ArticleProceedings of the National Academy of Sciences of the United States of America2022
Archean eclogite-facies oceanic crust indicates modern-style plate tectonics.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed.
- Links between the Archean hydrosphere and Earth's interior.Nature communications · 2026Article
- Paleomagnetic evidence for Neoarchean plate mobilism.Nature communications · 2024Article
- Subaerial crust emergence hindered by phase-driven lower crust densification on early Earth.Science advances · 2024Article
- Sediment subduction in Hadean revealed by machine learning.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Lithospheric thickness records tectonic evolution by controlling metamorphic conditions.Science advances · 2023Article
- Earliest systematic coal exploitation for fuel extended to ~3600 B.P.Science advances · 2023Article
- Passive margins in accreting Archaean archipelagos signal continental stability promoting early atmospheric oxygen rise.Nature communications · 2022Article
- Reply to Zou et al.: Neoarchean eclogite-facies oceanic crust in the North China Craton.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- No evidence for Archean eclogite-facies metamorphism.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Abstract
SignificanceThe onset time of plate tectonics is highly debated in the Earth sciences. A key indicator of modern-style plate tectonics, with deep subduction of oceanic plates, is the presence of eclogite (oceanic crust metamorphosed at high-pressure and low-temperature) in orogenic belts. Since no orogenic eclogites older than 2.1 billion y are currently documented, many scientists argue that modern plate tectonics started only 2.1 billion y ago (Ga). We document an Archean orogenic eclogite, providing robust evidence that subduction of oceanic crust reached to at least 65 to 70 km in depth at circa 2.5 Ga. This extends the known age of subduction-related eclogite-facies metamorphism back 400 My, showing that modern-style plate tectonics operated by the close of the Archean.
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