Modelling the evolution of the Eromanga Sea in the context of tectonics, geodynamics and surface processes

Lauren Harington from School of Geoscience and EarthByte Group gives presentation a Seminar on her Honours project “Modelling the evolution of the Eromanga Sea in the context of tectonics, geodynamics and surface processes” Watch full presentation here: Link   ABSTRACT: The Eromanga Sea is an epeiric, epicontinental seaway that dominated the eastern Australian landscape during the Cretaceous. Previous … Read more…

The Mapping Sciences Institute of Australia (NSW Division): Annual MSIA Seminar

The Mapping Sciences Institute of Australia (NSW Division) recently hosted its Annual MSIA Seminar at the Aspire Hotel in Ultimo, celebrating its 65th year promoting mapping. Prof. Dietmar Müller gave a presentation on “Using big data analytics to reveal what controls seabed geology”. World’s ocean basins contain a rich and nearly continuous record of environmental fluctuations … Read more…

A reconstruction of the Eurekan Orogeny incorporating deformation constraints

Author List:  Austin Gion, Simon Williams, Dietmar Müller Citation: Gion, A.M., Williams, S.E. and Müeller, R.D., 2017. A reconstruction of the Eurekan Orogeny incorporating deformation constraints. Tectonics, 36(2), pp.304-320. Abstract: The Eurekan Orogeny records Paleogene convergence between Greenland and the Canadian Arctic. The complexity of the region, well represented by the disputed magnitude of Cenozoic sinistral displacement of … Read more…

A global review and digital database of large-scale extinct spreading centers

Author List: Sarah MacLeod, Simon Williams, Kara Matthews, Dietmar Müller and Xiaodong Qin Citation: MacLeod, S.J., Williams, S.E., Matthews, K.J., Müller, R.D. and Qin, X., 2017. A global review and digital database of large-scale extinct spreading centers. Geosphere, pp.GES01379-1. Abstract: Extinct mid-ocean ridges record past plate boundary reorganizations, and identifying their locations is crucial to developing a better understanding of the … Read more…

Kinematic constraints on the Rodinia to Gondwana transition

Author List: Andrew Merdith, Simon Williams, Dietmar Müller & Alan Collins. Citation: Merdith, Andrew & Williams, Simon & Müller, Dietmar & Collins, Alan. (2017). Kinematic constraints on the Rodinia-Gondwana transition. Precambrian Research. 299. . 10.1016/j.precamres.2017.07.013. Abstract: Earth’s plate tectonic history during the breakup of the supercontinent Pangea is well constrained from the seafloor spreading record, but evolving plate configurations during … Read more…

Influence of mantle flow on the drainage of eastern Australia since the Jurassic period

Author List: Tristan Salles, Nicolas Flament & Dietmar Müller. Citation: Salles, Tristan & Flament, Nicolas & Müller, Dietmar. (2017). Influence of mantle flow on the drainage of eastern Australia since the Jurassic Period. Geochemistry, Geophysics, Geosystems. 18. . 10.1002/2016GC006617. Abstract:  Recent studies of the past eastern Australian landscape from present-day longitudinal river profiles and from mantle flow models … Read more…

Dynamic topography and eustasy controlled the paleogeographic evolution of northern Africa since the mid-Cretaceous

Author List: Nicholas Barnett-Moore, Rakib Hassan, Dietmar Müller, Simon Williams & Nicolas Flament. Citation: Barnett-Moore, Nicholas & Hassan, Rakib & Müller, Dietmar & Williams, Simon & Flament, Nicolas. (2017). Dynamic topography and eustasy controlled the paleogeographic evolution of northern Africa since the mid Cretaceous. Tectonics. . 10.1002/2016tc004280. Abstract: Northern Africa underwent widespread inundation during the Late Cretaceous. Changes … Read more…

Origin and evolution of the deep thermochemical structure beneath Eurasia

Author List: Nicolas Flament, Simon Williams, Dietmar Müller, Michael Gurnis & Dan Bower. Citation: Flament, Nicolas & Williams, Simon & Müller, Dietmar & Gurnis, Michael & J. Bower, Dan. (2017). Origin and evolution of the deep thermochemical structure beneath Eurasia. Nature Communications. 8. . 10.1038/ncomms14164. Abstract: A unique structure in the Earth’s lowermost mantle, the Perm Anomaly, was … Read more…

The origin of contractional structures in extensional gneiss domes

Author List: Patrice Rey, Luke Mondy, Guillaume Duclaux, Christian Teyssier, Donna Whitney, Marie Bocher, cécile Prigent. Citation: Rey, Patrice & Mondy, L & Duclaux, G & Teyssier, Christian & Whitney, Donna & Bocher, Marie & Prigent, cécile. (2017). The origin of contractional structures in extensional gneiss domes. 45. 263-266. 10.1130/G38595. Abstract: The juxtaposition of domains of shortening and extension at different … Read more…

The Encyclopedia of Marine Geosciences

The Encyclopedia of Marine Geosciences was selected for the 2017 Mary B. Ansari Best Geoscience Research Resource Work Award of The Geoscience Information Society (GSIS). The formal award will be given at the GSA 2017 conference in October in Seattle/USA. EarthByters Dietmar Muller and Maria Seton contributed two chapters on “Paleophysiography of Ocean Basins” and “Plate Motion”. This Encyclopedia … Read more…

Global patterns in Earth’s dynamic topography since the Jurassic: the role of subducted slabs

Author List: Michael Rubey, Sascha Brune, Christian Heine, Rhodri Davies, Simon Williams, and Dietmar Müller. Citation: Rubey, M., Brune, S., Heine, C., Davies, D. R., Williams, S. E., and Müller, R. D.: Global patterns in Earth’s dynamic topography since the Jurassic: the role of subducted slabs, Solid Earth, 8, 899-919, https://doi.org/10.5194/se-8-899-2017, 2017. Abstract: We evaluate the spatial … Read more…

Tectonic speed limits from plate kinematic reconstructions

Abstract 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 … Read more…

Earth is estimated to be around 4.5 billion years old, with life first appearing around 3 billion years ago.

