PART 2 .] 
Ball: Bisrampur Coal-field. 
29 
Near the village of Bhopoli there is seen tire commencement of another bordering strip, 
TileMrs between Bhopoli which is traceable in the bed and neighbourhood of the Banki 
and Bisrampur. river; thence to Bisrampur it is covered and obscured by alluvium ; 
but sufficient is seen to enable two branches of 'fillcltfrs to he traced with approximate 
accuracy, one extending southwards to the Main pat, where it is covered by the upper sand¬ 
stones which underlie the trap, and the other westwards to the Pilka hills, under the sand¬ 
stones forming which it also disappears. 
The first of these branches is between seventeen and eighteen miles long, with an. 
, . average of about three miles in width. On the east the boundary 
Eastern branch. n - 
is throughout, natural, but the western boundary is in part faulted, 
with an inconsiderable throw, against the metamorphics. 
The best section of the rocks in this strip is exposed in the bed of the Goinghatta, 
ti(m between the villages of Pari and Libra, where sandstones, pebble 
and boulder bods, and needle shales, all of typical appearance and 
lithological character, are seen. 
In several of the reaches a peculiar effect is produced by the gneiss boulders, which 
have been washed out of the boulder bed, and are scattered about on the surface, as though 
they had been only just dropped from floating ice. One boulder, still in situ in the bed, 
gave the following dimensions 7' 4" X 6' 8" x 2—97 cubic feet, and I observed several others 
which could not he measured, which were still larger. Further south in the valley of the 
Barnai, where the strip is bounded by two ridges of gneiss hills, the boulder bed, shales and 
sandstones, all occur, hut no clear', consecutive section is exposed. 
The Talchirs which stretch westwards from Bisrampur to the Pilka hills, are faulted 
, , against the metamorphie rocks along the southern boundary 
The line of junction between them and the Barakars on the north, 
is completely hidden by alluvium, but the probabilities are in favor of its also being faulted, 
as west of the hill its continuation certainly is so. 
The Talchirs disappearing under the grits and sandstones of the Pilka hill, re-appear 
on the western side much increased in their lateral dimensions; this is due partly to the origi¬ 
nal divergence of the boundaries, and partly to the effects of a cross-fault, the position of 
which is marked by a ridge of fault-rock at the south-west corner of the hills, and by the 
effects produced by it in the Rrimpur coal-measure area, of which more hereafter. 
Between the hills and the Rehr an irregularly shaped area of quartzites cuts the Talchirs 
Quartzites ’ n f wo parts, running up to both boundaries and being faulted 
against the Barakars. Resting on these quartzites, are three 
small patches of Talchirs, remnants of the rocks which at one time spread all over them. 
An isolated outcrop of these quartzites is exposed in the Goinghatta section, iu which, as well 
as in the Rehr and its tributaries, Talchirs are seen in many broken and detached sections. 
The further extension of the southern fault, westwards from the point where it crosses 
PaMrbulld the -^ e ^ r ’ i s n °t present known. The Talchirs continue to border 
the coal measures to within a mile and a half of Paharbulla, 
where the latter terminate. At Paharbulla the extension of the Talchirs in a southerly direc¬ 
tion is limited by a considerable group of quartzite and slate hills, which will probably prove 
to be bounded on the south by the above-mentioned fault, whose western extension has not 
been yet traced out. 
As stated above, the Talchirs extend far to the west of the Rehr, underlying one or 
more distinct areas of coal measures. The present account is 
Trilclurs west of Rehr. limited to that portion of them bordering the coal-field and east 
of the Rehr. 
