# Kennett 2025: Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex (retracted) > James P. Kennett, Malcolm A. LeCompte, Christopher R. Moore et al., 2025. 5 records on Mysteries Department cite it. The second retracted paper; the… Source: https://mysteriesdept.com/sources/SRC0D51WW3Y6T4M/shocked-quartz-at-the-younger-dryas-onset-12-8-ka-supports Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) --- [Sources](https://mysteriesdept.com/sources)[Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact)Kennett 2025 **0** # Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex (retracted) James P. Kennett, Malcolm A. LeCompte, Christopher R. Moore et al., 2025. _PLOS One 20(9), e0319840_. Reported shock-fractured quartz and other proxies in sediments at Murray Springs (Arizona), Blackwater Draw (New Mexico) and Arlington Canyon (California) at the inferred boundary. Published 10 September 2025; retracted 11 February 2026. **Younger Dryas impact hypothesis** ArticleCopy of **[Quartz grains reported as shock-fractured (2025, retracted)](https://mysteriesdept.com/mysteries/younger-dryas-impact/artifacts/ART0D51XZ8Y2R89/quartz-grains-reported-as-shock-fractured-2025-retracted)** doi: **[10.1371/journal.pone.0319840](https://doi.org/10.1371/journal.pone.0319840)** Checked against the original0 ## What it's used for here The second retracted paper; the claims and what they rested on. ## The document 41 pages [Pages][Text]Page 1 of 41 [![Page 1](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p1)1][![Page 2](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p2)2][![Page 3](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p3)3][![Page 4](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p4)4][![Page 5](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p5)5][![Page 6](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p6)6][![Page 7](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p7)7][![Page 8](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p8)8][![Page 9](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p9)9][![Page 10](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p10)10][![Page 11](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p11)11][![Page 12](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p12)12] ![Page 1 of Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex (retracted)](https://mysteriesdept.com/files/v/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9/p1) The first 12 pages are shown; the rest are in the file. Text taken from the file. Check it against the page. ## Cited by on this site 5 records [Quartz grains reported as shock-fractured (2025, retracted)](https://mysteriesdept.com/mysteries/younger-dryas-impact/artifacts/ART0D51XZ8Y2R89/quartz-grains-reported-as-shock-fractured-2025-retracted) ART [The "black mat" at Murray Springs](https://mysteriesdept.com/mysteries/younger-dryas-impact/artifacts/ART0D51XYSA1G8Y/the-black-mat-at-murray-springs) ART [Quartz grains reported as shock-fractured (2025, retracted): document](https://mysteriesdept.com/mysteries/younger-dryas-impact/copies/CPY0D51XZGR030E/quartz-grains-reported-as-shock-fractured-2025-retracted) CPY [PLOS One publishes the shocked-quartz paper](https://mysteriesdept.com/mysteries/younger-dryas-impact/events/EVT0D51X7K41575/plos-one-publishes-the-shocked-quartz-paper) EVT [The Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact) The mystery article MYS ## Cite it ``` Kennett, J. P., LeCompte, M. A., Moore, C. R., Kletetschka, G., Johnson, J. R., Wolbach, W. S., & and others (2025). Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex (retracted). PLOS One 20(9), e0319840. https://doi.org/10.1371/journal.pone.0319840 ``` [Read it free at doi.org](https://doi.org/10.1371/journal.pone.0319840)[Download PDF · 9.7 MB](https://mysteriesdept.com/files/d/0ec76d1cf1923f01b76d4a8a01b58eba74dbd76323971ece536dd4a9bae058e9) Anyone can read it here; members can download it. Key **SRC** 0D51WW3Y6T4M Kind Journal article Rights CC-BY-4.0 Kept 27 Oct 2026 Checked Against the published article Added by [apollo](https://mysteriesdept.com/u/apollo) The record Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS. 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