77 
gold yet met with on Gympie was obtained. In the outcrop of this bed, on the south 
of the river near the No. 2 South Ellen Harkins, the fossil Frotorelepora ampla 
occurs. This is the only spot in which I have seen fossil remains in this bed. 
^ “ Another bed of slate is reported to exist below this, in one or two claims— The 
■Eldorado for instance.” Mr. Eands was, however, in some doubt about its occurrence. 
^ “A point of great interest is the occurrence of large isolated boulders in the 
^Pper or Thick Bod of Shale. As examples of these, I may mention one from the 
^0. 1 North Phmnix at a depth of 370 feet, at a point where the shale has passed into a 
aluminous sandstone. This boulder consists of a fine siliceous greywacke, and its 
dimensions are 13 x lOf x 5 inches. Another, in the shale in the Phoenix Golden Pile, 
of a coarse greywacke, containing ill-defined crystals of felspar and crystals of iron 
pyntes; this was 8^ 
'■-'"“-“O J - -- ■ i 4» 
3i inches. It would be difficult to say how far these 
-- , UUIS was Sf X Of X dt nicues. iU vvuum uc uimtuii. sjuji Iiuir 
oulders have travelled, since these greywackes are not only common on the field itself, 
at also throughout the Carbonifero-Permiau and Devonian Rocks, which occupy a large 
m this district. The presence of such boulders in a rock which was laid down as a 
oe silt would point to the conclusion that they were dropped from floating ground-ice, 
Hr any current of sufficient strength to carry along these boulders would have washed 
fhe lighter materials of which the shale is composed. 
A curious rounded boulder of granite, about 6 inches in diameter, was found 
®^closed in the O’Connell Roof, in the O’Connell Prospecting Claim, at a depth of 
b feet. The granite is coarse in the grain, and is composed of pink orthoclase and 
fiuartz, with a few specks of decomposed mica. This boulder must have been introduced 
the reef from the surface while the fissure remained open. It must have travelled 
^ ®'les, for I know of no granite nearer than that of the Black Snake Range, 
is about 20 miles west of Gympie.* The granite of which the boulder is 
^Hmposed is very different to that from the range, being much coarser and containing 
more quartz. This is the only instance of a boulder of the kind having been 
^ound. It ig probable that at the time it was deposited the country was submerged, and 
the boulder was carried, probably on floating ground-ice, and dropped into the 
PHsrtiou iu which it was found, while other similar boulders, which would have been 
^^Hpped on the sea-bottom, have since been removed by denudation. Had it been 
'with^^^^ by any land stream, the fissure in the reef would probably have been filled up 
others brought along with it. ^ 
greenish fossiliferous sandstone just above the ‘ Eirst Bed of Slate can 
^ ^traced White’s Gully to tho Lucknovv, and then again at the Two- Mile. It is 
gg ® easily recognisable, serving well in determining the horizon of beds near it. In 
places it is one mass of fossils. Amongst these are — Sfenopora, Frotoretepora, 
# Spirifem, Conocardiim, Aviculopecten muUiradlatiis, Edmondia, Fleuro- 
&c. 
been ' (dynipie Greenstone' is below the ‘ Second Bed of Slate. As it has 
®uch n. iaf„rv.ui:„™ T iniiof nlliirlB tn if, at some leneth. The 
occurr, 
I'euco 
O' stumbling-block to the miner I must allude to it at some length. 
Ore.. N" gofA in rocks below it has frequently been spoken of as contrary to all 
1 “C0Tjf»f*iv7y-v J .*.1 . 1 1 .1 -I . -ar A T> 4,-. /V in QlinlTOrf, OT 
Pj, gold m rocks bolow it nas irequentiy oeen spoKou ui. 
ipi ived ideas and principles, and tho late Mr. Aplin’s Repoi-t is quoted in support ot 
mas ^Pii'i ®nys in reference to this ‘ greenstone’ ‘ Whether in irregular-shaped 
' broad dykes, this rock occurs at intervals over a large portion of the o 
go nfield, but it is most prominently developed within a zone of half-a-mile in wi , 
thi 
Paving 
^PPgitudinal direction of N. G0° W., and embracing the space from the Eady 
-__£^^^^^^^that on which tho Gympie township commences. It is in the decompose 
character t ®^cn granite near Glastonbury, about 10 miles from Gympie, but it is of a ditferen 
0 that of which this boulder is formed.’^ 
