This accumulating pulse of geological events includes volcanic activity, mass extinctions, plate reorganizations, sea level rise, and catastrophic tidal cycles of 27.5 million years.
Fortunately, the research team noted that Earth has another 20 million years before the geological activity starts to pulse again.
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“Many experts believe that geological events occur randomly but our study provides evidence that these geological events are correlated and not random,” said Michael Rampino, a New York University geologist who was quoted as saying Science AlertSunday (27/3/2022).
The team performed the analysis at the age of 89 geological events well understood of the last 260 million years. With more than eight world-changing events, in a geologically small time span, forming the ‘pulse’ of disaster.
These events include the timing of marine and non-oceanic extinctions, major oceanic anoxic events, continental flood basalt eruptions, sea level fluctuations, global pulses of intraplate magmatism, and timing of changes in the rate of seafloor spreading and plate reorganization.
“Our results show that global geological events are generally correlated. It appears to be coming in a pulse with an underlying about 27.5 million year cycle,” he said.
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