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AT-1155

Earliest direct evidence of monument building at the archaeological site of Nan Madol (Pohnpei, Micronesia) identified using 230Th/U coral dating and geochemical sourcing of megalithic architectural stone

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AT-1155
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AT-1155
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Recorded research uses

AT-1155

Nan Madol

Why Ancient Inquiry uses this citation here

Primary peer-reviewed study directly dating construction coral from the monumental tomb at Nandauwas to about 1180-1200 CE and sourcing selected architectural stone; it does not date every islet or reconstruct all transport methods.

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Supporting citation for public claim

Nan Madol's monumental complex is securely situated within Pohnpeian history and Saudeleur-era chiefly ceremonial authority.

Answer / theory: The strongest evidence points to Pohnpeian builders connected to Saudeleur-era chiefly authority. Evidence level: Strong Evidence.
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Supporting citation for public claim

Direct dating places major monument building at Nandauwas around 1180–1200 CE and does not support an Ice Age or lost-continent construction chronology.

Answer / theory: Earlier activity on Pohnpei exists, but the monumental visible complex is not strongly dated to the Ice Age or a lost continent period. Evidence level: Weak Evidence for extreme overdating.
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Limiting / critical citation for public claim

The claim that ancestral Pohnpeians could not have built Nan Madol and that it requires a lost advanced civilization is unsupported by the cataloged chronology, sourcing, survey, and political context.

The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
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Limiting / critical citation for public claim

The catalog identifies stone source areas and a wider engineered landscape but does not establish the exact transport routes or methods used for Nan Madol's basalt.

The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
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Earliest direct evidence of monument building at the archaeological site of Nan Madol (Pohnpei, Micronesia) identified using 230Th/U coral dating and geochemical sourcing of megalithic architectural stone

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