Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia
© 2017 Elsevier Ltd Structural analysis of the Indian Merge 3D seismic survey identified three populations of normal faults within the Exmouth Sub-basin of the North West Shelf volcanic margin of Australia. They comprise (1) latest-Triassic to Middle Jurassic N-NNE-trending normal faults (Fault Pop...
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| Format: | Journal Article |
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Elsevier
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/68201 |
| _version_ | 1848761769805217792 |
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| author | Black, M. McCormack, K. Elders, Chris Robertson, D. |
| author_facet | Black, M. McCormack, K. Elders, Chris Robertson, D. |
| author_sort | Black, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 Elsevier Ltd Structural analysis of the Indian Merge 3D seismic survey identified three populations of normal faults within the Exmouth Sub-basin of the North West Shelf volcanic margin of Australia. They comprise (1) latest-Triassic to Middle Jurassic N-NNE-trending normal faults (Fault Population I); (2) Late Jurassic to Early Cretaceous NE-trending normal faults (Fault Population II); and (3) latest-Triassic to Early Cretaceous N-NNE faults (Fault Population III). Quantitative evaluation of > 100 faults demonstrates that fault displacement occurred during two time periods (210–163 and 145–138 Ma) separated by ∼20 Myr of tectonic quiescence. Latest Jurassic to Early Cretaceous (145–138 Ma) evolution comprises magmatic addition and contemporaneous domal uplift ∼70 km wide characterised by ≥ 900 m of denudation. The areally restricted subcircular uplift centred on the southern edge of the extended continental promontory of the southern Exmouth Sub-basin supports latest Jurassic mantle plume upwelling that initiated progradation of the Barrow Delta. This polyphase and bimodal structural evolution impacts current hydrocarbon exploration rationale by defining the nature of latest Jurassic to Early Cretaceous fault nucleation and reactivation within the southern Exmouth Sub-basin. |
| first_indexed | 2025-11-14T10:36:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-68201 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:36:56Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-682012018-05-18T08:07:31Z Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia Black, M. McCormack, K. Elders, Chris Robertson, D. © 2017 Elsevier Ltd Structural analysis of the Indian Merge 3D seismic survey identified three populations of normal faults within the Exmouth Sub-basin of the North West Shelf volcanic margin of Australia. They comprise (1) latest-Triassic to Middle Jurassic N-NNE-trending normal faults (Fault Population I); (2) Late Jurassic to Early Cretaceous NE-trending normal faults (Fault Population II); and (3) latest-Triassic to Early Cretaceous N-NNE faults (Fault Population III). Quantitative evaluation of > 100 faults demonstrates that fault displacement occurred during two time periods (210–163 and 145–138 Ma) separated by ∼20 Myr of tectonic quiescence. Latest Jurassic to Early Cretaceous (145–138 Ma) evolution comprises magmatic addition and contemporaneous domal uplift ∼70 km wide characterised by ≥ 900 m of denudation. The areally restricted subcircular uplift centred on the southern edge of the extended continental promontory of the southern Exmouth Sub-basin supports latest Jurassic mantle plume upwelling that initiated progradation of the Barrow Delta. This polyphase and bimodal structural evolution impacts current hydrocarbon exploration rationale by defining the nature of latest Jurassic to Early Cretaceous fault nucleation and reactivation within the southern Exmouth Sub-basin. 2017 Journal Article http://hdl.handle.net/20.500.11937/68201 10.1016/j.marpetgeo.2017.05.022 Elsevier restricted |
| spellingShingle | Black, M. McCormack, K. Elders, Chris Robertson, D. Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia |
| title | Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia |
| title_full | Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia |
| title_fullStr | Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia |
| title_full_unstemmed | Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia |
| title_short | Extensional fault evolution within the Exmouth Sub-basin, North West Shelf, Australia |
| title_sort | extensional fault evolution within the exmouth sub-basin, north west shelf, australia |
| url | http://hdl.handle.net/20.500.11937/68201 |