δ34S
全球边界层型剖面和点
地质学
二叠纪-三叠纪灭绝事件
生物集群灭绝
层型
古生物学
浅滩化与学校教育
硫黄
地层剖面
构造盆地
海洋学
生物地层学
阶段(地层学)
石英
人口
人口学
流体包裹体
化学
有机化学
社会学
生物扩散
作者
Guijie Zhang,Xiaolin Zhang,Dandan Li,James Farquhar,Shu-zhong Shen,Xiaoyan Chen,Yanan Shen
出处
期刊:Geology
[Geological Society of America]
日期:2015-12-01
卷期号:: G37284.1-G37284.1
被引量:4
摘要
Multiple sulfur isotopes (32S, 33S, 34S, and 36S) measured on pyrites from the Penglaitan section, the Global Stratotype Section and Point (GSSP) for the Guadalupian-Lopingian Series boundary, and from the auxiliary Tieqiao section in South China show a sulfur isotope signal of negative and positive δ34S with negative Δ33S. We suggest that these data indicate mixing of 34S-enriched and 34S-depleted sulfur in the sediments, which may have been driven by shoaling of sulfidic waters. Similar isotopic data of negative δ34S with negative Δ33S were also observed from the EF section in the Delaware Basin of west Texas (USA). The consistency of the minor sulfur isotopic anomalies from both South China and west Texas suggests a causal link between widespread shoaling of sulfidic waters and the end-Guadalupian mass extinction.
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