86 BLANFORD: GEOLOGY OP WESTERN SIND. 



are very regularly and evenly stratified. Towards the higher Khirthar 

 ranges they dip steadily to the eastward at considerable angles, but fur- 

 ther east they roll over more than once, and are much contorted and 

 crushed. The . massive sandstones of the upper Nari group are much 

 less disturbed; they forma simple synclinal on the hill-sides above the 

 contorted shales ; then they turn over to the eastward in a low anti- 

 clinal, and dip at an angle of 10° to 15° for some miles till they dis- 

 appear beneath the Gaj beds. With these massive sandstones some shales 

 are associated, and the sandstone beds occasionally contain nodules of 

 clay and ferruginous concretions. 



Amongst the higher ranges around Dodo-jo-kacha, near the head of 



Lower Nari limestone ^ ne Kiipri and Burri streams, the lowest bed of 



on higher ranges. Nari limestone often covers large portions of the 



surface, as around Dharyaro. The Nari bed is often but two or three 



feet thick, so thin that it is cut through by every petty stream course. 



The shales at the base of the Nari group which are so thick on the 



Kiipri Nai diminish considerably in thickness on 

 Nari heels on Sur stream. ' ' f ' " 



the Sur, the next stream to the southward, and are 

 no thicker than they are farther to the north. 



Near the head of the Sur, at Mutrani, there is a warm spring,- — tem- 

 perature 83.° The water issues in Nari beds. On 



Hot springs. ' 



the next stream to the south (all these streams unite 

 to form the Salari), the Shikani, there is another spring, but it is cold. 

 There is a copious hot-spring on the main or southern branch of the 

 Salari, but it was not visited. The waters of this spring ceased to flow 

 for three years after an earthquake in 1871, but subsequently re-appeared 

 in greater quantity than before. 1 



The Nari and Gaj beds on the Salari and its tributaries present 



Nari, Gaj, and Man- no peculiarities. The conglomerate at the top 



chharbeds on Salari Nai. f tne Manchhar group is found on the Burri Nai, 



but disappears on the Salari and Maki. It re-appears further south 



near the Gaj river. 



1 I am indebted to Mr. H. E. Watson, of the Sind Commission, for this information. ■ 



( 86 ) 



