@callanbentley Trying to link to the following 2019 paper, but Springer doesn’t play nice. “Enhanced flux of extraterrestrial 3He across the Permian–Triassic boundary” I have questions about the particular conclusion, but cherts should concentrate meteor
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@callanbentley Not sure if there is a way to look through the diagenesis to get a good record of primary dust/plankton sedimentation rate. Titanium is relatively insoluble, but what do you ratio it to? An aside, but should be a lot of IDP at this sediment
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A new research article : Published 13 February 2019 Enhanced flux of extraterrestrial 3He across the Permian–Triassic boundary Tetsuji Onoue et al. https://t.co/b8Ca8e3Lpe #Permian #Triassic #Bedded_chert https://t.co/UrXWeLjlEO