180 KRAFFT: EXOTIC BLOCKS OF MALLA jOHAR. 



(/) Block composing Peak Chirchun No. i ' rich in permo- 

 carboniferous fossils. According to Diener it is difficult 

 to say whether the block actually comes into contact with 

 the Spiti shales or with " the intrusive rocks and their 

 tufa " only, the two being mixed up together. The in- 

 trusive character of the igneous rocks is said to be 

 proved by the existence of a vein, running up the side of 

 the block. The crown of the latter is composed of 

 igneous rocks. The latter " penetrate in succession the 

 Spiti shales and the block in question." According to 

 Diener, no distinct stratification is seen, whereas 

 Griesbach recognised (Records I. c, p. 23) an almost 

 horizontal stratification. 

 (g) A block immediately to the east of Chirchun No. 1, about 

 130 feet high, of conical shape, resembling lithologically 

 the dachsteinkalk. 2 This block is surrounded to the 

 north-west and south by " intrusive rocks ". The eastern 

 slope was not visited. 

 (h) A long ridge, 3 forming a continuation of Chirchun No. 1, 

 towards north-east and north, is capped by masses of 

 limestone similar in appearance to the block of Chirchun 

 No. 1 . The strike gradually passes from north-east to 

 north. These limestone masses, mapped by Diener as one 

 lenticular block (permo-carboniferous), were not examined 

 in detail. 

 This central row describes a flat semicircle with its convexity 



towards south-east. 



3. The southern row, considerably shorter than the central one, is 



made up of three small blocks to the west and north of Lochambel-ki- 



1 Copied from Mr. Griesbach's map. 



2 Copied from Prof. Diener. Griesbach shows this block one mile north-north- 

 east of Chirchun No. 1. This block and a block two miles north of Lochambel-ki- 

 chak E.G., also dachsteinkalk were coloured with the same tint as the grey 

 dolomitic limestone blocks of Johar. Whether the rock is the same or not I am 

 of course unable to decide. 



8 Copied from Griesbach. 



( 54 ) 



