Sydney NSW sheet SI/56-5 Australian National Grid

Abstract

Although geological observations had been made in the Sydney District in the early part of the 19th Century, the first systematic work in this field was published in 1867, when Rev. W. B. Clarke published his ‘Remarks on Sediment ary Formations in New South Wales’. Wilkinson, David, Etheridge, Curran, and others added to this knowledge before 1900; and all later workers owe a special debt to these pioneers, most of whose surveys were carried out under primitive conditions of access and transport. Since 1900, Came, in his memoirs on kerosene shale deposits (1903) and the Western Coalfield (1908), and Willan’s Geological Map of the Sydney District (1925) have covered large parts of the Sydney Sheet. More recently, the mapping by Raggatt (1938) of the Narrabeen Group, Lovering (1954) of the Wianamatta Group, Rayner (1954, 1955, 1956), and Branagan (1960) of the Western Coalfield, and McElroy & Relph (1960) of the Kanangra — Katoomba — Warragamba area, has contributed much towards the refinement of previous geological mapping. An extensive deep and shallow drilling programme, still in progress, with associated mapping, by the Australian Oil and Gas Corporation Limited has added greatly to our knowledge of the Sydney Area. Drilling for coal in the Lake Macquarie area is proceeding on behalf of the Electricity Commission in association with the Joint Coal Board, State Mines Control Authority, B