(j'l WYNNE: TRANS INDUS SALT REGION, KOHAT DISTRICT. 



Iii that country each of the three divisions is separated from the 

 next stage below by marked unconformity, while here no interruption 

 to the most perfectly parallel superposition and sequence has been any- 

 where observed. The lower group, however, or Subathu, would seem to 

 be the same in both countries, its identity being based upon the recogni- 

 tion by Mr. Medlicott himself in the Murree hills and south of Kash- 

 mere of Subathu characters* in the limestones, clays, and shales which are 

 physically part of the i Murree group 9 of the Cis-Indus, Upper Punjab. 

 The upper part of this ' Murree group ' he refers to the Dugshai type 

 of the Subathu rocks.* 



These upper purple and gray 'Murree beds' (or Dugshai rocks) 

 are identical in their general aspect and position with regard to the 

 overlying series with those of the Trans-Indus group herein referred to 

 the same placet (see list of rocks, p. 24) . 



The highest group also possesses characters which go far to link it 

 with the Sivalik series of the Simla region, and, further, a series of fossils 

 derived from beds near the Salt Range, having in places all the appearance 

 of the upper division of this country, were determined by the late 

 Dr. Hugh Falconer as Sivalik. J 



For the intermediate beds, if it were thought advisable to have but 

 two divisions instead of three, they might without impropriety be in- 

 cluded with the upper rather than the lower group. They resemble more 

 or less the descriptions given of the Nahun rocks as recently demarcated 

 by Mr. Theobald (M.S.S.) 



* Memoirs, Geological Survey, Vol. Ill, pp. 89 and 90. The valley containing " brown 

 and variegated nummulitic clays." Tret and Shah Durrah are in Rawal Pindi, not Hazara 

 district. 



f See also Records, Geol. Surv., Ind., Vol. VI, 1873, p. 59 et seq. 



% Paper on the Salt Range, by W. Theobald, Esq., Jour., As. Soc, Beng., No. 7, 

 1854. The late Dr. Falconer, however, made no distinction between the Sivalik and Nahun 

 groups. 



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