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The following extract has been taken from Publication No. 49 of Donald History and Natural History Group The View from the Mount. A History of the Jeffcott District by the Jeffcott History Research Committee.
Mount Jeffcott is made up of ancient strata, now believed to be of Cambrian age, laid down over 400 million years ago in the bed of ancient seas. The strata have been uplifted to 80 degrees, and run with a NNW strike. It is 140 metres above the level of the railway station at Donald and 262 metres above sea level. The rock has been hardened and intruded from below by Devonian granite, which shows at the surface at Jeffcott North. The intrusion of the sea in early Tertiary times probably left Mt. Jeffcott as an isolated islet. The subsequent recession of the sea, and the covering of the old sea bed by products of wind and river erosion, have left the hill as an isolated feature in plain country. Even today, some of its flora are typically coastal. |
