Brief description
The seismic survey extending over the Poole Range and Price's Creek areas and the Pinnacle Fault, near the north-eastern boundary of the Fitzroy Basin. The survey was corducted during the winter of 1953. The Poole Range Dome has been mapped in outcropping rocks of Permian age, but its western closure is notcertain. It is at the south-eastern end of a line of anticlinal folding which includes the St. George Range Dome and Nerrima Dome. The target beds for an oil test bore would be the Devonian and/or Ordovician rocks, which crop out on tbe north-eastern side of the Pinracle Fault, ard over which the Permian rocks of the Poole Range are believed to lie unconformably. The seismic results indicate a thick section of sediments on the south-western side of the Pinnacle Fault and show a fair defree of conformity between shallow and deep reflections on the northern flank of the dome. Further investigation was made in 1954 around the flanks of the dome, to determine whether or not the domal structure persists at depth, but the interpretation of the results of the 1954 survey is not yet complete. The Ordovician roeks on tbe northeastern side of the Pinnacle fault are shown to have a probable unexposed thickness of about 900 feet.Lineage
Maintenance and Update Frequency: asNeeded
Statement: The survey described in tbis report forms part of the overall programme in the search for oil in the Fitzroy Basin in the Kimberley Division of Western Austrilia, which is being conducted by both the Commonwealth Government and
private companies. This survey was made during the second field season spent in that area by a seismic party of the
Bureau of Mineral Resources. The first season was spent in attempting to detail by refraction methods the deep structure underlying Nerrima Dome (Vale, Smith and Garrett, 1953), after it had been found impossible to record reflections over the Dome.
An assessment of the Fitzroy Basin or a regional basis by Schneeberger (1952) placed the Poole Range in the most
favourable position in the Fitzroy Basin for the occurrerce of oil. The Poole Range was then selected to be covered by
a detailed gravity survey and a seismic survey. The seismic survey included reflectiol and refraction traverses.Traverses "A" and "T"' are reflection traverses. Traverse "A" extends from the Ordovician outcrop at Price's Creek to
a point near the surface axis of the Poole Range Dome. Traverse "T" extends along the main Fitzroy Crossing-Halls Creek road from Traverse "A" to Christmas Creek Homstead. Refraction shooting was done along Traverse "A" between. S.P. 's 33 and 45. Traverse "Z" is a refraction traverse approximately along the strike on the Ordovician outcrops near Price's Creek.
Issued: 1955
Data time period: 1953-06-01 to 1953-08-31
text: westlimit=125.0; southlimit=-19.0; eastlimit=126.0; northlimit=-18.5
Subjects
AU-WA |
Earth Sciences |
Geophysics |
HVC_144637 |
Published_External |
Seismic Data seismic survey |
Seismology and Seismic Exploration |
geophysics |
geoscientificInformation |
petroleum exploration |
seismic reflection |
seismic refraction |
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Identifiers
- URI : pid.geoscience.gov.au/dataset/ga/76373
- global : de4ecded-087e-7494-e044-00144fdd4fa6
