Plate Tectonics, Mixed Heating Convection and the Divergence of Mantle and Plume Temperatures

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1130/G50309.1. This is version 4 of this Preprint.

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Authors

Johnny Seales, Adrian Lenardic, Julian Garrido

Abstract

Petrological data indicate that upper mantle and mantle plume temperatures diverged 2.5 billion years ago. This has been interpreted as plate tectonics initiating at 2.5 Ga with Earth operating as a single plate planet before then. We take an Occam’s razor view that the continuous operation of plate tectonics can explain the divergence. We validate this hypothesis by comparing petrological data to results from mixed heating mantle convection models in a plate tectonic mode of mantle cooling. The comparison shows that the data are consistent with plate tectonics operating over geologic history.

DOI

https://doi.org/10.31223/X5234K

Subjects

Earth Sciences, Physical Sciences and Mathematics

Keywords

Thermal history, plate tectonics

Dates

Published: 2022-04-14 03:10

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License

CC BY Attribution 4.0 International

Additional Metadata

Conflict of interest statement:
None