A Study Shows Earth Has Heartbeat: Check the Fact Here
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A study published in late 2020 by the same authors suggested that this 27.5-million-year mark is when mass extinctions happen, too.
"This paper is quite good, but actually I think a better paper on this phenomenon was (a 2018 paper by) Muller and Dutkiewicz," tectonic geologist Alan Collins from the University of Adelaide, who wasn't involved in this research remarked.Â
That 2018 paper, by two researchers at the University of Sydney, looked at Earth's carbon cycle and plate tectonics, and also came to the conclusion that the cycle is approximately 26 million years long.
Collins explained that in this latest study, many of the events the team looked at are causal - meaning that one directly causes the other, thus some of the 89 events are related: for example, anoxic events causing marine extinction.
"Having said this 26-30 million year cyclicity does seem to be real and over a longer period of time – it also is not clear what is the underlying cause of it!," Collins added.Â
Other research from Rampino and his team have suggested comet strikes could be the cause, with one space researcher even suggesting Planet Nine is to blame.
But if Earth really does have a geologic 'heartbeat', it might be due to something a little closer to home.
"These cyclic pulses of tectonics and climate change may be the result of geophysical processes related to the dynamics of plate tectonics and mantle plumes, or might alternatively be paced by astronomical cycles associated with the Earth's motions in the Solar System and the Galaxy," the team wrote in their study.
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