Australian-Antarctic breakup and seafloor spreading: Balancing geological and geophysical constraints

Abstract  The motion of diverging tectonic plates is typically constrained by geophysical data from preserved ocean crust. However, constraining plate motions during continental rifting and the breakup process relies on balancing evidence from a diverse range of geological and geophysical observations, often subject to differing interpretations. Reconstructing the evolution of rifting and breakup between Australia and Antarctica epitomizes the challenges involved in … Read more…

EarthByte and the Basin GENESIS Hub welcome Dr Ben Mather

EarthByte and the Basin GENESIS Hub welcome Dr Ben Mather who started last week as a postdoc working on Badlands-Underworld integration, landscape evolution modelling of the Sydney Basin, and implementing new groundwater flow capabilities in Underworld. Ben will be with the team until the end of 2020. Welcome to the EarthByte and the Basin GENESIS Hub, Ben! … Read more…

Oil Search Summer Internship Program

Oil Search’s Reservoir Development team is currently seeking applicants who are interested in completing a Summer Internships project from early December 2018 to March 2019. The Reservoir Development team is tasked with capturing and integrating all geological, reservoir, fluid and wellbore characteristics in order that we can optimise the reserves in our operated oil fields, … Read more…

New interactive rift obliquity globe on the GPlates Portal

The ARC Basin Genesis Hub has made a new interactive rift obliquity globe available on the GPlates Portal at http://portal.gplates.org/cesium/?view=rift_ov, based on a recently published paper entitled “Oblique rifting: the rule, not the exception” in Solid Earth. This virtual globe visualizes extension velocities and obliquities within Earth’s major post-Pangea rift systems. Each circle depicts the … Read more…

Dietmar Muller receives NSW Premier’s Prize for Excellence in Mathematics, Earth Sciences, Chemistry or Physics

Five University of Sydney researchers have been recognised for their work by the NSW Premier Gladys Berejiklian.  Amongst them was Dietmar Muller who received the NSW Premier’s Prize for Excellence in Mathematics, Earth Sciences, Chemistry or Physics at an awards ceremony held at Government House. http://www.chiefscientist.nsw.gov.au/premiersprizes/2018-category-winners This is a marvellous recognition of the fundamental role … Read more…

Prof. Dietmar Muller awarded the Excellence Professor Award from the German Petersen Foundation for 2019

Congratulations to Prof Dietmar Muller who has been awarded the Excellence Professor Award from the German Petersen Foundation for 2019. The award comes with €20,000 (about AU$32,000) and an invitation to spend 6-8 weeks at GEOMAR in Kiel to present a series of lectures, a short course, and to continue/launch collaborations in the field of marine geoscience. … Read more…

Kaj Hoernle awarded Gustav Steinmann Medal at annual meeting of the German Geological Society

Long-term EarthByte collaborator Kaj Hoernle has been awarded the Gustav Steinmann Medal at the recent annual meeting of the German Geological Society. The medal, which has been awarded since 1938, honours outstanding overall achievements in the geosciences. Kaj studied geology, petrology and geochemistry at Columbia University and at UC Santa Barbara. Since 1994 he has … Read more…

Dietmar Muller gives public Accelerated Computing for Innovation talk on “Understanding Earth System Evolution – connecting Deep to Surface Processes”

The Earth’s composition and location relative to the sun has resulted in a thermal, structural and geochemical evolution that is unique in the solar system, forming a resource-rich, oxygenated habitable planet. Human civilization is built on the premise of relatively stable climate and coastlines Yet the geological record reveals numerous episodes of enormous change, innovation, … Read more…

EarthByte Honours and Masters Projects 2019

EarthByte globe icon

EarthByte has now released a list of Honours/Masters projects to be offered in 2019. These projects are outlined below. Project Title Supervisor(s) How is landscape complexity driving biodiversity over geological time scales? Tristan Salles & Patrice Rey How well are tectonic and climatic signals preserved in the stratigraphic record? Tristan Salles & Claire Mallard Vertical motions … Read more…

Does the sea level or the sun drive volcanic seafloor topography?

Modelling shows what causes abyssal hills 2.5km below sea level Computer modelling shows climate- and sea-level cycles are not responsible for the ‘hills’ and ‘valleys’ at the bottom of the sea – a hypothesis that would have mapped a path to uncovering Earth’s climate history. Half a century after discovering how plate tectonics works, the … Read more…

The ARC Basin GENESIS Hub: connecting solid Earth evolution to sedimentary basins

The August edition of Preview by the Australian Society of Exploration Geophysicists features an article entitled “The ARC Basin GENESIS Hub: connecting solid Earth evolution to sedimentary basins”.  It highlights the work of Early Career Researchers in the ARC Basin Genesis Hub, including research fellows and PhD students. You can download and read the article here. … Read more…

PaleoDEM Resource – Scotese and Wright (2018)

A paleo-digital elevation model (paleoDEM) is a digital representation of paleotopography and paleobathymetry that has been “reconstructed” back in time. This report describes how the 117 PALEOMAP paleoDEMS (see Supplementary Materials) were made and how they can be used to produce detailed paleogeographic maps. The paleoDEMS describe the changing distribution of deep oceans, shallow seas, … Read more…

GPlates 2.1 released (and pyGPlates revision 18)

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GPlates 2.1 was released today! Many bugs have been fixed, including the computation of crustal thinning factors. NetCDF-4 is now supported for raster import/export, i.e. GPlates 2.1 can now read and write GMT-5 grids. Many thanks to the GPlates development team and especially to Sabin Zahirovic without whose tireless efforts GPlates 2.1 would not have … Read more…

