F55/B1-39 Contour interval: 5

F55/B1-13 Vertical scale: 100

F55/B1-9 Vertical scale: 100

Legacy product - no abstract available

Legacy product - no abstract available

35% coverage east F55/B1-41 Contour interval: 10

A seismic reflection survey was conducted on behalf of L.H. Smart Oil Exploration Company Limited by Geosurveys of Australia Ltd during 1959. The survey consisted of a number of shot-points placed at one or two-mile intervals along lines across the Canaway anticline, the Pinkilla anticline, and the Chesson (Orient) anticline of the Grey Range. The purpose of the survey was to provide detailed information of the subsurface structure of anticlines indicated by surface geology. The survey was interpreted with reference to geology known from the Bulgroo bore on the western limb of the Canaway anticline. Seismic operations clearly indicated that surface fold structure continues and is enhanced with depth; the anticlines are caused by buried ridges, probably with Precambrian core-rocks. Permian to Cretaceous sediments are draped over these ridges and have a minimum thickness of about 4,000 it across the Canaway anticlinal crest; in the adjoining trough syncline, they thicken rapidly to 10,000 it or more.

This report refers to a seismic reflection survey conducted near the town of Muttaburra in Queensland, between 16th October and 12th December, 1959, by Geoseismic (Australia) Ltd, for the Artesian Basin Oil Company Pty Ltd. The purpose of the survey was to determine the nature of any structures present and the thickness of the sedimentary rocks. A number of isolated reconnaissance lines were laid and the shot-points were placed at one or two mile intervals. The records were computed by jump correlation. One structural feature found as a result of the reconnaissance traverses was investigated by more detailed work. A northerly plunging anticline, with easterly dip contrary to the regional westerly dip was delineated on two reflecting horizons. The relief due to the easterly dip is approximately 250 feet on the deeper horizon and 200 feet on the shallower horizon. To investigate the area fully, it would be necessary to carry out a further seismic reflection survey using the continuous profiling method of recording and computing.

Wolframite is the commonest source of tungsten, but scheelite is present in some mines. Minerals of bismuth, copper, molybdenum, lead, tin, and iron have been identified in association with the tungsten minerals. Minor amounts of gold are also present. The Hatches Creek Wolfram Field is situated near the north-eastern end of the Davenport Range in the Northern Territory. The Stuart Highway, a bitumenized road linking the port of Darwin with Tennant Creek and Alice Springs, crosses the Range at the north-western end. Wolfram deposits are present at Wauchope, The Devil's Marbles, Moscluito Creek, Kurunelli, Epenarra, Elkedra, and Hatches Creek; only the Wauchope and Hatches Creek deposits have proved to be economically important. The Wauchope deposits have been investigated by Sullivan (1952). The Hatches Creek Wolfram Field is defined for the purpose of this report as a roughly triangular area bounded by Hatches Creek, Mia Mia Creek, and the Hit or Miss Gully (Pl. 2). The area extends roughly seven miles in a northerly direction and is about three miles across at the base. Only two small tungsten bearing reefs and some reefs reputed to carry gold lie outside this area.

A reflection seismic survey was conducted in 1959 on Authority to Prospect 55P by Austral Geo Prospectors Pty Ltd for Associated Australian Oilfields N.L. (A.A.O.), through A.A.O.'s management affiliate, Mines Administration Pty Ltd. The survey was made in the vicinity of the Arcadia Anticline, about 90 miles north of Roma, Queensland. Two exploratory bores had been drilled on the Arcadia Anticline, the first by Oil Search Ltd in 1936, and the second by Associated Australian Oilfields N.L. in 1957. The Oil Search test yielded a gasflow, mainly of carbon dioxide, of 3,000,000 cu.ft per day from the Staircase Sandstone. Shows of oil and gas encountered in the Associated Australian Oilfields bore were insignificant. The purposes of the seismic survey were as follows:- (1) To outline subsurface structural conditions; (2) To indicate whether a more detailed reflection seismic survey might locate drilling sites more favourable for the accumulation of oil or gas than those of the O.S.L. No.3 and A.A.O. No.7 Bores. The three horizons that were mapped showed a general conformity of structure but the maps showing the intervals between the mapping horizons indicated a lack of conformity in thickness of the strata. These results led to the conclusion that the Arcadia Anticline is a fold of recent geological age. The seismic data indicated that the Oil Search No. 3 Bore was drilled on the crest of the Arcadia Anticline. Additional seismic work would be necessary to determine the most favourable location for further investigation.