PART 3.] 
Medlieotl, S/iajmr Coal-field. 
77 
Coal-measures : upper beds. 
The Dolari area. 
In the Tawa under Dolari village there is the fullest section of characteristically 
Motur beds Barakar roclcs within this whole district. The steep narrow 
Lodadeo-Baramdeo ridge has a hack-bone of vein quartz, and 
the sandstone is disguised beyond recognition. In the small stream close under the 
north base of the ridge, thick, soft sandstone and red and green clay have a northerly 
dip of 20°. It would seem, therefore, that the main part of the ridge must bo formed of 
these Motur rocks. In the Tawa, to the north, these same rocks have a low south-westerly 
dip. Below the Karia stream, the dip is 3° to south on both banks of river for half a mile 
and then turns up sharply to a south-easterly dip of 20°, lowering to 10° near the quartz 
vein which crosses the river obliquely to east-30°-south in the direction of Lodadeo. The 
same rocks, with a more easterly dip, appear below the quartz reef up to the trap dike which 
crosses the river to south-35°-west, immediately under the eastern village of Dolari- The 
dike does not disturb the strata, the same strong bed of mixed earthy sandstone appearing 
on its west side, where it rests directly on a bed of coal. 
The change of formations is thus lithologically as abrupt at this spot as it could be; but 
the parallelism of stratification is unbroken. The coal is only seen 
just under the sandstone, the rest of the outcrop being covered up ; 
hut there is room for a large seam. From beneath it there rises a strong bed of white fels- 
pathic sandstone. Immediately under this again coal is seen for a small thickness, the rest 
of the outcrop, full twenty yards wide, being concealed. Below this, for 130 yards, there is 
white sandstone; then again coal. The covered outcrop of this seam is 40 yards wide, in 
which some layers of dark shale can he traced under water, hut there is room for much coal 
in the unseen portions. There is then 50 yards of sandstones, and below it 20 yards of 
covered outcrop with coal at top. This fourth seam is also underlaid by strong white sand¬ 
stone. These 350 yards of section, with an average easterly dip of 12°, represent about 200 
feet of strata, containing what may he four strong seams of coal. I saw nothing to suggest 
that any of the outcrops are due to repetition by faulting. 
There is a marked change in the character of the underlying measures. The thick 
rough white sandstones are replaced by sharply defined hard 
flaggy beds, very fine in texture and of dull greenish-yellow 
shades, more of the Talchir than the Barakar type of rock ; but the alternating shales arc 
copiously carbonaceous, and with some strings and thin beds of bright coal. There is more 
disturbance in these beds, the dip being sometimes as high as 30°, but in the same easterly 
direction. The thickness is about 100 to 150 feet. 
Below these thin measures there is still a descending section for over half a mile to 
Lower beds. where a run of quartz crosses the river from north to south. 
The only rocks seen in this reach are thick sandstones, in com¬ 
position and texture mostly of the Barakar type, though some would pass as Talchir, 
especially the lowest bed adjoining the quartz vein. The intervening earthy beds are com¬ 
pletely covered; I conjecture that they are of Talchir type, not carbonaceous. I have, 
however, coloured the whole as Barakar, not to complicate this small area with boundaries 
of doubtful nature and position, as undoubted coal-measures occur again close by. The 
thickness of these lower beds may be GOO to 700 feet. 
The quartz vein just mentioned occurs on a broken anticlinal axis; the silica simply 
filling the many cracks in the fractured sandstone, some central 
ones being much stronger than the rest. 'The reverse dip is seen 
in the indurated rook forming the reef, below which there is a 
blank of some 300 yards to where sandstone appears in force in the left bank at the con- 
Middle beds. 
The Pliopas 
fault. 
section and 
