SUMMARY. 279 



A circumstance which is not peculiar to the Salt Range alone may 

 be mentioned in connection with these haematites, namely, that they 

 appear to mark places where some cessation or interruption of deposition 

 took place. For instance, although there is no unconformity strono- 

 enough to be conspicuous at the base of the nummulitic formation, 

 the probably cretaceous rocks beneath are but feebly represented ; and 

 if the presence of the lateritic haematite is indirectly connected with the 

 want of cretaceous deposits, the occurrence of a hsematitic band here and 

 there in these rocks and in the lower groups may represent a greater 

 development of strata on the same horizons in other places. At all 

 events, where some slight appearance of discordance, hardly amountiuo- 

 to unconformity, occurs, between the carboniferous and the succeeding 

 (cretaceous ?) formation at Nursingphoar, and again at the top of the 

 carboniferous beds near Kutta, haematite in the first instance, and with a 

 little white sandstone beneath in the second, is the rock immediately 

 supervening. 



Salt is characteristic of the lowest group, but traces of saline materials 



in the form of efflorescences are to be found in 

 Salt and Gypsum. 



places m every succeedmg zone (except perhaps 



the strong limestone bandsj, and in the newest formation of the whole 



series the sandstones and marls of the tertiary rocks are sometimes 



sufficiently saline to impregnate the water of the streams. Gypsum 



too, occurs in the clays of group No. 5, in those of the trias, and in some 



quantity in the nummulitic coaly band. The presence of lime and 



magnesia dates back to the time of the red salt- 

 Lime and Magnesia. 



marl, and the same substances are found again in 



group No, 4, the magnesian sandstone series; but calcareous and 

 magnesian rocks prevail most largely in the carboniferous, western 

 trias, western Jurassic and tertiary (nummulitic) formations. The hard 

 silicious and aluminous rocks of most palaeozoic formations are but 

 poorly represented, slates and such common accessories as quartz veins 

 being here entirely unknown, notwithstanding the pressure and disturb- 

 ance which the strata have in many places suifered. 



( 279 ) 



