1887
2nd Australasian Exploration Geoscience Conference: Data to Discovery
  • ISSN: 2202-0586
  • E-ISSN:
PDF

Abstract

Summary

The North West Shelf of Australia is a volcanic rifted margin. Jurassic-Cretaceous breakup of Gondwana resulted in the intrusion of significant volumes of igneous material into sediments of the Northern Carnarvon Basin. The last major review of the regional distribution of this intrusive material was published over 20 years ago. Since, there have been major advances in the understanding of intrusions in sedimentary basins, and step changes in the quality of 3D and reprocessed 2D seismic data available in Northern Carnarvon basin.

We present preliminary findings of a new study building on these advances that investigates the regional spatial and temporal distribution of intrusions in the basin and the impact of this magmatism on petroleum systems. In this paper, we have mapped plumbing systems of intruded igneous complexes, interpreted on 3D surveys within the Exmouth Sub-basin, and on the Exmouth Plateau.

Within the study area we see (1) typical ‘saucer shaped’, and ‘stepped’ intrusion geometries; (2) intrusions exploiting faults and cross cutting stratigraphy as they rise to the surface; (3) interconnected intrusions, forming continuous magmatic plumbing systems >50km in length; (4) intrusions mainly present within in the Triassic Mungaroo Formation, and (5) intrusions possibly sourced from a hotspot that was located beneath the current Cape Range Fracture Zone during breakup.

© 2019 Taylor and Francis Group LLC
Loading

Article metrics loading...

