Science, Space and Technology News 2024
Solar radiation affects Earth’s interior by changing the redox state of arc magma, influenced by the subduction of carbon-rich marine organisms. This discovery links surface climate variations directly to deep Earth processes.
Vanadium and scandium levels of arc magma served as key indicators in the geochemical models. By compiling global geochemical data from Cenozoic arc magma and olivine-hosted melt inclusions, the researchers found a latitude-dependent redox distribution of arc magma with less oxidized magma in lower latitudes compared to those in higher latitudes.
“The observed pattern suggests a strong link between the surface environment and the redox state of the deep Earth, providing new directions for exploring the resources and environmental impacts of subduction systems at different latitudes,” said Hu Fangyang, corresponding author of the study.
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