82 
Records of the Geological Survey of India, 
[vox. VIII. 
West of the Sviki. 
Tlio north boundary. 
tlie many runs oE vein-quartz observed throughout the district. The conformable succession 
of strata here seems unbroken. There is also little encouragement to adopt the other sup¬ 
position. I would rather connect the want of coal here with the other peculiarities noticed in 
the original characters of this formation in this position. 
In the left hank of the Tawa, on the strike of the ridge of indurated rocks separating 
the Bhoura and Suki streams, there is an excellent section of the 
bottom Motur beds. There are two strong bands of mottled sandy 
clays overlaid by thick sandstones, These latter pass up to form the crest of the ridge 
along the quartz vein. The extension of the Baralcars along tlie base of this steep ridge is 
quite covered up by debris. 
The Sonada abea. 
The point at which the Motur-Barakar boundary crosses the ridge of induration is put 
in inferentially, from the apparent structure, the rocks of the ridge 
being too much disguised for close identification. The position of 
the boundary on the Bhoura Nadi is well defined. In the reach to south-east of Bandabir the 
massive greenish-brown and mottled purple clays of the Motur are in force. A lower baud of 
the same appears near the bend of the river to east-by-south of Sonada. To the west, along 
the flanks of Jamgarh, these bands, if present, are concealed by talus. But I rather think 
they die out to the rise : the sandstone forming the east flanks of the hill are seen to pass 
down into the low ground to the north; at the high level they are porous and conglomeritic, 
while low down they become earthy and fine grained. 
The Barakar beds are fairly exposed for several miles along the Bhoura stream, the 
course of which is very oblique to the strike of the formations. 
The coal-measures. e ,, ■ • 
For this reason and the doubtful accuracy of the map, it is im¬ 
possible to be certain whether two or more of the outcrops may not belong to the same 
seam, or to assign an approximate thickness for this group. It is certain, however, 
that the coal-measure characters are more pronounced than on the Suki. The top rock 
is as usual a very strong white sandstone. Under Sonada, near the top of the long west- 
by-north reach of the river, two poor strings of coal occur in local partings of this rock. 
Above Sonada there is a succession of south-westerly reaches, across the measures, and west- 
nortli-westerly reaches more or less along the strike. At the northerly elhows between tlio 
four first pairs of these reaches coal is seen on the left bank under strong sandstone. The 
first two are, I think, the same seam, and also tlie third and fourth, at a lower horizon. From 
one to two feet of coal is seen in each case; but there is room for more in the concealed 
part of the outcrop. There are besides several bands of covered ground in these sections 
that may contain coal. To the west the whole group passes into the base of the Jamgarh 
range, and is obliquely overlapped by the covering trap which passes across it to rest on the 
Talchirs west of Teter. The first scarp north of Teter is of coarse Barakar sandstone, 
locally altered by the overlying basalt. 
Here again we find an instance of the mutual accommodation that occurs between these 
two groups: as the Barakar type of sandstone, and with it true 
The Talchirs. “ A ° x _ 
coal deposits, increases, the Talclm* stamp of sandstone decreases. I 
have still left a considerable band of these latter within the coal-measures boundary, so as to let 
it correspond with the continuous line iu the Suki area; taking as top of the Talchirs the first 
appearance of the massive, fine, siiicious clays with thin bands of hard compact limestone 
north of Kupa. Beneath this there are still some strong beds of the fine yellowish sand¬ 
stone. The very massive Talehir clay is deeply weathered out in the broken ridge south 
of Teter, showing the quartz veins passing vertically through it. Lower still the boulder 
deposits are splendidly exposed in the eastern scarp of the Kota plateau. 
