CHAPTER VII. 
THE PEEMO-CAEBONIEEEOHS SYSTEM— 
THE aXMPIE FORMATION IN THE TYPE DISTRICT. 
Mineral Areas— viz., Gympie Gold Field and ITeerdie Antimony Mine. 
To a series of strata which attain an immense development in the south-eastern portion 
of the Colony, and are probably represented in many portions of the eastern coast 
district to the North, we have given the name of the “ Gympie Beds,” from the gold- 
field where they have, for the most part, been studied. To this series, so far as yet 
known, we have neither recognised a base nor a top. Its place in the geological scale 
must therefore, for the present, be determined mainly on palseontological evidence. 
The late Mr. D’Oyly H. Aplin, Government Geologist for South Queensland, 
made a report to the Government “ On the Geological and Mining Eeatures of the 
Gympie Gold Field”* * * § in 1868. 
Mr. T. E. Hacket, Mining Surveyor, published in 1870 a Geological Map of the 
Gympie Gold Field, but was content to distinguish ” Greenstone,” “Fossiliferous Green- 
stone and Slate,” and “ Slate and Sandstone.” 
Mr. Daintree, in his paper on the “ Geology of Queensland,”! made some refer- 
ences to the “ Devonian ” rocks of the Gympie Mining District, from which he made a 
collection of fossils which were determined by Mr. E. Etheridge, F.E.S. Mr. Etheridge’s 
list of fossils hardly bears out the reference of the strata to the Devonian. Of the 
fourteen fossils specifically determined by him, six (viz., Ceriopora (.^) laxn, Eth., 
Spirifera dubia, Eth., Avieulopecten imbricatus, Eth., A. multiradialus, Eth., Edmondia 
concenirica, Eth., and E. obovata, Eth.) are species either new or doubtful ; four (viz., 
Productus cora, D’Orb., Spirifera lisucleata, Sby., Avieulopecten limoeformis, Mor., and 
Pliuroiomaria carinata, Sby.) are European Carboniferous. One of the new species 
(viz., Ceriopora lam') is most nearly allied to an Irish Carboniferous species. Another 
{Stroplwniena rlwmboidalis, var. analoga, Phill.) ranges in Europe from Silurian to 
Carboniferous; while only one (viz., Spirifera undifera, var. undulata, Ebmer.) is 
exclusively Devonian. The balance of evidence, therefore, so far as it was before Mr. 
E. Etheridge, F.E.S. , appears to have been in reality much in favour of a homotaxial 
relation with the European Carboniferous. 
Mr. A. C. Gregory, in his “ Eeport on the Geology of Part of the Districts 
of Wide Bay and Burnett,”J gave a stratigraphical description of the Gympie Gold 
Field. 
The Eev. W. B. Clarke, in his “ Sedimentary Formations of New South Wales,”§ 
gave a list of fossils “ capable of identification,” from Gympie. These fossils, however, 
* Brisbane : by Authority : 1868. 
t Quart. Joum. Geol. Soc., xxviii., p. 289 (1872). 
X Brisbane : by Authority : 187S. 
§ Fourth Edition, 1878, p. 20. 
