ArticleNature communications2022
Coexisting divergent and convergent plate boundary assemblages indicate plate tectonics in the Neoarchean.
Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Water-induced mantle overturn explains high Archean paleointensities.National science review · 2026Article
- Lithospheric thickness records tectonic evolution by controlling metamorphic conditions.Science advances · 2023Article
- Changes in orogenic style and surface environment recorded in Paleoproterozoic foreland successions.Nature communications · 2023Article
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6 authors.
Funding
Abstract
The coexistence of divergent (spreading ridge) and convergent (subduction zone) plate boundaries at which lithosphere is respectively generated and destroyed is the hallmark of plate tectonics. Here, we document temporally- and spatially-associated Neoarchean (2.55-2.51 Ga) rock assemblages with mid-ocean ridge and supra-subduction-zone origins from the Angou Complex, southern North China Craton. These assemblages record seafloor spreading and contemporaneous subduction initiation and mature arc magmatism, respectively, analogous to modern divergent and convergent plate boundary processes. Our results provide direct evidence for lateral plate motions in the late Neoarchean, and arguably the operation of plate tectonics, albeit with warmer than average Phanerozoic subduction geotherms. Further, we surmise that plate tectonic processes played an important role in shaping Earth's surficial environments during the Neoarchean and Paleoproterozoic.
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