88 
PROCEEDINGS OF THE ROYAL SOCIETY OF QUEENSLAND. 
with what is apparently one persistent reversed fault which has caused 
both the high dips and the outcrops themselves in an area otherwise 
almost devoid of exposures. 
In 1927 Jones (1927, p. 35) recognised a reversed fault in steeply 
dipping strata in the road cutting on the Redcliffe road near the corner 
of Beams road, some two miles south of Bald Hills. This fault which 
strikes N.N.W. appears to be the continuation of two associated reversed 
faults that may be seen in the beds which outcrop on the southern bank 
of the South Pine River, just below Roghan road pumping station. In 
the latter case, however, the beds are more steeply dipping, and the 
combined throw of the two faults is much greater than that of the 
Redcliffe road fault. Both drag and slickensiding are very pronounced 
especially near the fault plane of the larger fracture which has a throw 
or vertical displacement of approximately 50 feet and a heave or hori- 
zontal displacement of 90 feet. This, combined with the smaller associ- 
ated fault, which has a throw of some 20 feet and heave of 35 feet, gives 
a total vertical displacement of approximately 70 feet and horizontal 
displacement of 125 feet. 
Text Fig. 1. 
Scale 
0 * 69 '* 
)ds. 
N.-S. Section exposed on Bank of South Pine Biver, showing Beversed Faults. 
These faults strike approximately 40 degrees west of north, and 
continuing in this direction another outcrop, some two miles to the north- 
west, is encountered. The beds between these two outcrops have been 
obscured by the accumulation of recent alluvium on the flood plain of 
the South Pine River. The outcrop to the N.W. is made up chiefly of 
almost vertical, biscuit-coloured, sandstones and sandy shales on portion 
256, parish of Warner, approximately one and a-half miles west of 
Strathpine railway station. The beds are also very slickensided here, 
but unfortunately there are no cliffs or cuttings to present' a section. 
It is interesting to recall that according to Bryan (1925, p. 38) “Morton 
held that these steeply dipping beds were the result of faulting/’ As 
there are no exposures to the east or west of this line of outcrop, the 
angle of dip presumably diminishes fairly rapidly on either side. 
The line of outcrop of the beds, which is still 40 degrees west of 
north and coincident with the strike of the reversed fault, can be traced 
from portion 256 for half-a-mile through portion 250, parish of Warner, 
but then disappears, reappearing again about three-quarters of a mile 
further on in a north-westerly direction on portion 190, parish of Warner. 
Here the average dip is 45 degrees to the W.S.W., although the out- 
cropping beds at one place are almost vertical. Moreover, the material 
recently brought up from a shaft put down for oil shale near the outcrop 
is very much slickensided and suggests heavy faulting. The outcrop of 
