PART 4 .] 
Racket: Useful Minerals of the Arvali Region. 
243 
Karkoli. This block of limcstoiio has been derived from the limestone range to 
the north near Poni; hut the entire drainage area within -which it lies is 
composed of Siwalik sandstones, and it must have crossed the present waterslied 
before the excavation of the existing valley. The Chinfib here debouches from its 
rocky gorge into the more open valley belo-w Bidsi, and flows through a vcT’y 
thick coarse boulder dejiosit, 4 miles broad and 8 miles in length, measured along 
the river, which deposits tail off, and rapidly diminish as wo recede from the 
river, and are in my opinion largely composed of the rc-an-anged glacial materials 
which must have filled the Chinab valley at no remote date, and I refer the lime¬ 
stone block near Bardol to the same agency and period as that to which I attri¬ 
bute the erratic block previously mentioned as lying on the top of a thick river 
gi-avel near Bidsi. At Bardol, however, the block in question has subsided into 
the valley by the removal, by denudation, of the looser materials whereon it rested ; 
whereas near Bidsi the other block is still resting in nearly its original position, 
on the undisturbed gravel at a high level above the river. No doubt numerous 
similar cases occur ; but this one may bo particulai’iscd, as there is no ambiguity 
regarding its position and relations. 
UsEJUL Minerals of the Arvali Region hy C. A. Hacket, Geological Survey of 
India. 
Although the Arvali region does not abound in mineral wealth, still it 
contains several extensive mines from which, in bygone times, largo quantities 
of copper and lead ores have been extracted, and a number of small pits or 
burrows where ores in small quantities were found. 
None of these mines were worked deeper than a few feet below the water 
level on account of the difficulty of raising the water. In some cases, however, 
when the mine is situated on a hill, an adit level has boon driven into the hill 
to drain the workings and out the veins at a lower level in hope of finding richer 
deposits ; but I believe, both in the case at Ajmcre and Daribo, these hopes were 
not realised. 
All these mines, with the exception of those worked for iron, arc now aban¬ 
doned, and the workings filled with water or fallen together, and so little is now 
soon that it is impossible to form an opinion of their value. 
The ore occurs either in small discontinuous veins or thinly disseminated 
through the rocks. In no case is there anything like a continuous vein or lode 
exposed. 
The following is a list of the minerals, and the localities where found :— 
Copper. 
Atlas sheet. 
No. 
49 
50 
50 
50 
k.ingliaiia ... 1 Sliaikliawati, Jeypore 
Klietn ... ... I 
Diiribo ... ... South of Kho, Ulwar 
„ in the ridge la miles to the west 
Bliangarh 
Ulwar 