EarthByter Andrew Merdith, Alan Collins from the Univ. of Adelaide and colleagues produced an animated plate tectonic map that changes the history of our planet as we know it. Of course it’s not just an animation, it’s an elaborate computer model that took years to be built, assimilating tons of geological and geophysical observations, in a … Read more…

The deep Earth origin of the Iceland plume and its effects on regional surface uplift and subsidence

Abstract The present-day seismic structure of the mantle under the North Atlantic Ocean indicates that the Iceland hotspot represents the surface expression of a deep mantle plume, which is thought to have erupted in the North Atlantic domain during the Palaeocene. The spatial and temporal evolution of the plume since its eruption is still highly … Read more…

Evolution of the global network of tectonic plates 200 million years ago to present

This animation shows the tesselation of the surface of the Earth over the last 200 million years as an evolving "jigsaw puzzle" of plates. Tectonic plates, the pieces of Earth's broken outer shell, are all unequal in size. Today seven plates, including the Pacific Ocean and Africa as the largest plates, account for 94% of the surface while the remaining 6% are occupied by a multitude of small plates, such as Iberia and the Philippine Plate.

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Simulation of mantle convection and evolving tectonic plate network

Simulation of deep earth convection with blue colours in the interior outlining sinking subducted slabs and red colours outlining rising plumes in the Earth’s interior, while the system of tectonic plates at the surface is evolving dynamically, with red colours at the surface outlining evolving plate boundaries, corresponding to relatively low viscosity while the stable interior of the plates has a higher viscosity, shown in green.

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Large-scale dynamic surface topography of Australia since 150 million years ago

This animation shows a model for the mantle-convection-driven component of Australian surface topography (Müller et al., Earth Planet. Sci. Lett., 2016). The model was calibrated against four locations in the Eastern Highlands of Australia where surface uplift had been estimated from river profile modelling by Czarnota et al. (J. Geophys. Res. 2014).

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Absolute plate motions and age of the ocean crust around Australia since 150 million years ago

This animation shows a model of absolute plate motions and the age of the ocean crust through time centered on Australia using a plate model from Müller et al. (Annual Review of Earth and Planetary Science, 2016). The animation corresponds to snapshots of the tectonic evolution portrayed here as shown in Fig. 1 of Müller et al. (Earth Planet. Sci. Lett., 2016).

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Reconstruction of the CGMW2010 geological map of the world – Atlantic Ocean

This animation reconstructs the CGMW (Bouysse, 2010) geology of the Atlantic Ocean region from 200 Ma to present, using the GPlates software and the plate model by Seton et al. (Earth-Science Reviews, 2012) with modifications in the Indian Ocean by Gibbons et al. (Gondwana Research, 2015). An interactive display of this reconstruction and some additional information can be found on the GPlates Portal.

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Reconstruction of the CGMW2010 geological map of the world – Indian Ocean

This animation reconstructs the CGMW (Bouysse, 2010) geology of theIndian Ocean region from 200 Ma to present, using the GPlates software and the plate model by Gibbons et al. (Gondwana Research, 2015) for the Indian Ocean. An interactive display of this reconstruction and some additional information can be found on the GPlates Portal.

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Reconstruction of the CGMW2010 geological map of the world – Antarctic region

This animation reconstructs the CGMW (Bouysse, 2010) geology of the circum-Antarctic region from 120 Ma to present, using the GPlates software and the plate model by Seton et al. (Earth-Science Reviews, 2012) with modifications in the Indian Ocean by Gibbons et al. (Gondwana Research, 2015). An interactive display of this reconstruction and some additional information can be found on the GPlates Portal.

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Reconstruction of the CGMW2010 geological map of the world – Arctic region

This animation reconstructs the CGMW (Bouysse, 2010) geology of the circum-Arctic region from 200 Ma to present, using the GPlates software and the plate model by Shephard et al. (Earth-Science Reviews, 2013). Some overlaps of geological elements are caused by small imperfections in the plate polygons published with this plate model. An interactive display of this reconstruction and some additional information can be found on the GPlates Portal.

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Australian paleotopography 70 million years ago to present

This quicktime animation accompanies the paper by Heine, C., Müller, R.D., DiCaprio, L. and Steinberger, B. (2010), Integrating deep Earth dynamics in paleogeographic reconstructions of Australia, Tectonophysics, 483, 135-150. The animation is based on a combination of a present-day digital elevation model corrected for time-dependent sediment thickness in some key areas combined with a model for Australia's plate motion over a convecting mantle, resulting in topography modulated by mantle convection-driven dynamic surface topography back in time and a eustatic sea model (see paper for details).  

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Hawaiian plume motion through geological time

The video, created by Rakib Hassan, shows the southward motion of the modelled Hawaiian plume over geological time and the evolution of its tilt. Note the fast southward motion of the plume before 50 Ma, driven by the southward motion of its root at the northern edge of the Pacific Large Low-Shear Velocity Province (LLSVP). This motion came to a halt after 50 Ma. The black contour marks the 75% chemical concentration isosurface 100 km above the core mantle boundary. 

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