Modelling the role of dynamic topography and eustasy in the evolution of the Great Artesian Basin

Braz, Carmen; Zahirovic, Sabin; Salles, Tristan; Flament, Nicolas; Harrington, Lauren; Müller, R. Dietmar

doi:10.1111/bre.12606

Cited by 6 publications

(6 citation statements)

References 92 publications

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“…This effect may have been intensified by relatively high Zr contents, hence high zircon fertility, of granitoids of the Musgrave Province (e.g., Howard et al, 2015). The existence of sufficient relief during the Early Cretaceous is consistent with paleo‐topography modelling results (Braz et al, 2021). Ultimately, the Lower Cretaceous drainage system forms part of a sediment dispersal network carrying a central Australian signature.…”

Section: Discussionsupporting

confidence: 89%

Reorganization of continent‐scale sediment routing based on detrital zircon and rutile multi‐proxy analysis

2022

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The duration and extent of sediment routing systems are intrinsically linked to crustal-to mantle-scale processes. Therefore, distinct changes in the geodynamic regime may be captured in the detrital record. This study attempts to reconstruct the sediment routing system of the Canning Basin (Western Australia) during the Early Cretaceous to decipher its depositional response to Mesozoic-Cenozoic supercontinent dispersal. Specifically, we reconstruct source-to-sink relationships for the Broome Sandstone (Dampier Peninsula) and proximal modern sediments through multi-proxy analysis of detrital zircon (U-Pb, Lu-Hf and trace elements) and detrital rutile (U-Pb and trace elements). Multi-proxy comparison of detrital signatures and potential sources reveals that the majority of the detrital zircon and rutile grains are ultimately sourced from crystalline basement in central Australia (Musgrave Province and Arunta region) and that proximal sediment supply (i.e., Kimberley region) is negligible. However, a significant proportion of detritus might be derived from intermediate sedimentary sources in central Australia (e.g., Amadeus Basin) rather than directly from erosion of crystalline basement. Broome Sandstone data are consistent with a large-scale drainage system with headwaters in central Australia. Contextualization with other broadly coeval drainage systems suggests that central Australia acted as a major drainage divide during the Early Cretaceous. EAGE DRÖLLNER et al.

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Section: Discussionsupporting

confidence: 89%

Reorganization of continent‐scale sediment routing based on detrital zircon and rutile multi‐proxy analysis

2022

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“…Similar observations can be made for the Niger Delta that accumulates in our simulation-up to 9.5 km of sediments, which can readily be compared with the 8.5-km estimate from sediment budgets (18) or the Eromanga Basin in central Australia with a predicted broad 1.2-km thick deposit, also within the range of observed values since the Late Cretaceous (Fig. 5B) (19). For the Amazon Fan (Fig.…”

Section: A Global Landscape and Sediment Transport Geomodelsupporting

confidence: 83%

“…5A) and find that terrestrial deposits store some 28% of the total sedimentary yield over the past 100 Myr. We predict a two-stage increase, first between 80 and 60 Ma during the drying of the North America interior seaway ( 5 ), partial sedimentary filling of Andean retroarc foreland basins ( 40 ), and to a lesser extent, the transition from marine to fluvial lacustrine environments of the epicontinental Eromanga Sea ( 19 ) (Fig. 5B).…”

Section: Oceanic and Continental Sedimentary Basinsmentioning

confidence: 99%

Hundred million years of landscape dynamics from catchment to global scale

Salles

Husson

Rey

et al. 2023

Science

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Our capability to reconstruct past landscapes and the processes that shape them underpins our understanding of paleo-Earth. We take advantage of a global-scale landscape evolution model assimilating paleoelevation and paleoclimate reconstructions over the past 100 million years. This model provides continuous quantifications of metrics critical to the understanding of the Earth system, from global physiography to sediment flux and stratigraphic architectures. We reappraise the role played by surface processes in controlling sediment delivery to the oceans and find stable sedimentation rates throughout the Cenozoic with distinct phases of sediment transfer from terrestrial to marine basins. Our simulation provides a tool for identifying inconsistencies in previous interpretations of the geological record as preserved in sedimentary strata, and in available paleoelevation and paleoclimatic reconstructions.

