A new study in Geology suggests that subduction zones, where tectonic plates sink underneath each other, can spread like a contagion, shifting from one oceanic plate to another. This finding, based on geological records, illustrates how ancient subduction processes led to the formation of the Ring of Fire, a major area of earthquakes and volcanoes. The research also identifies the Dupal anomaly as critical evidence of this 'subduction infection' that has been affecting tectonic dynamics and shaping continents for millions of years.
The new study provides a rare ancient example of potential subduction infection, discovering evidence that neighboring collisions triggered East Asia's Ring of Fire.
The dying act of those closing oceans may have been to infect the Pacific plate and start it subducting westward under the Asian continent.
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