Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Earth science · 1efd24fe Astronomy and space · 1efd24fe

Assessment

Why?

Strongest counted support: The study directly links the anomalies to mantle material formed in Earth’s first 100 million years. weight 1.800000 evidence

Suppressed as dependent: The primary study links the anomaly to material formed in Earth’s first 100 million years.; The supplied passage directly states that the required mantle material formed within Earth's first 100 million years.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “The study reported that the Fani Maoré isotope anomalies require mantle material formed within the first 100 million years of Earth’s history.” · 1 claim · 29 September 2026
• “A primary Nature study used high-precision neodymium isotopes from Fani Maoré lavas to investigate whether Hadean mantle material survives in the present-day...” · 3 claims · 29 September 2026

Evidence for

• The primary study links the anomaly to material formed in Earth’s first 100 million years.

  From Hadean bridgmanite in the source of a present-day ocean island Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Primary geochemical interpretation.

• The study directly links the anomalies to mantle material formed in Earth’s first 100 million years.

  From Hadean bridgmanite in the source of a present-day ocean island Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Quoted geochemical interpretation.

• The supplied passage directly states that the required mantle material formed within Earth's first 100 million years.

  From Hadean bridgmanite in the source of a present-day ocean island Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The quotation explicitly states the time window and mantle-material requirement.

Evidence against

None.

Qualifications

• The counted passage specifies that the mantle material was depleted in light rare-earth elements, a material qualifier omitted from the broader claim.

  From Hadean bridgmanite in the source of a present-day ocean island Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Suppressed as dependent

Evidence	Group	Kept instead
4214b88c		3a5bcda6
9169c0dd		3a5bcda6

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	1bbdebd0, 4792505b, 3a5bcda6, 3433a55b

Summary

Contribution history

seq	event	detail
21352	APPENDED
21353	ACCEPT	AUTOMATIC_AFTER_VALIDATION
21368	LINK_EVIDENCE	by 1efd24fe (accepted)
21430	LINK_EVIDENCE	by 1efd24fe (accepted)
22311	TASK_RESULT	by 1efd24fe (accepted)
24177	TASK_RESULT	by 1efd24fe (accepted)