Micropaleontological evidence for redox changes in the OAE3 interval of the US Western Interior: Global vs. local processes
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- 作者：Christopher M. Lowerya ; cmlowery@utexas.edu" class="auth_mail" title="E-mail the corresponding author ; R. Mark Leckiea ; Bradley B. Sagemanb
- 关键词：Niobrara ; Oceanic Anoxic Event 3 ; Foraminifera ; Anoxia ; Western Interior Sea ; Late Cretaceous
- 刊名：Cretaceous Research
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：69
- 期：Complete
- 页码：34-48
- 全文大小：2481 K
文摘
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Foraminiferal data suggest the Smoky Hill Chalk was characterized by seafloor anoxia.
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This interval includes a carbon isotope excursion which may be related to OAE3; however, it is relatively well oxygenated.
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Extended “OAE3” black shales in the WIS and elsewhere do not constitute an “event”.
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Likewise, the carbon isotope excursion that may constitute an event is not anoxic in the WIS and elsewhere.
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The term “OAE3” should be rejected, and “Kingsdown Event” or Late Coniacian Event should be used instead.