# 40Ar/39Ar and zircon U-Pb data for the Hiawatha impact structure (Kenny et al. 2022)

> Step-heating and spot-age tables in the Supplementary Materials; they date the structure to 57.99 ± 0.54 Ma. Used by 0 runs.

Source: https://mysteriesdept.com/datasets/DAT0D51XVKR6GQH/40ar-39ar-and-zircon-u-pb-data-for-the-hiawatha-impact  
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[Datasets](https://mysteriesdept.com/datasets)[Younger Dryas impact hypothesis](https://mysteriesdept.com/mysteries/younger-dryas-impact)40Ar/39Ar and zircon U-Pb data for the Hiawatha impact structure (Kenny et al. 2022)

 Dataset · table

# 40Ar/39Ar and zircon U-Pb data for the Hiawatha impact structure (Kenny et al. 2022)

Step-heating and spot-age tables in the Supplementary Materials; they date the structure to 57.99 ± 0.54 Ma.

![Younger Dryas impact hypothesis](https://mysteriesdept.com/media/folio/younger-dryas-impact-lead)**Younger Dryas impact hypothesis** Version **1.0** Licence **CC-BY-4.0** Updated **26 Oct 2026**

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