88 
general dip of 50° to N. 15° E.* The stratified rocks of Mount Biggenden, Mount 
Hastings, and Gebangle probably belong to the Gympie Beds, although there is no 
palaeontological evidence nearer than Yarrol in support of this view. 
The Mount Shamrock Gold, Silver, and Bismuth Mines, near the junction of 
Didcot and Chowey Creeks, are situated in a series of massive slates, hardened siliceous 
and felspatbic sandstones, quartzites and conglomerates, traversed by igneous dykes. 
These stratified rocks have undergone suflBeicnt metamorphism to render it difficult to 
distinguish the direction of either their dip or strike.f They probably belong to the 
Gympie Beds. 
Between Eidsvold Township and Lochaber Station, “about a mile from Lochaber, 
one passes on to fine-grained sandstones, quartzites and slates, which are dipping 
20° to the S. I should refer this formation, on lithological grounds, to the Devonian, 
which covers so large an area of this district ; the same beds are met with along the 
road from Mount Berry to Eidsvold, where occasional beds of limestone occur.” J The 
Lochaber rocks, as well as those between Mount Berry and Eid.svold, are now classed 
with the Gympie Beds. 
The country-rock of the Cania Gold Field “ consists of alternating layers of 
sandstone, slates, and limestones. The latter are of a pisobtic structure, and are in 
parts fossiliferous. I obtained, after a long search, a few specimens from a bed of lime- 
stone about 3 miles up the Three-moon Creek from the diggings. They were not, 
however, in a very good state of preservation In the creek just opposite to 
the township), the formation is dipping 30° to E. 15° S.” At Kariboe Creek, on Kroombit 
Diggings, west of Cania, similar strata liave also yielded some fossils. The whole are 
referred to the Gympie Beds. The fossils from Cania and Kariboe Creek, as determined 
by my Colleague, are : — 
Spirifera licarinata, Eth. fil. 
Martinia ? product aides, Eth. fil. 
Martiniopsis ? suhradiata, var. Morrisii, Eth. fil. 
Athyris ambigua, J. de C. Sby. 
„ Bandsi, Eth. fil. 
BhyncTionella, sp. ind. 
OrtMs resupinata, Martin. 
Produefus hradhythfxrus, G. Sby. 
,, semiretieulatus, Martin ? 
Lingula mytiloides, J. Sby. ? 
Modimnorplia ? Paintreei, Eth. fil. 
Goniatites, sp. ind., Bl. 15, figs. 14, 15. 
In addition to the above Mr. Bands mentions the occurrence of corals. 
The country-rock of the Baglan Gold Field (south of the mouth of 
the Fitzroy) consists chiefly of argillaceous and siliceous slates and hardened 
sandstones or quartzites. These beds strike north and south, and are on the 
whole nearly vertical, although at times they have a slight dip to the west. Their 
strike is from north to south. At Mount Holly a thick bed of conglomerate 
occurs. About a mile to the east of the Eeserve is a bed of blue encriuital and 
coralline limestone dipping at a high angle to the west. This limestone is full 
of encrinite remains. Another bed of limestone two miles to the east runs 
* Loc. oil., p. 4. 
t Keport by W. H. Rands on the Gold and Silver Deposits in the Neighbourhood of Mount Shamrock. 
Brisbane : by Authority : 1886. 
f Report by W. H. Rands on the Eidsvold Gold Field. Brisbane : by Authority : 1887. 
