Geopolymer and alien theories rejected by archaeological evidence. Acid theory proposed red clay dissolved stone faces but contradicts colonial accounts of dry-fit masonry 2021 petrographic study of Qorikancha stones confirmed they are biotite andesites from Rumicolca Formation Polygonal blocks uniquely shaped, would require individual molds making technique impractical
Claims that Qorikancha's stones came from the Rumicolca Formation and a 2021 petrographic study on Inca masonry techniques cannot be verified from available sources. General archaeological consensus does support that alien theories lack evidence, and dry-fit masonry techniques are documented in some colonial sources. However, the specific claims about Rumicolca Formation sourcing and the 2021 study require citation verification.
Key Facts
- Acid theory proposed red clay dissolved stone faces but contradicts colonial accounts of dry-fit masonry
- 2021 petrographic study of Qorikancha stones confirmed they are biotite andesites from Rumicolca Formation
- Polygonal blocks uniquely shaped, would require individual molds making technique impractical
- Adobe bricks vary in size with rounded edges proving Inca didn't use molds
- Alien theories unfalsifiable with no evidence, Inca masonry dates consistently to Inca period
- Colonial construction reused Inca ashlar blocks, demonstrating continuity of masonry techniques
Related site: Qorikancha — view location, images, and history on the Ancient Nerds map.
Source: The Secrets of Inca Masonry by Ancient Americas