2l6 MIDDLEMISS: GEOLOGY OF HAZARA AND BLACK MOUNTAIN. 



The continuation of the Mukhinyal and Tal- 

 har band of Jurassics is seen near Khoorum 

 at the south-west extremity of the map. The 

 section there is — 



(i) Grey slightly concretionary Nummulitic lime- 

 stone. 



(2) Thin-bedded shaley grey limestone . 50 feet. 



(3) Dark rusty-yellow sandy limestone with 

 a few imperfect shells . . .15,, 



(4) Pale and dark chrome well-bedded sandy 

 limestones full of fossils, chiefly Tri- 

 gonise . . • . . . 30 ,, 



(5) Gieumal sandstone . . . 5 „ 

 (ground covered by debris). 



(6) Ochre and rusty-brown also grey dappled 

 with chrome-coloured limestones with 



^ lines of comminuted shells . . 100 „ 



CO 



■S° The beds No. (6) in this section and like- 

 wise No. 7, in the section at Sha-ala-Ditta 

 may either be Jurassic, or, as is not improb- 

 able, Triassic. In the latter case the complete 

 absence of Spiti shales and all trace of un- 

 conformability may suggest a passage here 

 between Trias and Jurassic. 



Wynne in his map inserts a band of Jura- 

 Triassic rocks to the south of the little gap 

 on the wordTurmukki. I was unable to find 

 any sign of this, only a trace of Kuldana 

 rocks there and a small outcrop of Jurassics 

 east of Toong, 3,629 feet. 



Near Khoorum and Shah-ki-Dheri the level 

 of the country has sunk to very insignifi- 

 cant heights, and the parallel gentle folds of 

 the Nummulitic limestone have become smaller and more and more 

 insignificant as the Margalla pass is reached. 



At that place there is but one single scarp for the trunk road to 

 surmount, so that the term " pass ;> must be understood more in a 

 ( 216 ) 



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