331 
5.—DETAILS OF BORES Nos. 1 TO 11, WITH THE FOSSILS 
OBTAINED THEREFROM. 
BORE No. 1. 
Derpth (feet). 
Nature of Rock. 
Details and Fossil Contents. 
Surface-3 
A fine, dark-brown, loamy 
sand 
3-10 
10-24 
24-30 
30-41 
41-40 
. A pale-brown, rubbly, 
steatitic clay with a 
little sand 
. A pale-brown, steatitic 
clay similar to the 
above, but closer in 
texture 
. White steatitic clay. Ad¬ 
hesion to moist surface 
very strong 
. A white, soapy clay (stea¬ 
titic), more friable than 
the last 
. Bright-yellow sand 
46-60 
Whitish quartz sand 
60-67 
67-70 
70-89 
89-95 
95-101 .. 
101-140 .. 
140-141 .. 
Fine, white, quartz sand, 
with a few larger 
grains; also some fels- 
pathic particles 
Fine, white, quartz sand, 
with a few larger grains 
of milky quartz and 
felspathic particles 
Fine white sand com¬ 
posed largely of quartz, 
with many felspathic 
fragments and flakes of 
white mica (probably 
muscovite) 
A granitic sand in which 
the felspathic and mi¬ 
caceous fragments are 
fairly numerous. This, 
if consolidated, would 
be termed a true arkose 
Fine sand of a pale-brown 
colour; containing, be¬ 
sides quartz, some fels¬ 
pathic fragments and 
mica 
A fine pink sand, with a 
moderate proportion of 
mica flakes and some 
felspathic fragments 
Quartz pebbles measuring 
about 6 to 18 mm. in 
diameter 
Contains numerous vegetable fibres. Sand com¬ 
posed of sub-angular to moderately well- 
rounded quartz grains, with a few chalcedonic 
and ferruginous (hsematitic) grains. Roughly 
speaking, less than 1 per cent, of the quartz 
grains are wind-polished, and those only of the 
smaller particles. 
Breaks down in water to a fine deposit like 
fuller’s earth. Under the microscope the 
ultimate disintegrated particles resemble ir¬ 
regular flakes of steatite. 
Cuts with a bright surface. 
Containing a few angular quartz grains of small 
dimensions, averaging 0'2 mm. in diameter. 
The fine washings under the microscope show 
this sample to contain a fair proportion of 
fine quartz sand. 
The ochreous coating of the quartz grains is 
readily washed off in water. The quartz 
grains are sub-angular to rounded; a small 
proportion wind-polished. A few limonitio 
fragments present. 
Sub-angular quartz grains, with very little 
polishing. 
Angular to sub-angular grains. 
Angular to sub-angular quartz grains. Associated 
with these are a few pink jasper and black 
(?) lydite particles. 
This is evidently a sand directly derived from 
granite. It also points to a similar origin for 
the three preceding samples. 
Also a few dark-green to black (?) lydite particles 
are present. The small hexagonal plates of 
mica seem to indicate a moderately fine-grained 
granite for the rock of its origin. 
Some jasper particles present. 
The quartz grains are perfectly angular. 
These are sub-angular to rounded, with the edges 
and surfaces smoothed, but not particularly 
well polished ; probably water-worn. 
