HIU,V RANGES AND THEIR NEIGHBOURHOOD FROM BAHADUR KHEL, &C. 163 



section overlying purple clay and sandstone, and succeeded by some of 

 the deep red clays of this older zone, showing that inversion, as so 

 frequently the case, has added to the local complexities, and very pro- 

 bably aided the disturbed and broken rocks in settling into anomalous 

 positions. 



Although the junction beds have here no longer the upper character 



Upper tertiary beds P reviousl y described, that these upper beds occur- 



disappear. e( j a ^ no g rea t distance may be inferred from the 



large proportion of crystalline and granitoid pebbles occurring among 



those of the local rocks in the bed of the iilgud. 



The northern nullah traverses the thick red clay zone beneath the 

 The northern nullah outcro P of tae nummulitic limestone (here rapid- 

 east of Goorooza. iy growing thin) and that of the overlying 

 lower sandstones, these forming the openly undulating south side of 

 the great central synclinal trough. The diminished thickness of the 

 limestone here may be noticed in connexion with the small show it 

 makes among the complicated exposures just now mentioned. 



The summit of the gypsum ridge forms a commanding point of 

 Summit of gypsum observation. To the northwards the tertiary 

 nd s e - sandstones, &c, roll over elevated ground sweep- 



ing downward into the synclinal valley, on the other side of which they 

 are seen to rise again, the widely extended and gently curved surfaces of 

 the naked rocks forming a fine study of contortions. To the eastward 

 these beds curve over the edge of the synclinal and decline gently 

 southwards to the broken and sinuous outcrop of the whole series of 

 groups towards the fault, where the nummulitic limestone only shows 

 itself in the escarpment as a thin and fugitive band, sometimes entirely 

 absent. The red zone and gypsum appear below, but in much less force 

 than near and on the ridge from which the observer is supposed to look, 

 and the dark rock-salt, though not visible from a distance, occurs beneath 

 all, its presence being certified by the inevitable guard tower or boorj 



( 267 ) 



