Dr Nico Flament receives a Discovery Early Career Researcher Award

Nicolas Flament

Nicolas FlamentCongratulations to Dr Nicolas Flament for being awarded a Discovery Early Career Researcher Award (DECRA) from the Australian Research Council!

Below are some details about Nico’s project (2016-2019) entitled ‘The geodynamics of past sea level changes‘:

This project is designed to quantify the effect of flow deep within Earth’s interior on past sea-level changes and on the flooding history of Australia over the last 550 million years. The rise and fall of sea level has shaped our planet over time. This project plans to combine recent advances in tectonic reconstructions and dynamic Earth models with the global and Australian rock record. … Read more…

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Influence of subduction history on South American topography

Case 4 paleotopography 16MaCitation
Flament, N., Gurnis, M., Müller, R. D., Bower, D. J., & Husson, L. (2015). Influence of subduction history on South American topography. Earth and Planetary Science Letters, 430, 9-18. doi: 10.1016/j.epsl.2015.08.006.

Abstract
The Cenozoic evolution of South American topography is marked by episodes of large-scale uplift and subsidence not readily explained by lithospheric deformation. The drying up of the inland Pebas system, the drainage reversal of the Amazon river, the uplift of the Sierras Pampeanas and the uplift of Patagonia have all been linked to the evolution of mantle flow since the Miocene in separate studies. Here we investigate the evolution of long-wavelength South American topography as a function of subduction history in a time-dependent global geodynamic model. This model is shown to be consistent with these inferred changes, as well as with the migration of the Chaco foreland basin depocentre, that we partly attribute to the inboard migration of subduction resulting from Andean mountain building. … Read more…

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Earth and Planetary Science Letters – Influence of subduction history on South American topography

Case 4 paleotopography 16Ma

Flament, N., Gurnis, M., Müller, R. D., Bower, D. J., & Husson, L. (2015). Influence of subduction history on South American topography. Earth and Planetary Science Letters, 430, 9-18. doi: 10.1016/j.epsl.2015.08.006. Influence of subduction history on South American topography

Opening of ARC Basin Genesis INDUSTRIAL TRANSFORMATION RESEARCH HUB

Basin GENESIS Hub opening group photo 19 August 2015

Basin GENESIS Hub opening group photo 19 August 2015The ARC Research Hub for Basin Geodynamics and Evolution of Sedimentary Systems (Basin GENESIS Hub) opened today at a reception held in the Charles Perkins Centre at the University of Sydney. The launch as attended by representatives from Universities, industry, Geoscience Australia, the ARC, the NCI and the Office of the NSW Chief Scientist and Engineer.

The Basin GENESIS Hub will use computer modelling to fine-tune our understanding of the nation’s sedimentary basins, which hold many of the natural resources we use in day-to-day life.

The research will be of fundamental importance to the geo-software industry used by exploration and mining companies, explains Hub Director Professor Dietmar Müller from the University of Sydney.  … Read more…

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Geochemisty, Geophysics, Geosystems – Provenance of plumes in mantle convection models

Hassan, R., Flament, N., Gurnis, M., Bower, D. J., & Müller, D. (2015). Provenance of plumes in global convection models. Geochemistry, Geophysics, Geosystems. doi: 10.1002/2015GC005751. Provenance of plumes in global convection models

Lord Howe Rise IODP workshop held at University of Sydney

Date: 2015 April 7-10 Venue: The University of Sydney Description: A science meeting at the University of Sydney was held to discuss details of the seven science themes in the Geoscience Australia (GA) – Japan Agency for Marine-Earth Science and Technology (JAMSTEC) initiated Lord Howe Rise IODP Pre-proposal, IODP proposal 871-Pre. The purpose of the meeting was to look … Read more…

Tectonic speed limits from plate kinematic reconstructions

Plate velocities summary figureCitation
Zahirovic, S., Müller, R. D., Seton, M., & Flament, N. (2015). Tectonic speed limits from plate kinematic reconstructions. Earth and Planetary Science Letters, 418, 40-52. doi:10.1016/j.epsl.2015.02.037.

