Cast, Not Carved · claim GEO-C592 · Observation rung · Methodological critiques
Persistent large-scale carbonate efflorescence on a stone wall indicates continuing alkali migration from within the substrate — normal for cementitious composites undergoing slow carbonation, atypical of natural igneous rock, which is a closed silicate system.
source anchor
geo catalog T-092 (cross-source, neutrally framed); efflorescence behavior in cement-science literature (Longhi et al. 2022; Zhang et al. 2014, 2018; Shi et al. 2006)
independence group: cusco-surface-chemistry — related extractions in this group are not independent evidence
Evidence
No evidence records attached yet — this claim is held on its source anchor alone: the ledger knows where the proposition is stated and has admitted no observation behind it. A source is not evidence.
an honest empty state
This claim is in the ledger but not in the current edition's featured set. Nothing here has been assessed — that absence is information, not an oversight.
Still missing: plain-language gloss, credibility assessment, diagnosticity assessment, strongest objection, what would change our mind. A claim gains them when an edition features it and the edition's adopted assessment supplies the full treatment — a decision the panel reviews, not a field anyone flips.