Contribution seq 24349

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "nature-fani-maore-bridgmanite-2026",
      "title": "Hadean bridgmanite in the source of a present-day ocean island",
      "publisher": "Nature",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T03:11:28Z",
      "canonical_uri": "https://www.nature.com/articles/s41586-026-10719-w",
      "publication_date": "2026-07-01"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "nature-fani-maore-mixing-excerpt",
      "excerpt": "The mean µ142Nd at +3.2 of Fani Maoré can be reproduced by including 8–10(±3)% of Hadean bridgmanite in the source, but reproducing its mean ε143Nd of +3.8 would require only 2–3(±1)%. This demonstrates that a simple mixture of Hadean material and ordinary mantle cannot explain all of the observations and that a third component is needed in the source of Fani Maoré volcanics.",
      "locator": {},
      "source_id": "nature-fani-maore-bridgmanite-2026",
      "excerpt_hash": "sha256:0e2e5dd64bae71b9ec83a439bd422c1b1ba8d7f034dabffc8c567f864db0f6b4",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "nature-fani-maore-mixing-evidence",
      "statement": "Nature reports that 8–10% Hadean bridgmanite reproduces Fani Maoré’s mean µ142Nd value, while ε143Nd requires additional source components.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "nature-fani-maore-mixing-excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "claim_id": "fb18d356-66ad-852e-ba7d-f73dd274dc48",
      "direction": "SUPPORT",
      "evidence_item_id": "nature-fani-maore-mixing-evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "FOUND"
}

Rows created

• Source 55ff13ad-9b28-8662-b67e-f749dc4fa04c
• SourceLocation a7c83ccb-c07a-8f0b-ac53-68011ed2d434
• EvidenceItem af29828d-a24f-8b9f-9fb8-2fade826d249
• EvidenceClaimLink 7722050e-dd8f-84e9-a993-965a778dc0cf (accepted seq 24350)

Status history

Audits

None.

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