122 BLANF0RD : GEOLOGY OF WESTERN SIKD. 



CHAPTER VII,— THE LAKI RANGE, INCLUDING THE BHAGOTHORO, DHA* 

 RAN, TIYUN, MERI, LOHI, DAPHRO, ERI, AND SURJANA HILLS, TOGETHER 

 WITH THE COUNTRY BETWEEN THE RANGE AND THE INDUS, THE 

 HYDERABAD HILLS, AND THE TRACT OF HILLY COUNTRY NEAR JHL 

 RAK AND TATTA. 



A much larger and more important area will be described in this 

 Area described in this chapter than in the last, for all the exposures in 

 chapter. Sind of beds lower than the Khirthar nummulitic 



limestone and -its associated beds are comprised within the tract herein 

 discussed. The sections of the Laki range are of remarkable interest, 

 as they comprise, besides the Ranikot beds, a representative of the Deccan 

 trap, and two or three very interesting groups below the trap, the lowest 

 being clearly of cretaceous age, and the upper either very high cretaceous, 

 or intermediate between cretaceous and tertiary. 



The area includes, in the first place, the whole of the range known 

 under a multiplicity of names, but collectively termed the Laki range,' 

 extending from just south of Sehwan to the Surjana and Sor Hills ; 

 secondly, the tract of hilly country between the Laki range and the 

 Indus, the detached hills of Hyderabad east of the river, the expanse 

 of lower tertiary rocks between Jhirak, Jungshahi, and Tatta, and the 

 isolated rises in the alluvial area near the last-named town. 



The Laki range is one of the usual anticlinals, much complicated, 

 however, by faults and supplementary foldings, 

 and composed in places of several parallel ridges 



1 The frontispiece to this Report represents the northern extremity of the Laki range as 

 seen from the Indus near Sehwan, and is copied from a drawing by my colleague, Mr. A. B. 

 Wynne, to whom I am indebted for the opportunity of illustrating the present memoir 

 by a view of one of the most interesting localities in Sind. The original sketch having 

 been taken at sunset, only the outlines of the hills are shown. The ridge in front of 

 the others is that of Bhagothoro, and the anticlinal axis forming the ridge is shown by 

 the slopes, corresponding to the dips of beds, on each side. The high peaks behind to 

 the right are those of the Tiyun range, composed of Khirthar limestone dipping westward, 

 or toward the right hand ; they are very craggy and irregular in outline. Behind 

 Bhagothoro is seen another portion of the Tiyiin range, and the distant hills to the left 

 are those near Jakhmari. 



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