522 
“A creek entering the Burdekin from the west exposes in a cliff on its northern 
hank a hed of conglomerate similar to that above described, resting upon schists, and 
covered by a compact basalt sheet. 
“The divide between tha Herbert and Burdekin is capped by horizontal beds of 
friable ferruginous sandstone, derived apparently from the denudation of granitic rocks ; 
these rest alternately upon acidic lavas and granite. 
“ In Blackwater Creek, a tributary of the Burdekin, what are taken to be 
representatives of the Desert Sandstone make their appearance on either bank of the 
river, and are seen to rest upon granite. From this section it appears that the Desert 
Sandstone beds vvere^laid down in the already denuded Burdekin Valley. 
“ Coarse ferruginous conglomerates or breccias, in the more immediate vicinity^ of 
Wairuna Station, rest upon the vertical edges of the slates, &c , which make up a large 
portion of the neighbourhood. On the south side of the Burdekin, between Wairuna 
and Lake Lucy, these Desert Sandstone rocks are well developed ; they often form con- 
spicuous cliffs, of no great height, which can be followed by the eye for some distance. 
“ The bridle-road from Wairuna to Lake Lucy crosses a tableland of ferruginous 
sandstone for about four miles in a southerly direction. The southern face of this is 
made up of a very red ferruginous grit, the material cementing the quartz grains being 
an earthy hannatite. 
“ From Oakhill Station to the summit of the Main Coast Eange several exposures 
of ferruginous sandstones are met with on either side of the road. These present a 
considerable lithological resemblance to those beds which cap the Main Range in the 
vicinity of the Kangaroo Hills Tin Field. 
“ The occurrence of fragments of these Cretaceous rocks throughout the whole 
of the Upper Burdekiu seems to indicate that they originally occupied a very extensive 
tract of country. That their thickness must have been considei’able is evidenced by the 
fact that their base occurs at all elevations above the sea-level. Taking the lowest 
elevation (near the mouth of Oakey Creek) at which these beds are met with as being 
Ij.SOO feet, and the highest elevation of their base [?] as being 2,200 feet above the sea, 
there cannot have been less than nine hundred feet of them ; how much more it is at 
present impossible to give any idea.” 
A “ G-eological Sketch Map of the Upper Gilbert” was published in 1869 by 
Mr. Daintrec. This map gives a very graphic idea of the relation of tho Desert Sand- 
stone to tho older rocks, but as the topography of the map on which the geological lines 
were laid down was very inaccurate, it must be regarded rather as a diagram than as a 
delineation of the facts of the case. It shows correctly the Desert Sandstone resting 
unconformably on older rocks, such as granite, porphyry, mica-schist, slate, &c., on the 
summit of the Newcastle Range, lorming the tableland between Gilberton and the 
Woolgar, and extending in isolated denuded tables over the high lands intersected by 
the G-ilbert, Robertson, and Percy Rivers, and Agate, Cave, and other creeks. As, 
however, I found, on travelling over the country in 1889, that many of Daintree s 
names have not passed into general use, and that owing to the inaccuracies of the map 
on which he laid down his work his localities often could not be identified, I shall 
content myself with recording some of the observations recently made by myself in this 
region. 
The Delaney River, a large tributary of the Etheridge, into which it empties 
itself at Georgetown, splits up near its head into Delaney Creek, Goldsmith’s Creek, 
Caledonian Creek, and others. These creeks rise on the edge of a tableland of Desert 
Sandstone, denuded into numerous fragments partly covering the gneisses, schists, 
slates, and granites which form the groundwork of the high lands between the Robertson 
