IRON OEES or KUNJAMULLAY. 159 



The annexed sketch section across the summit ridge of Kunjamul- 

 lay will explain the relative position of the beds^ and of the synclinal 

 axis showing its parallelism to the axis of the mountain ridge^ and clearly 

 illustrating the immense amount of denudation which has taken place. 

 The relation of the whole mass to the rocks lying to the north, west, and 

 south, has yet to be worked out, but the structure is due to a modification 

 of a part of one of the great foldings of the gneiss-rock region. 



A similar, but in some respects more perfect, example of an elevated 

 basin formed by the denudation laterally of a synclinal fold, having its 

 depression nearly in the axial-line of the ridge, is observable in Mulliakerra 

 hill, in the Ahtoor Taluq. Here the ellipse is much less elongated, and 

 its sides have not been so tremendously cut away ; but the great iron beds 

 are wanting, and consequently the curving of the beds is much less 

 easily traceable.'^" The actual elevation of the whole mass is also 

 greatly inferior to that of KunjamuUay. 



Unfortunately, in both cases the surrounding country is much covered 

 up by thick accumulations of soil, so that the relation of the rocks can- 

 not be fully observed on all sides. It is, however, most distinctly to be 

 seen in the one case at the north-east end of Kunjamiillay, where the 

 Chinna (little) KunjamuUay forms the diverging bed, and in the other 

 case at the south-east end of Mulliakerra hill,t where the beds, (follow- 

 ing them in an easterly direction,) instead of curving north-east towards 

 the village of Chokalaveram, pass under the bund of a large tank, and 

 re-appear, apparently, on the north face of Meckalupoor hill. 



There are three principal beds of the magnetic iron ore, of whose 

 continuity all through the basin there can be no doubt, although they 

 are here and there covered up by debris; besides these, two others 



* There is one small bed of ratlier poor iron ore on Mulliakerra liiU, wliieli might be 

 very easily overlooked, as it is almost entirely covered up by debris from overlyiag horn- 

 blendic beds. 



t Locally known as the Permalmullay ; bixt there are several other lulls bearing the 

 same name in the Ahtoor TalAq. 



( 381 ) 



