Neoproterozoic opening of the Pacific Ocean recorded by multi-stage rifting in Tasmania, Australia

Mulder, Jack; Everard, John L.; Cumming, Grace; Meffre, Sébastien; Bottrill, R. S.; Merdith, Andrew; Halpin, Jacqueline A.; McNeill, Andrew W.; Cawood, Peter A.

doi:10.1016/j.earscirev.2019.103041

Cited by 26 publications

(10 citation statements)

References 122 publications

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“…10g; Berry et al, 2008;. We follow Mulder et al (2020) in having Tasmania rift from the Antarctic margin (rather than the alternative scenario of Laurentia), thus implying that some further unknown micro-continents rifted from the western margin of Laurentia at the same time in order to account for that passive margin (e.g. Fig.…”

Section: Australia North China Lhasa and Tasmaniamentioning

confidence: 87%

“…14f, g Macdonald et al, 2013) (see also Colpron et al, 2002;Cox et al, 2018;Eyster et al, 2019). Mulder et al (2018b), while the Ediacaran-Cambrian evolution is after Mulder et al (2020). Times in these panels reflex the nominal time of best fit for each pole.…”

Section: Australia North China Lhasa and Tasmaniamentioning

confidence: 98%

“…Based on these geological connections, the Western Tasmania Terrane was likely located between East Antarctica and western Laurentia within an assembled Rodinia. The breakout of the Western Tasmania Terrane from its central position within Rodinia is recorded by widespread Tonian-Ediacaran sedimentation and rift-related magmatism (Mulder et al, 2020). The onset of Neoproterozoic rifting of the Western Tasmania Terrane is marked by 780-750 Ma intraplate magmatism (Black, 1997;Calver et al, 2013) and latest Tonian (750-730 Ma) siliciclastic and carbonate sedimentation (Calver et al, 2014;Mulder et al, 2018a).…”

Section: Australia North China Lhasa and Tasmaniamentioning

confidence: 99%

“…At 800 Ma, we model the birth of the Pacific/Panthalassic Ocean, here defined as the ocean basin separating Laurentia from North China, Australia and Antarctica, which most likely opened as Rodinia broke-up (although terrane migration across this ocean basin cannot be ruled out, e.g. Mulder et al (2020). We note here that the pre-Mesozoic Pacific Ocean is already universally referred to as the Panthalassic Ocean.…”

Section: Early Tonian Until Rodinia Breakup (1000-750 Ma)mentioning

confidence: 99%

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Extending full-plate tectonic models into deep time: Linking the Neoproterozoic and the Phanerozoic

Merdith¹,

Williams²,

Collins³

et al. 2022

Preprint

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Recent progress in plate tectonic reconstructions has seen models move beyond the classical idea of continental drift by attempting to reconstruct the full evolving configuration of tectonic plates and plate boundaries. A particular problem for the Neoproterozoic and Cambrian is that many existing interpretations of geological and palaeomagnetic data have remained disconnected from younger, better-constrained periods in Earth history. An important test of deep time reconstructions is therefore to demonstrate the continuous kinematic viability of tectonic motions across multiple supercontinent cycles. We present, for the first time, a continuous full-plate model spanning 1 Ga to the present-day, that includes a revised and improved model for the Neoproterozoic-Cambrian (1000-520 Ma) that connects with models of the Phanerozoic, thereby opening up pre-Gondwana times for quantitative analysis and further regional refinements. In this contribution, we first summarise methodological approaches to full-plate modelling and review the existing full-plate models in order to select appropriate models that produce a single continuous model. Our model is presented in a palaeomagnetic reference frame, with a newly-derived apparent polar wander path for Gondwana from 540 to 320 Ma, and a global apparent polar wander path from 320 to 0 Ma. We stress, though while we have used palaeomagnetic data when available, the model is also geologically constrained, based on preserved data from past-plate boundaries. This study is intended as a first step in the direction of a detailed and self-consistent tectonic reconstruction for the last billion years of Earth history, and our model files are released to facilitate community development.

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Section: Australia North China Lhasa and Tasmaniamentioning

confidence: 87%

Section: Australia North China Lhasa and Tasmaniamentioning

confidence: 98%

Section: Australia North China Lhasa and Tasmaniamentioning

confidence: 99%

Section: Early Tonian Until Rodinia Breakup (1000-750 Ma)mentioning

confidence: 99%

See 2 more Smart Citations

Extending full-plate tectonic models into deep time: Linking the Neoproterozoic and the Phanerozoic

Merdith¹,

Williams²,

Collins³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In contrast, the Western Tasmanian Terrane (WTT) has a longer tectonic history and comprises Mesoproterozoic to Paleozoic strata and igneous lithologies [17]. The two terranes were juxtaposed during the middle Devonian Tabberabberan Orogeny [18] and both terranes are variably covered by Carboniferous to recent sedimentary and igneous rocks.…”

Section: Tectonic and Geological Settingmentioning

confidence: 99%

Insights and Lessons from 3D Geological and Geophysical Modeling of Mineralized Terranes in Tasmania

et al. 2021

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Over the last two decades, Mineral Resources Tasmania has been developing regional 3D geological and geophysical models for prospective terranes at a range of scales and extents as part of its suite of precompetitive geoscience products. These have evolved in conjunction with developments in 3D modeling technology over that time. Commencing with a jurisdiction-wide 3D model in 2002, subsequent modeling projects have explored a range of approaches to the development of 3D models as a vehicle for the better synthesis and understanding of controls on ore-forming processes and prospectivity. These models are built on high-quality potential field data sets. Assignment of bulk properties derived from previous well-constrained geophysical modeling and an extensive rock property database has enabled the identification of anomalous features that have been targeted for follow-up mineral exploration. An aspect of this effort has been the generation of uncertainty estimates for model features. Our experience is that this process can be hindered by models that are too large or too detailed to be interrogated easily, especially when modeling techniques do not readily permit significant geometric changes. The most effective 3D modeling workflow for insights into mineral exploration is that which facilitates the rapid hypothesis testing of a wide range of scenarios whilst satisfying the constraints of observed data.

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Tonian-Cryogenian bimodal volcanism and related sulfide ores in the Arabian-Nubian Shield: An example from the Dendekan prospect in the Eastern Desert of Egypt

El‐Rahman¹,

Ramzey²,

Wu³

et al. 2023

Geochemistry

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Neoproterozoic opening of the Pacific Ocean recorded by multi-stage rifting in Tasmania, Australia

Cited by 26 publications

References 122 publications

Extending full-plate tectonic models into deep time: Linking the Neoproterozoic and the Phanerozoic

Extending full-plate tectonic models into deep time: Linking the Neoproterozoic and the Phanerozoic

Insights and Lessons from 3D Geological and Geophysical Modeling of Mineralized Terranes in Tasmania

Tonian-Cryogenian bimodal volcanism and related sulfide ores in the Arabian-Nubian Shield: An example from the Dendekan prospect in the Eastern Desert of Egypt

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