Authors / CoAuthors
Petkovic, P. | Hackney, R. | Morse, M.
Abstract
The frontier Capel and Faust Basins, 800 km east of Brisbane in water depths of 1000-3000 m, are generating interest in light of Australia's energy security concerns. The basins are a focus of Geoscience Australia's efforts to provide pre-competitive knowledge of offshore frontier regions to the petroleum exploration industry. A variety of new geophysical data has recently been obtained over these remote basins. A regional-scale residual gravity map, prepared from satellite-altimetry data and upward continuation, highlighted a series of N-S elongate gravity lows interpreted to represent basin depocentres. A 2D reflection seismic survey was designed on the basis of this gravity-inferred basin distribution. The survey was conducted in late 2006/early 2007 and provided 106-fold data to 12 s TWT on 5920 km of dip and strike lines. Sonobuoy data were recorded for velocity information. Additional ship-borne gravity and magnetic data were collected during the seismic survey and on a subsequent swath bathymetry and geological sampling survey in late 2007. The latter survey focussed on the north-western part of the seismic grid where depocentres appear to be best developed. The complex of small depocentres means that 2D potential field modelling is not appropriate, but the potential field data are being used as constraints to interpolate horizon and basement picks between the 20-50 km spaced seismic lines. Ultimately, these efforts will lead to a complete 3D picture of the upper crust that will assist assessments of the prospectivity of these remote but tantalising basins.
Product Type
nonGeographicDataset
eCat Id
65858
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- External PublicationAbstract
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- petroleum exploration
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- marine survey
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- geophysics
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- 3D model
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- continental margins
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- marine
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2009-01-01T00:00:00
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unknown
Topic Category
geoscientificInformation
Series Information
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Unknown
Parent Information
Extents
[-30.0, -25.0, 159.0, 164.0]
Reference System
Spatial Resolution
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