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“…Rapid subsidence in central Australia and corresponding high eustatic sea levels between ca. 120 and 90 Ma (Braz et al., 2021; Gurnis et al., 1998) coincide with the timing of deposition of thick sedimentary sequences in the Eromanga Basin (Alexander & Hibburt, 1996; Röth & Littke, 2022). More significantly, the Cooper–Eromanga Basin experienced considerable episodic magmatic and hydrothermal activity throughout the Mesozoic, causing considerable subsurface thermal perturbations (e.g.…”

Section: Discussionmentioning

confidence: 93%

“…Uplift in the Eromanga Basin in the Late‐Cretaceous coincided with uplift on the eastern Australia margin, as westward motion of the Pacific plate increased and the plate rotated clockwise to shift from normal to sinistral subduction below the eastern margin of Australia (Veevers, 2000). Additional factors of isostatic rebound in central Australia, continental platform tilt, eustatic sea level and dynamic mantle‐induced topography may have further contributed to Cretaceous uplift in eastern and central Australia (Braz et al., 2021; Bryan et al., 2012; Gurnis et al., 1998; Röth, 2022) facilitating erosion approaching 1 km between ca. 80 and 60 Ma in parts of the Eromanga Basin (Braz et al., 2021; Röth & Littke, 2022).…”

Section: Discussionmentioning

confidence: 99%

Thermal evolution and sediment provenance of the Cooper–Eromanga Basin: Insights from detrital apatite

Nixon,

Fernie,

Glorie

et al. 2024

Basin Research

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The prolific hydrocarbon and geothermal potential of the Cooper–Eromanga Basin has long been recognised and studied, however, the thermal history which underpins these resources has largely remained elusive. This study presents new apatite fission track and U–Pb data for eight wells within the southwestern domain of the Cooper–Eromanga Basin, from which thermal history and detrital provenance reconstructions were conducted. Samples taken from sedimentary rocks of the upper Eromanga Basin (Winton, Mackunda and Cadna‐owie Formations) yield dominant Early‐Cretaceous and minor Late‐Permian–Triassic apatite U–Pb ages that are (within uncertainty) equivalent to corresponding fission track age populations. Furthermore, the obtained Cretaceous apatite ages correlate well with the stratigraphic ages for each analysed formation, suggesting (1) little time lag between apatite exposure in the source region and sediment deposition, and (2) that no significant (>ca. 100°C) reheating affected these formations in this region following deposition. Cretaceous apatites were likely distally sourced from an eastern Australian volcanic arc, (e.g. the Whitsunday Igneous Association), and mixed with Permian–Triassic sediment sources from the New England and/or Mossman Orogens. Deeper samples (>2000 m) from within the southwestern Cooper Basin yielded partially reset fission track ages, indicative of heating to temperatures exceeding ca. 100–80°C after deposition. The associated thermal history models are broadly consistent with previous studies and suggest that maximum temperatures were reached at ca. 100–70 Ma as a result of hydrothermal circulation correlating with high rates of sedimentation. Subsequent Late‐Cretaceous–Palaeogene cooling is interpreted to reflect post magmatic thermal subsidence and cessation of hydrothermal activity, as well as potential modified rock thermal conductivity as a response to fluid flow. Five of the seven modelled wells record a Neogene heating event, the geological significance of which remains tentative but may suggest possible reactivation of the Cooper Hot Spot and associated hydrothermal circulation.

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Modelling the role of dynamic topography and eustasy in the evolution of the Great Artesian Basin

Cited by 6 publications

References 92 publications

Reorganization of continent‐scale sediment routing based on detrital zircon and rutile multi‐proxy analysis

Reorganization of continent‐scale sediment routing based on detrital zircon and rutile multi‐proxy analysis

Hundred million years of landscape dynamics from catchment to global scale

Thermal evolution and sediment provenance of the Cooper–Eromanga Basin: Insights from detrital apatite

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