20 
6 Shales thinning out in Massive Sandstone Walloon Beds, Bungeworgorai Creek, Orallo District. 
Photo., A. W. 
1 append two analyses made, by the Government Analyst in Brisbane. One is of the Injune 
coal and the other of the carbonaceous shale associated with it. The latter proves to be an oil 
shale of good quality, which is worthy of note. 
Jan. 3, 1925. Coal from Injune No. 2 shaft No. 450/G.S. 
Specific Gravity. 1 ' 24 . 
Oil yield (by destructive distillation), 40 gallons per ton. 
Proximate Analysis — 
Moisture 
4*1 
Volatile matter 
.. 37*3 
Fixed carbon 
.. 17*0 
Ash 
11-6 
100*0 
Fixed carbon-ratio, 55’ 75. 
— 
. 3, 1925. Shale from Injune, No. 1 
Shaft, No. 451 /G. 
Specific Gravity, 1* 47. 
Oil yield (by destructive 
distillation), 42 ga 
Proximate Analysis — 
Moisture 
2* 5 i 
Volatile matter 
. . 33* 0 
Fixed carbon 
. . 26* 6 
Ash 
. . 37* 9 
100*0 
*» 
B. Structural Geology. 
Practically no detailed geology, which would facilitate the working out of minor structures, 
has been done in this Walloon area, and such work will not, be an easy task. The country consists 
mostly of low, rounded hills and broad depressions, together with extensive plain areas. It is 
covered for the most part with forest and scrub, and in parts of the area, as in the country on 
either side of the railway line between Miles and Juandah, prickly pear has taken such hold as 
to be almost impenetrable except on horseback, and even then the horses suffer badly from the 
spines, which the rider cannot altogether avoid either. Again over wide areas outcrops are scanty 
and uncertain. The beds dip at low angles or are nearly horizontal, and are covered with a mantle 
of soil or sand. Tn spite of all these difficulties I am of opinion that much could be accomplished 
by detailed surveys, and such surveys will be very necessary if satisfactory structures are to be 
defined in this region. With the exception of the prickly pear, similar difficulties have been 
overcome elsewhere, and it is surprising how structures reveal themselves and piece together when 
isolated fragments of a territory, not too far apart, are worked out in accurate detail. Sufficient 
of the area was traversed and sufficient outcrops were observed for me to come to the conclusion 
that both folding and faulting are present in these Walloon strata, and that detailed structural 
mapping can be done in some areas. Some of the folding observed is on too small a scale to be 
considered in connexion with oil supplies, but there are some indications of larger structures in 
