ArticleNature communications2021
Alpine-style nappes thrust over ancient North China continental margin demonstrate large Archean horizontal plate motions.
Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 59 citations in OpenAlex.
- Archaean multi-stage magmatic underplating drove formation of continental nuclei in the North China Craton.Nature communications · 2024Article
- Changes in orogenic style and surface environment recorded in Paleoproterozoic foreland successions.Nature communications · 2023Article
- Passive margins in accreting Archaean archipelagos signal continental stability promoting early atmospheric oxygen rise.Nature communications · 2022Article
- Archean eclogite-facies oceanic crust indicates modern-style plate tectonics.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
10 authors at 2 institutions in 2 countries.
Funding
Abstract
Whether modern-style plate tectonics operated on early Earth is debated due to a paucity of definitive records of large-scale plate convergence, subduction, and collision in the Archean geological record. Archean Alpine-style sub-horizontal fold/thrust nappes in the Precambrian basement of China contain a Mariana-type subduction-initiation sequence of mid-ocean ridge basalt blocks in a 1600-kilometer-long mélange belt, overthrusting picritic-boninitic and island-arc tholeiite bearing nappes, in turn emplaced over a passive margin capping an ancient Archean continental fragment. Picrite-boninite and tholeiite units are 2698 ± 30 million years old marking the age of subduction initiation, with nappes emplaced over the passive margin at 2520 million years ago. Here, we show the life cycle of the subduction zone and ocean spanned circa 178 million years; conservative plate velocities of 2 centimeters per year yield a lateral transport distance of subducted oceanic crust of 3560 kilometers, providing direct positive evidence for horizontal plate tectonics in the Archean.
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