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Research Highlights

Spencer_NatGeosci

New research backs ‘lull’ in the geologic record, Earth’s mid-life crisis

Published in Nature Geoscience, recent research backs claims that the Earth experienced a ‘geological lull’ in its development around 2.3 to 2.2 billion years ago.

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GEOLOGY Jan2018

A piece of America found in northern Australia: Legacy of the 1.6-billion-year-old supercontinent Nuna

Some recently published results in the journal GEOLOGY links North Queensland to North America at 1.6 billion years ago during the supercontinent Nuna.

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Lone plume modeling

The formation of mantle “lone plumes”

The Hainan plume has been used as an example to investigate the feasibility of lone plumes being generated by subducting slabs in the mantle downwelling zone using 3D geodynamic modelling.

 

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Northeastern Gondwana

An Australian source for Pacific-Gondwana zircon

Research published in the journal GEOLOGY revealed the Paterson-Petermann Orogen of Central Australia to be the major source for the “characteristic Pacific-Gondwana zircons”.

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UAE-Oman Ophiolite

Finding melted mud in the mantle

Sediment abundance in mantle-derived melt is generally low and difficult to detect. Granite sampled from an exhumed mantle section found in the Oman-UAE ophiolite has provided evidence for the melting of subducted sediment.

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LIP Barcode of Yilgarn

LIP barcoding the Yilgarn Craton

A newly identified, NW-trending, mafic dyke swarm (Boonadgin dyke swarm, 1.9 Ga) in southwestern Yilgarn Craton raise the possibility of a link with India.

 

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VGPs and LLSVPs

Lower mantle influence on geomagnetic field reversals

While paleomagnetic data is generally used to reconstruct the continental blocks throughout Earth’s history there are other ways to deduce valuable information from the changing geomagnetic field on the long term evolution of the Earth.

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