DESCRIPTIVE GEOLOGY: NUMMULITIC ZONE. 20/ 



The section noted in the margin corresponds to that portion of 

 Section from jub to No. 3 from Sujkot to the Hurroh R. Like it, 

 the Hurroh R. a j SOj the line of country follows a transverse 



gorge cut through the Nummulitic limestone for the greater part of 

 the way. Near Jub, the northern boundary fault of the zone divides 

 it sharply as usual from the slates and accompanying limestone 

 bands of the Lunguryal type. The Nummulitic limestones are at first 

 of the nodular or concretionary kind and associated with shales- 

 They are folded in a number of small flexures, and carry with them 

 a disjointed band of the Kuldana red beds. 



Below Riala village, the previously open valley closes in between 



precipitous walls, and the water of the stream drops over smooth 



surfaces of limestone in a series of falls: a journey up or down which 



is beyond the compass of ordinary booted mortals. The falls are 



situated along the north-north-west reach of the stream across the 



line of the ridge from the " P " of Kohala Paeen. (The horizontal 



section just here crosses that ridge.) Below this, the stream vanishes 



down fissures in the limestone, and the rest of the way to the Hurroh 



is along a dry boulder-strewn bed, bereft of its torrent, with a width 



of only a few yards, and with walls of rock rising at angles of 



70 — 8o° from it. This gloomy chasm is only visited by the sun's rays 



occasionally, and one may wander down it in complete ignorance of 



one's whereabouts, for long periods together. The natives say it 



reminds them of Afghanistan. Through the lower part of this gorge 



there is represented a type of the Nummulitic limestone, which has 



hitherto been wanting. The beds become of a dark grey and are 



slightly sandy in places. They are well-bedded and dip the whole 



way north-north-west at extremely steep angles 70 — 8o°. In spite 



of this steepness of the angle of dip along the dry torrent-bed, it is 



plain from occasional glimpses obtained of the hills above, that the 



beds spread out above and lie at a lower angle. The horizontal 



section illustrates this. 



As we near Jiroo on the Hurroh river, well-bedded typical Trias 

 limestone comes in beneath the Nummulitics, but the Jura-Cretaceous 



( 207 ) 



