Climatic-oceanic forcing on the organic accumulation across the shelf during the Early Cambrian (Age 2 through 3) in the mid-upper Yangtze Block, NE Guizhou, South China

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• 作者：Rumana Yeasmin^a ; ^b ; Daizhao Chen^a ; ^{dzh-chen@mail.iggcas.ac.cn} ; Yong Fu^c ; Jianguo Wang^a ; Zenghui Guo^a ; Chuan Guo^a
• 关键词：Early Cambrian ; Organic enrichment ; Primary productivity and redox state ; Oceanic upwelling ; Climatic-oceanic forcing ; Yangtze Block
• 刊名：Journal of Asian Earth Sciences
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：134
• 期：Complete
• 页码：365-386
• 全文大小：7631 K
• 卷排序：134

文摘

Integrated sedimentological and geochemical constraints on organic enrichment in the Early Cambrian, South China. Extraordinary high bioproductivity was fueled by wind-induced upwelling during transgressions under a relatively arid climate. Sulfidic water wedges only localized in the high-productivity zone on the shallow mid-upper slope of open shelf. Nonsulfidic anoxic waters extensive in the deeper open shelf basin or intrashelf basins landwards. Climatic-oceanic co-evolution controlled the high heterogeneities in productivity and redox states.