PART 2 .] 
Ball: Bisrampur Coal-field. 
35 
Seam. 
The next coal seam exposed is situated slightly south of west of Choura. It is flat, 
and paves the bed of the river; portions are coaly, but the thick- 
Seam. . , , 
ness is not disclosed. 
In the western branch of the Turra called the Gohogor, I saw no traces of coal at the 
junction. But the river has not been examined. 
Sank River Section. —The Bank river rises in the metamorphic hills to the east 
of Bisrampiir, and joins the Mahan north of Bhoja. It first enters the sedimentary rocks 
(Talchirs) near the village of Takia. Thence it proceeds northwards along the eastern 
boundary of the field, bending at one locality into the Barakars, and at another into the 
metamorphics, and for the remainder of its course up to Ghangri, traversing Talchirs. 
In the Bhiti river, which joins it close by, there is a seam of carbonaceous shale which is 
seen at the road-crossing below Bakna. In a stream which joins 
the Bhiti south-east of Balcna, there is another seam containing 
about T 6" inches of coaly shale; tliis is covered by coarse sandstones, the exact position 
of the boundary between which and the slates is hidden. Returning to the Bank, the Tal¬ 
chirs, which occur in the bed of the river north of Ghangri, are gradually covered by pebbly 
Barakar grits. About a mile from the junction, there is a seam 
Seam. containing about 6" of good coal; after this, half a mile further, 
there is a rolling seam which contains 2' 10" of shaly coal; it 
is several times repeated higher up. West-south-west of Abkora, there is a seam which 
is exposed by the deep-cut channel included between massive 
beds of grit. It has a slight inclination to north and a variable 
thickness, the average being about 2' ; it is, like many other of the seams in Sirguja, in all 
probability only a lenticular mass with limited lateral extension. 
For about two miles beyond this only sandstones and grits are exposed. But east of 
Chatasarai there is a seam of shaly coal of which 2' 1" is exposed, 
the base being hidden. The streams which join the Bank in this 
neighbourhood from the east did not, at their mouths and for some distance in, give any 
promise of coal. At the point where the Partabpur and Bisrampiir road crosses the Bank 
there is a seam, with a slight dip to the south-east, which contains 
about 8' of poor flaky coal and carbonaceous shale exposed, the 
base being hidden. In a stream which joins the Bank north of Raima, there is a seam 
containing somewhat similar shales. Nearly north-west of the 
deserted village of Chora, there is another seam with the same 
constituents; of this 2' &' only is exposed. 
For about two and a half miles more the river runs along through a gorge cut in q. p. 
horizontal beds of massive sandstones and pebbly grits. Nearly 
Seam. . . . . 
due east oi Bboja there is a seam oi coal dipping 5 to north, m 
which there is about 1' 8" of coal exposed. 
The remaining tjvo miles or so of the Bank, up to its junction with the Malian, I was 
prevented from examining by an attack of fever. 
Rioted River Section.— In the stream which joins the Mahan south of Kotea, the rocks 
are much covered, especially near Gourd. East of Kotea, there are sandstones ; and close 
to the mouth there is a section of the seam which is seen in the Mahan, vide p. 32. 
Gatphvld River Section. —In the loop-bend of the Galphiila near Bilaro there is a 
^ _ seam containing some coal, about 8' ; of which is seen. In an 
adjoining stream the whole seam, measuring about T, is exposed, 
in which there are seen to be coaly layers mixed np with carbonaceous shales. I do not 
Seam, 