Two EarthByters received awards at the 2018 Faculty of Science Awards Reception

Last Tuesday night, two EarthByters received awards at the 2018 Faculty of Science Awards Reception. Mandi Thran, EarthByte PhD student, received the Postgraduate Research Prize for Outstanding Academic Achievement. This prize is awarded by Faculty of Science on the basis of outstanding senior authorship of a research publication during the early phases of candidature. Additionally, … Read more…

Exploring coral reef responses to millennial-scale climatic forcings: insights from the 1-D numerical tool pyReef-Core v1.0

In a paper published this week in European Geosciences Union – EGUGMD Journal, Tristan Salles, Jodie Rae, Jody M Webster & Belinda Dechnik present a 1-D model of coral reefs’ evolution over centennial to millennial timescales. The model allows to estimate the effects of environmental conditions (such as oceanic variability, sedimentation rate, sea-level fluctuations or tectonics) and ecological coral competition on reef … Read more…

GPlates: Building a Virtual Earth Through Deep Time

A paper about the GPlates software has been published in G-cubed. The GPlates virtual globe software provides the capability to reconstruct geodata attached to tectonic plates to develop and modify models that describe how the plates and their boundaries have evolved through time. It allows users to deform plates and to visualize surface tectonics in … Read more…

Large igneous provinces contribute to ups and downs in atmospheric carbon dioxide

About 250 million years ago, a massive volcanic eruption flooded modern-day Siberia with lava, creating the Siberian Traps, giant plateaus made of multiple layers of lava. The eruption also released huge quantities of carbon dioxide into the atmosphere that rapidly altered the climate and triggered the Permian-Triassic mass extinction event that wiped out more than … Read more…

Dietmar Muller presents at CONASTA (Science Teachers of Australia Annual Conference)

Even rocks have stories to tell … a message delivered by Dietmar Muller to about 400 teachers from across Australia at CONASTA (Science Teachers of Australia Annual Conference) today on the Sydney Uni campus. This presentation was a warm-up act for Alan Finkel’s following talk on “content matters”, at high schools and universities. Abandon content … Read more…

Student Down Under studies impact of underwater currents – Ryan Gibbs

By Ryan Gibbs A devotion to the ocean has led a Jamestown woman from the smallest state to the smallest continent. Amanda Thran, a doctoral candidate at the University of Sydney, was awarded the Postgraduate Research Prize for Outstanding Academic Achievement at Australia’s oldest college. The 25-year-old from West Reach Drive was recognized for her … Read more…

Deep Carbon Observatory Cambridge-Sydney workshop

Almost 30 members of the Deep Carbon Observatory Science Network met on 5 and 6 April 2018 at the University of Cambridge, UK to discuss ways of linking plate tectonic reconstructions to aspects of the deep carbon cycle over geological time. Sabin Zahirovic (EarthByte, University of Sydney, Australia), DCO Synthesis Group 2019 Chair Marie Edmonds … Read more…

Aftershocks hit Papua New Guinea as it recovers from a remote major earthquake

Another powerful aftershock hit Papua New Guinea this weekend as the recovery effort continues following February’s deadly magnitude 7.5 earthquake, with many thousands of people dependent on humanitarian aid. Aid organisations such as CARE Australia and UNICEF are still seeking donations. The Australian government has sent medical staff and other support to help. Some have criticised the PNG government’s efforts as “too slow”. But the … Read more…

Untangling The Role Of Climate On Sediment And Reef Evolution Over Millennial Timescales

Climatic variability like precipitation changes or increase in extreme events such as storms and tropical cyclones is known to significantly modify the Earth’s surface. Yet, our understanding of how sediment dynamics and reef evolution might respond to these changes is still limited. In a recent study, a team of researchers from the University of Sydney’s … Read more…

Palaeolatitudinal distribution of lithologic indicators of climate in a palaeogeographic framework

Citation: Cao, W., Williams, S., Flament, N., Zahirovic, S., Scotese, C., and Müller, R. D., 2018. Paleolatitudinal distribution of lithologic indicators of climate in a paleogeographic framework. Geological Magazine, 1-24. Abstract: Whether the latitudinal distribution of climate-sensitive lithologies is stable through greenhouse and icehouse regimes remains unclear. Previous studies suggest that the palaeolatitudinal distribution of palaeoclimate … Read more…

No Change in Southern Ocean Circulation in the Indian Ocean From the Eocene Through Late Oligocene

Author List: Nicky M. Wright , Howie D. Scher , Maria Seton , Claire E. Huck , and Brian D. Duggan Citation: Wright, N. M., Scher, H. D., Seton, M., Huck, C. E., & Duggan, B. D. (2018). No change in Southern Ocean circulation in the Indian Ocean from the Eocene through late Oligocene. Paleoceanography … Read more…

RV Investigator voyage funded!

Congratulations to EarthByters Maria Seton (applicant) and Simon Williams, Jo Whittaker (Chief Scientist, UTas) and the rest of the team for their successful application for ship time on Australia’s national marine vessel, the RV Investigator! The 28 day voyage will set sail in August 2019 to investigate hotspot dynamics in the Coral Sea. One of … Read more…

Models are as hot as rocks!

In a recent paper in JGR-Solid Earth, EarthByter Ömer Faruk Bodur and colleagues show that mantle lithosphere rheology has a primary control on the subduction style (i.e., one-sided vs. double-sided subduction) and strongly affects the pressure-temperature conditions of metamorphic rocks that can be buried >100 km depth and exhume to the surface! This long journey … Read more…

2018 supercomputing resources

The EarthByte group has been awarded 5.3 million computing hours, representing the equivalent of k$AU212, to carry out research for the Basin GENESIS Hub on the supercomputers Raijin (National Computational Infrastructure) and Magnus (Pawsey Supercomputing Centre) for 2018 through the National Computational Merit Allocation Scheme (4.7 MSUs) and the Intersect HPC Resource Allocation Round (600 kSUs).