Journal: Nature Communications
Affiliations: 3Go to article
Supercontinents and superplumes dance in sync
© Walter Myers/Stocktrek Images/Getty
A link has been discovered between the intensity of superplumes — massive plumes of abnormally hot rock welling up from deep within the Earth — and the cyclic formation and breakup of supercontinents on the Earth’s surface.
Superplumes are thought to spring from two gigantic piles of hot rocks located nearly 3,000 kilometers beneath our feet. There has been much debate about how they are related to supercontinents on the Earth’s surface, which repeatedly form and break up in a cycle roughly 500 to 700 million years long.
Three researchers at Curtin University in Western Australia have found evidence that superplumes undergo a similar cycle to supercontinent formation, suggesting that the two phenomena are related. They did this by using the abundances of nickel, chromium and iron in more than 40,000 basalt rocks as a ‘fingerprint’ to trace superplume activity through the eons.
- Nature Communications 10, 5270 (2019). doi: 10.1038/s41467-019-13300-4
|Earth Dynamics Research Group, Curtin University, Australia||0.44|
|The Institute for Geoscience Research (TIGeR), Curtin University, Australia||0.44|
|Department of Geology, Tanta University, Egypt||0.11|