ArticleNature communications2021
Molybdenum isotopes unmask slab dehydration and melting beneath the Mariana arc.
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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Who cites it
4 citing papers in PubMed, 83 citations in OpenAlex.
- Heterogeneous slab mantle hydration controls the chemical architecture of the Kamchatka arc.Science advances · 2026Article
- Formation of the 15 Å phase as the most expanded hydrated mineral in cold subduction zone.Nature communications · 2025Article
- Magnesium and boron isotope evidence for the generation of arc magma through serpentinite-mélange melting.National science review · 2025Article
- Boron isotopes in boninites document rapid changes in slab inputs during subduction initiation.Nature communications · 2022Article
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Authors and funding
8 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
How serpentinites in the forearc mantle and subducted lithosphere become involved in enriching the subarc mantle source of arc magmas is controversial. Here we report molybdenum isotopes for primitive submarine lavas and serpentinites from active volcanoes and serpentinite mud volcanoes in the Mariana arc. These data, in combination with radiogenic isotopes and elemental ratios, allow development of a model whereby shallow, partially serpentinized and subducted forearc mantle transfers fluid and melt from the subducted slab into the subarc mantle. These entrained forearc mantle fragments are further metasomatized by slab fluids/melts derived from the dehydration of serpentinites in the subducted lithospheric slab. Multistage breakdown of serpentinites in the subduction channel ultimately releases fluids/melts that trigger Mariana volcanic front volcanism. Serpentinites dragged down from the forearc mantle are likely exhausted at >200 km depth, after which slab-derived serpentinites are responsible for generating slab melts.
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