RESULTS. 179 



the latter. The occurrence is marked on Dicner's and Griesbach's 

 maps as permo-carboniferous. 1 



2. A central row of much greater extent and containing by far 

 the largest number of isolated blocks, stretching from Peak Kungri- 

 bingri, 19,170', towards the watershed of the Chaldu and Chirchun 

 rivers. 



This row is formed by : — 



(a) A block south of the Kiogarh-Chirchun pass. It was not 

 examined in detail, but appeared to consist of a bright 

 coloured limestone. 3 

 (0) Top of Kungribingri, 19,170', a small block of white 

 limestone resting on greenish Gieumal sandstone, with, 

 out fossils. 3 



(c) A block in the immediate vicinity of Chirchun E. G., in the 



ravine descending from the Kiogarh-Chirchun pass 

 towards the Chirchun river. This block is almost 

 entirely imbedded in Spiti shales.* 



(d) A block near the low pass west of Peak Chirchun No. 1. 



It yielded a few sections of Bryozoa and corals? 



(e) At the same locality also a few blocks with Monophyllites 



and Xenaspis (?) (lower muschelkalk) were observed. 8 

 Blocks (d and e) rest on Spiti shales. 



1 Fossils being wanting, the age of these limestone 1 - is uncertain. I conse- 

 quently marked them as blocks of uncertain age, and the same course was followed 

 in most of the Chirchun blocks, whose age is not established. 



2 According to Diener it is entirely imbedded in Spiti shales, while 

 Mr. Griesbach shows "rhsetic" (middle Jurassic) (?) limestones bordering on it. 

 Griesbach, 1. c , p. 22, remarks there are several blocks in the ravine west of 

 Chirchun E. G. I also noticed them from E. B. 20 (see map). 



3 Copied from Diener, who ascended the Peak. 



4 According to Griesbach's map rhsetic middle Jurassic (?) limestones border 

 on it from south-east. Diener marks another small block near block (c) which 

 does not appear on Griesbach's map. The latter shows instead a patch of igneous 

 rocks overlapping the Spiti shales and fl sch. Copied from Mr. Griesbach's 

 map. 



6 Copied from Diener. Griesbach's map shows this block further south- 

 west than Diener's. 



6 Copied from Diener, not marked by Griesbach- 



{ 53 ) 



