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Understanding the Architecture and Petroleum Potential of Australia's Onshore Sedimentary Basins with Deep Seismic Reflection Data

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Created 13/01/2025

Updated 13/01/2025

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The Onshore Energy Security Program, funded by the Australian Government and conducted by Geoscience Australia, has acquired deep seismic reflection data across several frontier sedimentary basins to stimulate petroleum exploration in onshore Australia. Interpretation of the new seismic data from these onshore basins, focusing on overall basin geometry, internal sequence stratigraphy and petroleum potential, will be presented here. At the southern end of the exposed part of the Mt Isa Province, northwest Queensland, a deep seismic line (06GA-M6) crossed the Burke River Structural Zone of the Georgina Basin. The basin here is >50 km wide, with a half graben geometry, bounded in the west by a rift border fault. The Millungera Basin in northwest Queensland is completely covered by the Eromanga-Carpentaria Basin and was unknown prior to relatively short segments across the western part of the basin being imaged seismically in two lines (06GA-M4 and 06GA-M5) in 2006. Following this, seismic line 07GA-IG1 imaged a 65 km wide section of the basin. The geometry of internal stratigraphic sequences and a post-depositional thrust margin indicate that the original succession was much thicker than preserved today and there is potential for a petroleum system to exist. The Yathong Trough, in the southeast part of the Darling Basin in NSW, has been imaged in seismic line 08GA-RS2, with several stratigraphic sequences being mapped. Previous studies indicate that the upper part of this basin consists of Devonian sedimentary rocks, with potential source rocks at depth. In eastern South Australia, seismic line 08GA-A1 crossed the Cambrian Arrowie Basin, which is underlain by a Neoproterozoic succession of the Adelaide Rift System. Shallow drillholes have aided the assessment of the petroleum potential of the Cambrian Hawker Group, which contains bitumen in some of the cores, indicating the presence of source rocks in the basin system.

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Title Understanding the Architecture and Petroleum Potential of Australia's Onshore Sedimentary Basins with Deep Seismic Reflection Data
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/3b93a417-7184-4acb-a817-51efd8c62e41
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[96.0, -44.0], [168.0, -44.0], [168.0, -9.0], [96.0, -9.0], [96.0, -44.0]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Understanding the Architecture and Petroleum Potential of Australia's Onshore Sedimentary Basins with Deep Seismic Reflection Data". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/understanding-the-architecture-and-petroleum-potential-of-australias-onshore-sedimentary-basins

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