114 BLANFORD : GEOLOGY OF WESTERN SIND. 



it has a tendency to split into thin flag's ; it exhibits oblique lamination^ 



and it may be the same as a very similar hard band, No. 29, in the Gaj 



section. 1 About 300 feet of beds are seen below it on the eastern scarp 



of the Karo Phang. The grit contains a few Pectens and other fossils, 



mostly fragmentary, and below is a yellowish marly bed with Breyuia 



carinata and a band of large oysters. 



A hot-spring occurs in the Gaj area at a place called Kandhi. The 



temperature is between 85° and 86°, the water is 

 Hot-spring. 



strongly impregnated with lime, and there are 



extensive deposits of calcareous tufa, some of them, as at Pir Gazi, at a 



considerable elevation above the present point of issue. This spring is 



situated in a ravine, but is much choked by detritus, and the flow is small. 2 



The fault above mentioned as cutting off the Manchhar and Gaj 

 Faults east of Nae°-k ^ e( ^ s a ^ the Dase °^ ^ ne Khirthar range can be 

 Vallev - traced for about 16 or 18 miles, running north- 



north-west to south-south-east, and appears to die out at both ends. 

 Farther north there is another fault running north and south for several 

 miles along the base of the Bhit range. This fault, which also appears 

 to die out at both ends, is between Nari and Khirthar beds. The anti- 

 clinal forming the range is much steeper on the eastern side than on 

 the western. 



The Badhra range is another anticlinal of nummulitic limestone, a 



repetition of that of Bhit, but on a larger hori- 

 Badhra range. 



zontal scale, the similarity even extending to the 



termination at the southern extremity in an anticlinal roll, from which 



•higher beds dip on all sides, whilst an axis of Khirthar limestone continues 



to the south-west and joins the main Khirthar range. Between this 



secondary ridge and the southern termination of the main ridge is a 



1 See ante, p. 93. 



2 Mr. Fedden, from whose report the description of the whole Naegh Valley, except the 

 neighbourhood of Pir Gazi, is taken, suggests that all these springs have formerly been 

 much more copious than they now are, and that the present spring is almost exhausted. 

 He heard of an ancient spring, now no longer flowing, in a ravine on the flank of the 

 Bhadra range. The former large supply of water would account for the enormous size of 

 the tufa deposits. 



( 1W ) 



