28 WYNNE: GEOLOGY OF THE SALT EANGE IN THE PUNJAB. 



Range, but he had opportunities of seeing parts of it, particularly the 

 Jaba petroleum springs, at the west end and northern side of the range. 

 The structural geology of these oil localities are treated at length in 

 his report, to which sections and small maps are appended.* 



In a subsequent paperf the same author makes several allusions to 

 the physical geology of the range and of the neighbouring country, and 

 mentions also the useful minerals. 



Among the appendices to the Annual Report of the Customs Depart- 

 ment for the official year 1S69-70, is a report by 

 H. Warth, 1871. ^ J ^ r J 



Dr. "Warth upon the Mayo Salt Mines region at 



Kheura,J one of the most important of the Salt Range mining localities. 



The report gives a very detailed description, first, of the geology of 

 the environs ; secondly, of the hill in which the salt mines are situated ; 

 it then treats of the mines, their present and future mode of working ; 

 and concludes with chemical analyses of the salt.§ Vertical sections are 

 also given shewing the arrangement of the strata and position of the 

 mines in profile. 



The author divides the rocks into two main groups, the " sandstone'^ 

 and " salt^^ formations, these being again sub-divided into seven smaller 

 divisions. |1 



Living upon the spot and with many opportunities of acquainting 

 himself with details, Dr. Warth has left little unsaid about the locality. 



* General Report on the Punjab Oil Lands, by Benj. S. Lyman, Government Press, 

 Lahore. 1870, p. 38, &c. 



t Topography of the Pmijab Oil Regions, by the same author. Trans. Amer. Phil- 

 Society, Vol. XV, 1872. 



J Report on the Administration of the Inland Customs Department for the official 

 year 1869-70. Appendix H, by Dr. H. Warth, Chemical Analyst, Inland Customs Depart- 

 ment, since appointed Collector of the Salt Range District. 



§ From Mr. M. Hickie's pamphlet on Customs ; also analyses, by Cornelius Hiekie, Esq., 

 Chemical Analyst, Agra. 



II The following is the list which is given of all the strata, from above downwards, 



by Dr. Warth :— 



, Thickness. Average. 



Recent formation. — Debris of Gypsxxm, &c. ,.. 100' — 200 150' 



Limestone formation, — Nummulitic limestone ... 200 



( 28 ) 



