1887
Volume 22, Issue 1
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

The geometries of sedimentary basins in eastern Australia, observed in BMR seismic data, place constraints on models for their development. The Permian Taroom Trough (southern, subsurface extension of the Bowen Basin) is interpreted as a transtensional basin associated with strike-slip faulting. Small flower structures in overlying Jurassic sediments are interpreted as transpressional features due to reactivation of the faults. To the north, the BMR Bowen Basin deep seismic data show a Late Permian-Early Triassic sedimentary wedge that appears to thicken to the east, suggesting a similar geometry to that seen in the Taroom Trough. The sedimentary section is deformed by a series of listric thrust faults that root in a major east-dipping detachment which appears to flatten in the middle crust. Thus, the exposed part of the Bowen Basin possibly was initiated during a period of extension oriented ENE-WSW in the latest Carboniferous or earliest Permian, whereas to the south, the subsurface part of the basin was dominated by oblique extension and strike-slip (transtension).

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1991-03-01
2026-01-23

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References

  1. Bauer, J. A., and Dixon, O., (1981). ‘Results of a seismic survey in the southern Denison Trough, Queensland, 1978-79’. BMR J. Aust. Geol. Geophys., 6, 213-222.
  2. Gibbs, A. D., (1983). ‘Balanced cross-section construction from seismic sections in areas of extensional tectonics’. J. Struct. Geol., 5, 153-160.
  3. Hammond, R. L., (1987). The Bowen Basin, Queensland, Australia: an upper crustal extension model for its early history’. Bur. Mm. Res., Rec, 1988/51, 131-139.
  4. Hammond, R. L, (1988). ‘The geological structure of the Bowen Basin’. In: Mallett, C. W., Hammond, R. L, Leach, J. H. J., Enever, J. R., & Mengel, C, Bowen Basin - stress, structure and mining conditions: Assessment of mine planning. CSIRO Div. Geomechanics, NERDDC Project No. 901, Final Report, 10-43.
  5. Hobbs, B. —., (1985). ‘Interpretation and analysis of structure in the Bowen Basin’. Geo/. Soc. Aust., Abs., 17, 151.
  6. Korsch, R. J., Harrington, H. J., Wake-Dyster, K. D., O'Brien, P. E., and Finlayson, D. M., (1988). ‘Sedimentary basins peripheral to the New England Orogen: their contribution to understanding New England tectonics’. In: Kleeman, J.D. (Ed.), New England Orogen - Tectonics and Metallogenesis. Univ. New England, Armidale, 134-140.
  7. Korsch, R. J., Wake-Dyster, K. D., and Johnstone, D. W., (1990a). ‘A Mapping Accord Project: Sedimentary Basins of eastern Australia, with comments on 1989 Bowen Basin Deep Seismic Profiles’. In: Muir, W. F, (Ed.), Queensland 1990 Exploration and Development. 12th Ann. PESA(Qld) - ODCAA - SPE Petroleum Symp., Brisbane, 78-86.
  8. Korsch, R. J., Wake-Dyster, K. D., and Johnstone, D. W— (1990b). ‘Deep seismic profiling across the Bowen Basin’. In: Beeston, J. W., (Comp.), Bowen Basin Symposium 1990 Proceedings, Geol. Soc. Aust. (Queensland Div.), Brisbane, 10-14.
  9. Ziolkowski, V., and Taylor, R., (1985). ‘Regional structure of the north Denison Trough’. Geol. Soc. Aust., Abs., 17, 129-135.
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  • Article Type: Research Article
Keyword(s): basins; strike-slip faulting; thrusts; transtension

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