AT-0176
Younger Dryas Impact Hypothesis
Why Ancient Inquiry uses this citation here
independent replication test.
What this usage does not establish
Bibliographic verification does not by itself establish that the full text was read.
Open topicAT-0176
Surovell, Todd A., et al. (2009). “An independent evaluation…” _PNAS_ 106(43): 18155–18158. DOI: https://doi.org/10.1073/pnas.0907857106. Role: independent replication test.
DOI · Academic research
Source record
This is one canonical bibliographic record with topic-scoped research-use entries. It does not reproduce the paper, book, text, dataset, image, or manuscript and does not imply that full text was reviewed.
Alternate accepted citation records
- An independent evaluation of the Younger Dryas extraterrestrial impact hypothesis
Recorded research uses
AT-0329
Clovis Comet Claim
Why Ancient Inquiry uses this citation here
Independent peer-reviewed test that did not reproduce key early magnetic-particle and microspherule results
What this usage does not establish
Bibliographic verification does not by itself establish that the full text was read.
Open topicTopics citing it and claims using it
Topic citing this source
Younger Dryas Impact Hypothesis
Open topicTopic citing this source
Clovis Comet Claim
Open topicSupporting citation for public claim
Proponents and critics continue to dispute marker identity, chronology, replication, and impact physics.
Proponents and critics continue to dispute marker identity, chronology, replication, and impact physics.
Open claim topicLimiting / critical citation for public claim
A Younger Dryas extraterrestrial impact or airburst remains a minority hypothesis: proponent papers report candidate markers, while major critical reviews find the proposed impact-to-climate, extinction, and cultural-disruption chain unestablished.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
Firestone et al. proposed a 12.9 ka extraterrestrial event contributing to Younger Dryas cooling and megafaunal extinctions; independent testing and the 2023 review do not establish that it ended Clovis or caused the combined outcomes.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
The listed archaeological chronology and critical review do not support a simple comet-caused wipeout of Clovis-associated populations.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
A comet-caused Younger Dryas is the broader Younger Dryas Impact Hypothesis advanced by the 2007 origin paper and rejected by the listed 2023 critical synthesis.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
The 2023 critical review concludes that YDIH should be rejected; a July 2026 version-1 report shows that pro-YDIH proxy claims continue but was awaiting peer review at the audit cutoff.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
An ice-sheet impact or airburst is a hypothesis used to explain the absence of a conventional crater; it remains unconfirmed in the listed evidence.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
Without a confirmed crater or airburst field, the 12.9 ka event hypothesis depends on proxy identification, secure dating, and independent replication.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicLimiting / critical citation for public claim
A comet-caused terminal-Pleistocene megafaunal extinction is not demonstrated by the listed evidence.
The evidence does not automatically support broader causal, technological, transmission, or literalizing claims beyond the cited record.
Open claim topicAccess and actions
Surovell, Todd A., et al. (2009). “An independent evaluation…” _PNAS_ 106(43): 18155–18158. DOI: https://doi.org/10.1073/pnas.0907857106. Role: independent replication test.