PART 4.] 
Ball: MaJiaiiadi basin and Us vicinity. 
185 
At the south-west corner of the district I traversed a section of these rocks between 
Eisgaon and Arnar, hut failed to make out any regular sequence. Ordinary and porphyritic 
granites, together with some dioritic rocks, alternate, and it is just possible strike north and 
south with the hill ridges ; but there is no distinct foliation or bedding. At Soblia there is a 
strong north and south ridge, formed of massive granitic porphyry, which is flanked by a 
dioritic rock on the east. Bocks of this character continue to Borgaon and Puljir, often 
forming bosses. 
The nature of the granite-quartzite boundary has already been described on a previous 
page. 
An extensive group of hills to the south of Nowagarh town consist chiefly also of 
ordinary and porphyritic granites, which are quite massive and without a trace of foliation. 
In the Pairi Biver, between Badomar and the quartzite boundary, there is a long section, in 
which the principal rock is a massive porphyritic granite, with pink felspar. Towards the 
north-west corner of the plateau the character of the boundary changes, as already mentioned, 
the granites running up to an elevation occasionally of as much as 900 feet, c.g., in the 
Maliva hill, before they are capped by quartzites. 
The Lohari hill to the west of Maliva is formed of granites in some variety, many of 
them being remarkably handsome rocks. One form, which contains both pinlc and white 
felspars, includes also epidote and a chloritic mineral; another, which is altogether white, 
becomes locally pegmatitic, owing to the absence of mica. 
Towards Paragaon, further west, these rocks form groups of grotesque-looking bosses 
and tors. Beyond these again granites are traceable for some miles down the valley of 
the Pairi, where they occur at the bases of the small plateaus of quartzite and in the lateral 
valleys. Half way between Bourka and Kukda they are covered up and concealed by these 
younger rocks, and do not appear again in the country to the west for many miles. 
Area West op the Baiptjr Basin. —West of a ridge of pseudomorpliic'quartz, which 
crosses the Raipur and Nagpur road at Waraliand, there is a zone of crystalline rocks, 
which extends up to a point two or three miles west of Gortalou, where the above-mentioned 
Sakoli beds come in, The principal rocks of this zone are massive granites, which form, more 
especially near Chicholi, numerous bosses and tors. These granites are traversed by a series 
of more or less parallel runs of pseudomorpliic quartz, two of which, and not improbably 
all, partake of the nature of lodes. The galena lode in the one, four miles to the west of 
Chicholi, has already been described by Mr. Blanford. This is, I believe, the only locality in 
India where fluor spar is known to occur. At the time of my visit I could see no traces 
of galena, the exposed portions having been, I was told, removed by stone-breakers, who were 
making road metal; but both in that lode and one north of the bungalow at Waraband I 
found traces of the copper carbonates. 
Towards Bandara, and thence to Nagpur, metamorphic rocks, gneisses, and schists are 
again seen at intervals; but the rocks in the vicinity of the road are, for the most part, 
concealed by alluvium. 
APPENDIX. 
List of payers by the. Geological Survey having reference to the geology of this area. 
Coal-fields. 
Talehir (Blauford and Theobald) : Memoirs, Yol. I, p. 34. 
Cuttack, coal and iron of (Oldham): „ „ p. 1. 
Orissa coal-fields (Ball): Beport to Government, 1876. 
