168 



BLANFORD : GEOLOGY OF WESTERN SIND. 



places into a gritty limestone : near Damb the latter is the prevailing 

 rock. It is dark grey in colour; very hard and compact, and it separates 

 into cuboidal blocks with exfoliating surfaces. Horizontal beds of this 

 limestone, associated with fine sandstone, form a low scarp extending 

 for some miles down the left or east bank of the Thadi water-course 

 which runs past Damb. 



A long inlier of Nari beds, extending some 23 miles from north to 

 south, but only 4 miles from east to west where 

 Thickness of Gaj group broadest near Rahuja, lies nearly due north of 

 Khadeji. At Sawaji, or Shahbazjee Takar (the 

 goshawk's hill ?) , a trigonometrical station about 1 miles north of 

 Khadeji and 1,135 feet above the sea level, the thickness of the Gaj beds 

 was estimated at 800 feet by Mr. Fedden, who considered this the maxi- 

 mum thickness of the group in this neighbourhood. 



Some 12 miles north-by-east from Sawaji and 6 or 7 miles south- 

 east of Thana Shah Beg (Got Sham Shah Beg of 

 map), the Rahiija stream cuts its way from the 

 Nari outlier to the eastward through the narrow ridge of Gaj beds, and 

 about 500 feet of the latter are exposed, the uppermost beds having 

 been removed by denudation. The Nari beds are nearly horizontal to 

 the westward, but they are suddenly bent over sharply to the east and 

 crushed, and the Gaj beds are almost vertical. The relations of the beds 

 are shown in the accompanying sketch section through the " dat " or 

 gorge, There is a crush and some slipping : — 



Rahuji-ka-dat. 



Sketch section through the Rahuji-ka-dat. 



G. Gaj : N. Nari ; ff, crush scarcely amounting to a fault. 



The line of disturbance here shown is probably that to which the 

 appearance of the long Nari inlier should be 

 attributed. The Nari beds have a double fold in 

 ( 168 ) 



Line of disturbance. 



