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How Old Is Plate Tectonics? Signals From The Mantle

Source info:

Author: Suvrat Kher
Date: 2020-06-30 17:10:00
Blog: Reporting on a Revolution
URL: http://suvratk.blogspot.com/2020/06/how-old-is-plate-tectonics-signals-from.html

Summary:

A recent study has used the geochemistry of Archean basalts and komatites to suggest that plate tectonics began by 3.2 billion years ago. The chemical composition of these two volcanic rocks points to active transfer of elements from the crust into the deep mantle by this time. The authors argue that this mass transfer from surface to the interior can most efficiently be achieved only via

Content analysis:

Keywords:

geology

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