Summary
The motion of plates and continents on the planet’s surface are a manifestation of long-term mantle convection and plate tectonics. Present-day plate velocities provide a snapshot of this ongoing process, and have been used to infer controlling factors on the speeds of plates and continents. However, present-day velocities do not capture plate behaviour over geologically representative periods of time. To address this shortcoming, we use a plate tectonic reconstruction approach to extract time-dependent plate velocities and geometries from which root mean square (RMS) velocities are computed, resulting in a median RMS plate speed of ~4 cm/yr over 200 Myr.  … Read more…

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Global plate and continental velocities since Pangea breakup

This animation portrays the motion of continents (grey, yellow, orange and red) and oceanic plates (blue) since Pangea breakup from 200 million years ago. The model is a modified version of the Seton et al.Citation Zahirovic, S., R. Müller, M. Seton, and N. Flament (2015), Tectonic speed limits from plate kinematic reconstructions, Earth and Planetary … Read more…

Geophysical Research Letters – Ridge subduction sparked reorganisation of the Pacific plate-mantle system 60-50 million years ago

Seton, M., Flament, N., Whittaker, J., Müller, R. D., Gurnis, M., & Bower, D. J. (2015). Ridge subduction sparked reorganization of the Pacific plate‐mantle system 60–50 million years ago. Geophysical Research Letters, 42(6), 1732-1740. doi: 10.1002/2015GL063057. Ridge subduction sparked reorganization of the Pacific plate‐mantle system 60–50 million years ago

Earth and Planetary Science Reviews – Absolute plate motions since 130 ma constrained by subduction zone kinematics

Williams, S., Flament, N., Müller, R. D., & Butterworth, N. (2015). Absolute plate motions since 130 Ma constrained by subduction zone kinematics. Earth and Planetary Science Letters, 418, 66-77. doi:10.1016/j.epsl.2015.02.026. Absolute plate motions since 130 Ma constrained by subduction zone kinematics

Supplementary resources for "Absolute plate motions since 130 Ma constrained by subduction zone kinematics"

Williams et al 2015 figure 3Citation
Williams, S., Flament, N., Müller, R. D., & Butterworth, N. (2015). Absolute plate motions since 130 Ma constrained by subduction zone kinematics. Earth and Planetary Science Letters, 418, 66-77. doi:10.1016/j.epsl.2015.02.026.

Summary
The supplementary data set comprise plate reconstructions from 130 Ma to present-day, designed to be used within the open-source reconstruction software GPlates.

There are eight sets of reconstructions. In each case, the relative plate motion (RPM) model is unchanged; the differences lie in the absolute plate motion (APM) model. This is expressed in the rotation file as the finite poles of rotation that describe motion of Africa relative to the Earth’s spin-axis. These files were the basis of the results presented in the EPSL paper.  … Read more…

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Supplementary resources for “Absolute plate motions since 130 Ma constrained by subduction zone kinematics”

Williams et al 2015 figure 3Citation
Williams, S., Flament, N., Müller, R. D., & Butterworth, N. (2015). Absolute plate motions since 130 Ma constrained by subduction zone kinematics. Earth and Planetary Science Letters, 418, 66-77. doi:10.1016/j.epsl.2015.02.026.

Summary
The supplementary data set comprise plate reconstructions from 130 Ma to present-day, designed to be used within the open-source reconstruction software GPlates.

There are eight sets of reconstructions. In each case, the relative plate motion (RPM) model is unchanged; the differences lie in the absolute plate motion (APM) model. This is expressed in the rotation file as the finite poles of rotation that describe motion of Africa relative to the Earth’s spin-axis. These files were the basis of the results presented in the EPSL paper.  … Read more…

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Earth and Planetary Science Letters – Tectonic speed limits from plate kinematic reconstructions

Zahirovic, S., Müller, R. D., Seton, M., & Flament, N. (2015). Tectonic speed limits from plate kinematic reconstructions. Earth and Planetary Science Letters, 418, 40-52. doi: 10.1016/j.epsl.2015.02.037. Tectonic speed limits from plate kinematic reconstructions

