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THE DUNOLLY GOLD FIELD.
The following report on the Dnnolly Gold-field is based on two short visits, of which the first was on the 6th of October, 1902. Mr. Thomas Tregurtha, of Ballarat East, who had been engaged to direct operations in a search for the continuation of the rich line of concentrated deposit of gold worked by the early Birthday companies, had at that date succeeded in locatĀ­ing its southerly extension; but though the gold-bearing stone had been reached at the No. 5. level, the works were hardly advanced enough to show the real value of the discovery ; and I accordingly returned on the 24th of October.
The general cracking of the corrugated sedimentary rock-beds of the Dunolly field is very similar to that of the whole of the Pyrenees range of mountains, 20 miles away to the west of it ; the systems of fracture show their main lines between arches, as legs to saddles, as it were, and these main
lines pass down into and through inverted arches, in exact accordance with the greater or less twist strain which has been applied in the corrugation of the rock beds in which they are. These systems of cracks are very extensive, and go to such depths as to have allowed of the surging upwards of hot fluid material, which cooled and consolidated into what are known.to us as
[Report sent in 29th October, 1902.]