SHEKH BID1N HILLS. 81 



The annexed diagram may assist in the comprehension of the way in 

 Diagram. 



which the rocks here are arranged. The outlines 



approaching an observer are drawn thicker than 

 those more distant ; the figures are the same as in the section across the 

 hill, previously given ; lines of fracture are marked with the letter F, and 

 the large surfaces upon which the limestone (sectional) character is omitted 

 are convex towards the spectator. 



Round the eastern margin of the Jurassic limestones in the valley of 



Supra-jurassic sand- the Khavuri tanga, the sandstones between these 

 stone to east. bedg ^ ^ S i wal ik group are ag well exposed 



perhaps as anywhere else about the hill. Due east of the point where 

 the Paniala road crosses the bluffs, in the valley far below, they 

 are quite vertical, adjoining the dark uppermost Jurassic band on 

 one side and soft Siwalik sandstones upon the other, and they contain 

 two small conglomeratic bands enclosing pebbles of alveolina-limestone. 

 A little way along the strike, up the course of the algad, they appear 

 to have gained in thickness, and dip with the curving beds of the anti- 

 clinal at a lower angle, the contact with the beds adjoining taking place 

 thus — 



SiWAllK ... 4. Gray soft sandstone with scattered pebbles : part 



of a great thickness of similar rocks. ? 



3. Soft whitish sandstone alternating with gray and 

 dark-brown rusty clays and conglomerate lay- / 

 Supea-Jtjeassic J ers below. One minute Terebratula found. > 120 feet. 

 12. Black sandy earthy zone with Belemnites ; a I 

 few rusty layers : — 50 feet, and less. 

 Jurassic ... 1. Hard thm-bedded limestone with thin shale 



partings ; Rhynchonella, Gervillia, and 

 large Belemnites in topmost layer. Upper 

 part of the Jurassic limestones. Thick. 



The conglomeratic bands do not appear to be everywhere present in 

 the sandstone No. 3, but were distinctly seen just above the black zone 

 No. 2, where the rocks are tilted upon edge near this. 



Further on towards the axis of the anticlinal the soft white sandstone 

 zone seems even thicker, still overlying the dark earthy band, but being 



( 291 ) 



F 