Physics of the Earth and Planetary Interiors – Assimilating lithosphere and slab history in 4-D Earth models

Bower, D. J., Gurnis, M., & Flament, N. (2015). Assimilating lithosphere and slab history in 4-D Earth models. Physics of the Earth and Planetary Interiors, 238, 8-22. doi: 10.1016/j.pepi.2014.10.013. Assimilating lithosphere and slab history in 4-D Earth models

The Basin GENESIS Hub

Basin GENESIS Hub logo

The ARC Research Hub for Basin Geo-dynamics and Evolution of Sedimentary Systems (Basin Genesis Hub, BGH) brings together a broad range of expertise for the development and application of cutting-edge numerical modelling tools with the aim of improving the understanding of the formation and evolution of basins. The coupling of the evolution of mantle flow, … Read more…

Tectonophysics – Cenozoic uplift of South Western Australia as constrained by river profiles

Barnett-Moore, N., Flament, N., Heine, C., Butterworth, N., & Müller, R. D. (2014). Cenozoic uplift of south Western Australia as constrained by river profiles. Tectonophysics, 622, 186-197. doi: 10.1016/j.tecto.2014.03.010. Cenozoic uplift of south Western Australia as constrained by river profiles

Earth and Planetary Science Letters – Topographic assymetry of the South Atlantic from global models of mantle flow and lithospheric stretching

Flament, N., Gurnis, M., Williams, S., Seton, M., Skogseid, J., Heine, C., & Müller, R. D. (2014). Topographic asymmetry of the South Atlantic from global models of mantle flow and lithospheric stretching. Earth and Planetary Science Letters, 387, 107-119. dx.doi.org/10.1016/j.epsl.2013.11.017. Topographic asymmetry of the South Atlantic from global models of mantle flow and lithospheric stretching … Read more…

Topographic asymmetry of the South Atlantic from global models of mantle flow and lithospheric stretching

Flament et al EPSL 2014 - FigureCitation
Flament, N., Gurnis, M., Williams, S., Seton, M., Skogseid, J., Heine, C., & Müller, R. D. (2014). Topographic asymmetry of the South Atlantic from global models of mantle flow and lithospheric stretching. Earth and Planetary Science Letters, 387, 107-119. dx.doi.org/10.1016/j.epsl.2013.11.017.

Abstract
The relief of the South Atlantic is characterized by elevated passive continental margins along southern Africa and eastern Brazil, and by the bathymetric asymmetry of the southern oceanic basin where the western flank is much deeper than the eastern flank. We investigate the origin of these topographic features in the present and over time since the Jurassic with a model of global mantle flow and lithospheric deformation. The model progressively assimilates plate kinematics, plate boundaries and lithospheric age derived from global tectonic reconstructions with deforming plates, and predicts the evolution of mantle temperature, continental crustal thickness, long-wavelength dynamic topography, and isostatic topography. … Read more…

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A review of observations and models of dynamic topography

Citation
Flament, N., Gurnis, M., & Müller, R. D. (2013). A review of observations and models of dynamic topography. Lithosphere, 5(2), 189-210. doi: 10.1130/L245.1

Flament-et-al_fig1Summary
The topography of Earth is primarily controlled by lateral differences in the density structure of the crust and lithosphere. In addition to this isostatic topography, flow in the mantle induces deformation of its surface leading to dynamic topography. This transient deformation evolves over tens of millions of years, occurs at long wavelength, and is relatively small (<2 km) in amplitude. Here, we review the observational constraints and modeling approaches used to understand the amplitude, spatial pattern, and time dependence of dynamic topography. … Read more…

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Precambrian Research – The evolution of the 87 Sr/86 Sr of marine carbonates does not constrain continental growth

Flament, N., Coltice, N., & Rey, P. F. (2013). The evolution of the 87 Sr/86 Sr of marine carbonates does not constrain continental growth. Precambrian Research, 229, 177-188. doi:10.1016/j.precamres.2011.10.009. The evolution of the 87 Sr/86 Sr of marine carbonates does not constrain continental growth