1887
Volume 22, Issue 3
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

A regional 1650 km grid of deep seismic reflection data and complementary ship-shore refraction data is being used to study the deep structure of the Gippsland Basin. Preliminary results indicate that within the Cental Deep of the basin there appears to be little development of highly rotated fault blocks that are characteristic of most rift basins. On this basis we suggest that the basin may be of strike slip or transtensional origin. Periodic movements of the sinuous boundary fault systems, may have lead to intra-Latrobe traps, with the culmination of these movements in the early Tertiary forming the 'Top Latrobe' anticlines. Such movements appear to have been right-lateral.

The fault systems which bound the basin extend downwards to the lower crust. A band of high amplitude events at mid to lower crustal levels may represent anastomosing fault systems at a detachment zone.

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1991-09-01
2026-01-18
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References

  1. Brown,B. R., (1986), Offshore Gippsland Basin Silver Jubilee, In Glenie, R.C. (ed.), Transactions of the Second Southeastern Australia Oil Exploration Symposium, PESA, Melbourne, Australia, 29-56.
  2. Collins, C. D. N., Cull, J. P., Willcox, J. B., & Collwell, J. B. (1989), A long-offset seismic reflection and refraction study of the Gippsland and Bass Basins from onshore recording of a marine air-gun source, Explor. Geophys., 20, 293-295.
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  10. Kirby, S. M. (1985), Rock mechanics observations pertinent to the rheology of the continental lithosphere and the location of strain along shear zones, Tectonophysics, 119, 1-27.
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  12. Rahmanian, V. D., Moore, P. S., Mudge, W. J., & Spring, D. E. (1990), Sequence stratigraphy and habitat of hydrocarbons, Gippsland Basin, Australia, In World Petroleum Provinces, Geological Society of London Publication 50, 525-541.
  13. Robertson, C. S., Lockwood, K. L., Nicholas, E. & Soebarkah, J. (1978), A review of petroleum exploration and prospects in the Gippsland Basin, Bureau of Mineral Resources Record, 1978/11.
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  • Article Type: Research Article
Keyword(s): deep-crustal seismic; Gippsland Basin; petroleum potential

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