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 packet directly states that Earth formed exclusively from inner-Solar-System material whose composition did not vary during accretion. weight 1.800000 evidence

Strongest counted contradiction: The study attributes Earth’s volatile inventory to heterogeneous accretion from impactors formed at different heliocentric distances. weight 1.800000 evidence

Suppressed as dependent: The primary study states its inner-Solar-System accretion interpretation.

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 Unresolved to Contradicted.

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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.

• “A multivariate isotope analysis examined the provenance of Earth’s bulk silicate composition across ten nucleosynthetic isotope anomalies.” · 3 claims · 29 September 2026

Evidence for

• The primary study states its inner-Solar-System accretion interpretation.

  From Homogeneous accretion of the Earth in the inner Solar System Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Primary interpretation.

• The packet directly states that Earth formed exclusively from inner-Solar-System material whose composition did not vary during accretion.

  From Homogeneous accretion of the Earth in the inner Solar System Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

• The study attributes Earth’s volatile inventory to heterogeneous accretion from impactors formed at different heliocentric distances.

  From Nitrogen isotope evidence for Earth’s heterogeneous accretion of volatiles Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  This directly conflicts with compositionally consistent accretion by inner-Solar-System material.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
0b284507		78c12cfc

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	993e27b7, 1367047a, 78c12cfc

Summary

Contribution history

seq	event	detail
19953	APPENDED
19954	ACCEPT	AUTOMATIC_AFTER_VALIDATION
19969	LINK_EVIDENCE	by 1efd24fe (accepted)
22240	TASK_RESULT	by 1efd24fe (accepted)
24954	TASK_RESULT	by 1efd24fe (accepted)