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希克苏鲁伯撞击事件后大气硫的大规模扰动。

Massive perturbations to atmospheric sulfur in the aftermath of the Chicxulub impact.

机构信息

Department of Earth and Environmental Sciences, Syracuse University, Syracuse, NY 13244.

School of Earth and Environmental Sciences, Centre for Exoplanet Science, University of St Andrews, St Andrews KY16 9AL, United Kingdom.

出版信息

Proc Natl Acad Sci U S A. 2022 Apr 5;119(14):e2119194119. doi: 10.1073/pnas.2119194119. Epub 2022 Mar 21.

DOI:10.1073/pnas.2119194119
PMID:35312339
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9168947/
Abstract

SignificanceSulfur isotopes confirm a key role for atmospheric sulfur gases in climatic cooling, mass extinction, and the demise of dinosaurs and other global biota after the Chicxulub bolide impact at the Cretaceous-Paleogene boundary. The sulfur isotope anomalies are confined to beds containing ejecta and, in the immediately overlying sediments, are temporally unrelated to known episodes of volcanism that also bracket this event, further addressing the controversial role of the Deccan Traps in the extinction.

摘要

意义硫同位素证实了大气硫气体在气候冷却、大规模灭绝以及白垩纪-古近纪边界 Chicxulub 陨石撞击后恐龙和其他全球生物群的灭绝中所起的关键作用。硫同位素异常仅限于含有喷出物的地层，并且在其上覆沉积物中，与已知的火山活动事件没有时间上的关系，这些火山活动事件也限制了这一事件，进一步解决了德干高原在灭绝中的争议作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/6413c7af02d1/pnas.2119194119fig03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/84491c636f2b/pnas.2119194119fig01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/c7fc7e39bab6/pnas.2119194119fig02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/6413c7af02d1/pnas.2119194119fig03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/84491c636f2b/pnas.2119194119fig01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/c7fc7e39bab6/pnas.2119194119fig02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d93/9168947/6413c7af02d1/pnas.2119194119fig03.jpg

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