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Research Highlights

Machine learning approaches elucidate hemispherical dichotomy in global geochemical record

Members of the EDRG have applied machine learning approaches to analyse large sets of elemental and isotopic data of mantle-derived oceanic igneous rocks and plume-related samples. The results indicate that a north-south hemispherical subdivision is less favourable than defining the dichotomy between the African and Pacific mantle domains, which can best be explained by tectonic supercycles over the past one billion years involving two supercontinents and two superoceans.
The work had been published in Nature Geoscience.

Global mantle structure highlighting the two LLSVPs.

Anomalies in global mantle isotope values linked to the supercontinent-superocean cycle

Research undertaken by EDRG PhD student Piero de Sampaio has shown that trends in radiogenic isotope data of mid-ocean ridge and plume-induced basalts, particularly those of the African mantle domain, can be linked to geodynamic processes related to the supercontinent cycle.
The work, published in Nature's Communications earth & environment, is the first arising from Piero's PhD work. Congratulations Piero!

Present-day spatial distribution of ophiolites of the African mantle domain from which samples were used and colour-coded for age. From: Global mantle isotopic anomalies linked to supercontinent-superocean evolution for the past 700 million years

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Community Feature Article

 

Prof. Li was recently featured in an article discussing the work that we do in the Earth Dynamics Research Group. The article was produced by Futurum, a magazine and online platform aimed at inspiring young people to follow a career in science, technology, engineering, and mathematics (STEM).

The article also includes a link to an activity sheet for students and teachers. For more information, teaching resources, and course and career guides, see www.futurumcareers.com.

CCFS Short Course on Snowball Earth by Professor Paul Hoffman

A CCFS-sponsored short course on the global climatic phenomenon known as Snowball Earth was held at Curtin University on 15 July, 2016.

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Traveling Geologist

The work of previous EDRG team member, Chris Spencer, has seen him visit many exotic and remote locations around the world, documented on his travel blog Traveling Geologist. The page has now expanded to provide a platform for other Earth scientists to share their adventures – check out some of the incredible photos and stories.

Visit the website