168 
s . 
§ I 
Sandy stale with lines of very large ferrugino-calcarcous nodules m 
upper part and linos of ironstone nodules in lower part. {Glos- 
so;)<em abundant; also a specimen of Pecopteris?)* 
Laminated fireclay (sometimes sandy) . 
Compact fireclay {Phylloikeca abundant) 
Dark stale 
Coal ... 
Grey stale 
Coal . . . 
Hard red ironstone 
Ft. in. 
... 13 
... 2 
... 0 
... 0 
... 3 
0 to 0 
... 0 
0 to 0 
... 0 
2 
0 
8 
2 
6 
1 | 
2 
3 
9 
Coal (bottom not seen) 
Some sandstone beds in the neighbourhood contain silieified logs, and similar logs, 
evidently weathered out of the sandstone, bestrew the surface in the neighbourhood so 
thickly that one might imagine a forest to have been felled on the spot and subseiiuently 
petrified. In travelling from the mine to South Port Cooper I found the country 
similarly strewn with silieified wood as far as Bee Creek. There can be no doubt that 
the coal-measures of this district arc on the horizon of the Upper Bowen Eiver Porma- 
tion. A gratifying and promising circumstance is the absence of intrusive igneous rocks 
from this district. A specimen analysed had a specific gravity of I’SS, and contained 
Water 
Volatile hydrocarbons 
Fixed carbon (firm hard coke) 
Ash (pale brown) 
8-71 
84-74 
3-56 
100-00 
The coal of Walker’s Creek is an anthracite containing a higher percentage of 
fixed carbon and a lower percentage of earthy impurities than any coal of its class 
known in Queensland or New South Wales. It approaches iu composition some of the 
best anthracites of Wales and Pennsylvania. The Bee Creek coal visibly contains a 
large proportion of argillaceous impurity, resulting in 23-61 per cent, of asli. 
In 1889, Mr. A. Gibb Maitland mapped f the Coal-Measures in the neighbournoo<- 
of Mackay, and connected his lines with those on the Bow-en River, mapped tiy 
1878. With the Annual Report of the Geological Survey for 1889 a Geological Map is 
given, showing the connection of tho Bowen River Coal Pield with that on the lioac o 
tbe Isaacs 
It appears that the Upper Formation extends south-eastward from the Bowen 
River up Rosella Creek and the heads of the Bowen, where it is capped by the Deser 
Sandstone Tablelands known as Mount Leslie and the Eedcliffe Kanp;e, across the ig 
land dividing the heads of the Bowen, the Suttor, and the Isaacs Elvers and Walker 
Creek, gradually widening from north-west to south-east, and capped at the heads o ^ 
Isaacs by the Desert Sandstone Tablelands known as tho Carborough Ranges. ^ ® 
Middle Formation has been traced on the north-eastern side of the Upper Formation, 
beneath which it emerges, from the head of the Bowen River south-eastward to Nebo- 
The bedded porphyrites emerge from beneath the Middle formation from the Bowe 
Eiver to Exmoor Station. The fault already mentioned divides the bedded porphyn e 
from the metamorphic rocks of the Clarke Range along a line extending from the 
♦ Probably two species of Glossopteris occur here, one possessing a broad thick mArib. The 
named Pecoptens! is certainly this genus or a very closely allied one. These plants still remain 
worked rat. features and Mineral Kesoui-ces of the Mackay District. Bnsbane : by 
Authority : 1889. 