/content/journals/10.1080/22020586.2019.12072966
2019-12-01
2026-01-22

  • From This Site

    /content/journals/10.1080/22020586.2019.12072966
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Aarnes, I., Planke, S., Trulsvik, M. & Svensen, H. 2015. Contact metamorphism and thermogenic gas generation in the Vøring and Møre basins, offshore Norway, during the Paleocene–Eocene thermal maximum. Journal of the Geological Society, 172, 588-598.
  2. Frey, Ø., Planke, S., Symonds, P. A. & Heeremans, M. 1998. Deep crustal structure and rheology of the Gascoyne volcanic margin, Western Australia. Marine Geophysical Researches, 20, 293-311.
  3. Fullerton, L. G., Sager, W. W. & Handschumacher, D. W. 1989. Late Jurassic‐Early Cretaceous evolution of the eastern Indian Ocean adjacent to northwest Australia. Journal of Geophysical Research: Solid Earth, 94, 2937-2953.
  4. Grove, C. 2013. Submarine hydrothermal vent complexes in the Paleocene of the Faroe-Shetland Basin: Insights from three-dimensional seismic and petrographical data. Geology, 41, 71-74.
  5. Hansen, J., Jerram, D. A., Mccaffrey, K. & Passey, S. R. 2011. Early Cenozoic saucer-shaped sills of the Faroe Islands: an example of intrusive styles in basaltic lava piles. Journal of the Geological Society, 168, 159-178.
  6. Holford, S., Schofield, N., Jackson, C.-L., Magee, C., Green, P. & Duddy, I. 2013. Impacts of igneous intrusions on source reservoir potential in prospective sedimentary basins along the western Australian continental margin.
  7. Magee, C., Briggs, F. & Jackson, C. A. L. 2013a. Lithological controls on igneous intrusion-induced ground deformation. Journal of the Geological Society, 170, 853-856.
  8. Magee, C., Jackson, C. A. L., Hardman, J. P. & Reeve, M. T. 2017. Decoding sill emplacement and forced fold growth in the Exmouth Sub-basin, offshore northwest Australia: Implications for hydrocarbon exploration. Interpretation, 5, SK11-SK22.
  9. Magee, C., Jackson, C. A. L. & Schofield, N. 2013b. The influence of normal fault geometry on igneous sill emplacement and morphology. Geology, 41, 407-410.
  10. Mark, N. J., Schofield, N., Pugliese, S., Watson, D., Holford, S., Muirhead, D., BROWN, R. & HEALY, D. 2018. Igneous intrusions in the Faroe Shetland basin and their implications for hydrocarbon exploration; new insights from well and seismic data. Marine and Petroleum Geology, 92, 733-753.
  11. Mcclay, K., Scarselli, N. & Jitmahantakul, S. 2013. Igneous Intrusions in the Carnarvon Basin, NW Shelf, Australia. West Astralian Basins Symmposium.
  12. Monreal, F. R., Villar, H., Baudino, R., Delpino, D. & Zencich, S. 2009. Modeling an atypical petroleum system: A case study of hydrocarbon generation, migration and accumulation related to igneous intrusions in the Neuquen Basin, Argentina. Marine and Petroleum Geology, 26, 590-605.
  13. Müller, R. D., Mihut, D. & Baldwin, S. 1998. A new kinematic model for the formation and evolution of the west and northwest Australian margin. The sedimentary basins of Western Australia, 2, 55-72.
  14. Planke, S., Rasmussen, T., Rey, S. S. & Myklebust, R. Seismic characteristics and distribution of volcanic intrusions and hydrothermal vent complexes in the Vøring and Møre basins. Geological Society, London, Petroleum Geology Conference series, 2005. Geological Society of London, 833-844.
  15. Rey, S. S., Planke, S., Symonds, P. A. & Faleide, J. I. 2008. Seismic volcanostratigraphy of the Gascoyne margin, Western Australia. Journal of Volcanology and Geothermal Research, 172, 112-131.
  16. Rohrman, M. 2013. Intrusive large igneous provinces below sedimentary basins: An example from the Exmouth Plateau (NW Australia). Journal of Geophysical Research: Solid Earth, 118, 4477-4487.
  17. Rohrman, M. 2015. Delineating the Exmouth mantle plume (NW Australia) from denudation and magmatic addition estimates. Lithosphere, 7, 589-600.
  18. Schofield, N., Holford, S., Millett, J., Brown, D., Jolley, D., Passey, S. R., Muirhead, D., Grove, C., Magee, C., Murray, J., Hole, M., Jackson, C. A. L. & Stevenson, C. 2017. Regional magma plumbing and emplacement mechanisms of the Faroe-Shetland Sill Complex: implications for magma transport and petroleum systems within sedimentary basins. Basin Research, 29, 41-63.
  19. Senger, K., Roy, S., Braathen, A., Buckley, S. J., Bælum, K., Gernigon, L., Mjelde, R., Noormets, R., Ogata, K. & Olaussen, S. 2013. Geometries of doleritic intrusions in central Spitsbergen, Svalbard: an integrated study of an onshore-offshore magmatic province with implications for CO2 sequestration. Norwegian Journal of Geology, 93, 143-166.
  20. Smallwood, J. R. & Maresh, J. 2002. The properties, morphology and distribution of igneous sills: modelling, borehole data and 3D seismic from the Faroe-Shetland area. Geological Society, London, Special Publications, 197, 271-306.
  21. Sun, Q., Wu, S., Cartwright, J., Wang, S., Lu, Y., Chen, D. & Dong, D. 2014. Neogene igneous intrusions in the northern South China Sea: Evidence from high-resolution three dimensional seismic data. Marine and Petroleum Geology, 54, 83-95.
  22. Symonds, P., Planke, S., Frey, O. & Skogseid, J. 1998. Volcanic Evolution of the Western Australian Continental Margin and its Implications for Basin Development. In: PURCELL, P. P., RR; (ed.) The Sedimentary Basins of West Australia 2. Perth: West Australin Basins Symposium.
  23. Vail, P. & Mitchum Jr, R. 1977. Seismic Stratigraphy and Global Changes of Sea Level: Part 1. Overview. American Association of Petroleum Geologists, 26, 21-52.
  24. VEEVERS, J., POWELL, C. M. & ROOTS, S. 1991. Review of seafloor spreading around Australia. I. Synthesis of the patterns of spreading. Australian journal of earth sciences, 38, 373-389.
  25. White, R. & Mckenzie, D. 1989. Magmatism at rift zones: the generation of volcanic continental margins and flood basalts. Journal of Geophysical Research: Solid Earth, 94, 7685-7729.
/content/journals/10.1080/22020586.2019.12072966
Loading
  • Article Type: Research Article
Keyword(s): Intrusions; Northern Carnarvon Basin; Petroleum Systems; Seismic

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error