ArticleScience advances2023
No evidence of supracrustal recycling in Si-O isotopes of Earth's oldest rocks 4 Ga ago.
Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Coupled sulfur-silicon isotopes reveal supracrustal origin of Archean continents.Nature communications · 2026Article
- Paleoarchean deep crustal hydration and oxidation induced by subduction-driven water recycling.Science advances · 2026Article
- Silicon isotopic signatures of granitoids support increased weathering of subaerial land 3.7 billion years ago.Communications earth & environment · 2025Article
- Zircon geochemistry from early evolved terranes records coeval stagnant- and mobile-lid tectonic regimes.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Archaean multi-stage magmatic underplating drove formation of continental nuclei in the North China Craton.Nature communications · 2024Article
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Identifying the oldest evidence for the recycling of hydrated crust into magma on Earth is important because it is most effectively achieved by subduction. However, given the sparse geological record of early Earth, the timing of first supracrustal recycling is controversial. Silicon and oxygen isotopes have been used as indicators of crustal evolution on Archean igneous rocks and minerals to trace supracrustal recycling but with variable results. We present Si-O isotopes of Earth's oldest rocks [4.0 billion years ago (Ga)] from the Acasta Gneiss Complex, northwest Canada, obtained using multiple techniques applied to zircon, quartz, and whole rock samples. Undisturbed zircon is considered the most reliable recorder of primary Si signatures. By combining reliable Si isotope data from the Acasta samples with filtered data from Archean rocks globally, we observe that widespread evidence for a heavy Si signature is recorded since 3.8 Ga, marking the earliest record of surface silicon recycling.
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