedded distorted brown" limestones of the 

 upper flysch (4^) crop out from the debris slope south of the E. 

 B. ; but I could not determine whether these represent another 

 block or not. Debris of red limestone connects the small block I have 

 just described with similar limestones capping the boundary range 

 further west, which are also underlaid by igneous rocks. This latter 



( 4i ) 



