Exploring for the future: Kidson Sub-basin seismic interpretation

Southby, Chris; Carr, Lidena; Henson, Paul; Haines, Peter W.; Zhan, Alex; Anderson, J.R.; MacFarlane, S.K.; Fomin, T.; Costelloe, Ross

doi:10.1080/22020586.2019.12073007

Cited by 6 publications

(6 citation statements)

References 1 publication

(2 reference statements)

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“…Extensional structures shown as normal faults are observed within the deeper parts of the Subbasin which demonstrate early rifting episodes that developed and shaped the basin during the early Paleozoic period (Fig. 7; Southby et al, 2019). Compressional and inverted structures, including faulting and upright folds, are observed within the entire stratigraphic package, from Silurian to Mesozoic sediments, at the eastern and western edges of the Kidson Sub-basin (Fig.…”

Section: Interpretation Of Seismic Line 18ga-kb1-60kmmentioning

confidence: 90%

“…The acquisition of these datasets has led to new understandings of the salt formations in the Kidson Sub-basin, which are the result of tectonic uplift and associated change of the depositional environment from open marine to restricted marine conditions in the Ordovician (Zhan, 2019). Extensive erosional unconformities were also observed on seismic line 18GA-KB1 and have been interpreted to be the result of exhumation during major basin inversion episodes (Southby et al, 2019). Prior to this new acquisition, there have been exhumation studies based on wells in the broader Canning Basin, such as that of Duddy et al (2003Duddy et al ( , 2006 and Green (2014) that studied the thermal history reconstruction of the Canning Basin.…”

Section: Introductionmentioning

confidence: 94%

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The Magnitude of Exhumation in the Kidson Sub-basin, Western Australia, using Thermal and Compaction Techniques

Marfo

Makuluni

Clark

2022

Preprint

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The Kidson Sub-basin which forms the largest tectonic province of the Canning Basin has a high potential for Uranium, sediment-hosted base metals, conventional and unconventional hydrocarbons. The basin has undergone major tectonic events since its formation in the Early Ordovician involving several inversion episodes resulting in extensive exhumation in the basin. The magnitude, timing and distribution of exhumation associated with these inversion episodes are poorly studied due to sparse data in the area. In this study, we integrate recently acquired seismic data with existing well data, combining for the first time thermal and compaction techniques to constrain the magnitude and distribution of exhumation associated with these major inversion episodes. Our results indicate that 300 to 500 m of exhumation occurred during the middle Silurian to Early Devonian inversion episode or Prices Creek Compression, 500 to 750 m of exhumation occurred during the middle Carboniferous inversion episode or Meda Transpression and 800 to 1200 m of exhumation occurred during the Late Triassic to Early Jurassic inversion episode or Fitzroy Transpression. Data from apatite fission-track analysis put temporal constraints on the timing of this exhumation and indicate that cooling from maximum post-depositional temperatures within the Kidson Sub-basin occurred in the Late Triassic to Early Jurassic. This imply that a paleothermal maximum was reached within the Kidson Sub-basin during the Early Triassic extension episode, prior to the Fitzroy Transpression. During this period, we also detect that the sediments were affected by a slight increase in basal heat flow associated with the rifting event. Results illustrate that during each of these inversion events, higher amounts of exhumation affected the Kidson Sub-basin than previously thought. The results from this study also demonstrate two dominant factors controlling the spatial and temporal distribution of exhumation in the Kidson Sub-basin. We suggest that the spatial distribution of exhumation in the sub-basin during each inversion episode was dominantly controlled by variation in rheology (strength) of inherited basement units, whilst the temporal distribution of exhumation was dominantly controlled by variation in the magnitude of compressive stress.

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Section: Interpretation Of Seismic Line 18ga-kb1-60kmmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 94%

The Magnitude of Exhumation in the Kidson Sub-basin, Western Australia, using Thermal and Compaction Techniques

Marfo

Makuluni

Clark

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Extensional structures shown as normal faults are observed within the deeper parts of the Sub-basin which demonstrate early rifting episodes that developed and shaped the basin during the early Paleozoic period (Fig. 7; Southby et al, 2019).…”

Section: Interpretation Of Seismic Line 18ga-kb1-60kmmentioning

confidence: 99%

“…The acquisition of these datasets has led to new understandings of the salt formations in the Kidson Sub-basin, which are the result of tectonic uplift and associated change of the depositional environment from open marine to restricted marine conditions in the Ordovician (Zhan, 2019). Extensive erosional unconformities were also observed on seismic line 18GA-KB1 and have been interpreted to be the result of exhumation following major basin inversion episodes (Southby et al, 2019). Prior to this new acquisition, there have been exhumation studies based on wells in the broader Canning Basin, such as that of Duddy et al (2003Duddy et al ( , 2006 and Green (2014) that studied the thermal history reconstruction of the Canning Basin.…”

Section: Introductionmentioning

confidence: 94%

“…As a result of this potential, the Kidson Sub-basin has been the focus of new acquisition of seismic and well data in the area. These new data sets includes an 872 km 2D seismic line across the Kidson Sub-basin, acquired in 2018 and the Barnicarndy-1 stratigraphic well, drilled in 2019 (Geoscience Australia, 2020;Southby et al, 2019). The acquisition of these datasets has led to new understandings of the salt formations in the Kidson Sub-basin, which are the result of tectonic uplift and associated change of the depositional environment from open marine to restricted marine conditions in the Ordovician (Zhan, 2019).…”

Section: Introductionmentioning

confidence: 99%

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