ArticleProceedings of the National Academy of Sciences of the United States of America2025
Water-rich incipient melt of the deep upper mantle indicates locally preserved low-velocity zones above the 410 km discontinuity.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Upper mantle low-velocity layer tied to volatile-charged carbonate melts.Science advances · 2026Article
- Low melt viscosity enables melt doublets above the 410-km discontinuity.Nature communications · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Seismic low-velocity layers (LVLs), frequently attributed to hydrous-silicate melts, are detected globally but exhibit lateral discontinuities. Geophysical and laboratory studies of water content in the mantle transition zone (MTZ) and upper mantle solubility limits suggest these layers likely form through global dehydration melting near the 410 km discontinuity (D410). A key hypothesis posits that melts form globally but are preserved only where melt stability permits retention. However, challenges in quenching melts into glass or fine-grained crystals at mantle pressures have precluded precise determination of melt composition, fueling debates over the mechanisms governing LVLs' sporadic distribution. Here, we developed a fast-quenching high-pressure cell assembly to synthesize hydrous glasses or fine-grained quench crystals at pressures >10 GPa, enabling high-precision analysis of incipient melt composition. Experiments at 13 GPa reveal that the 410 melt contains 43 mol% H
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.