Abstract The basal Datangpo Formation in South China deposited in the Cryogenian interglacial period has gained increasing interest with the well development of organic-rich black shale and its hosted manganese (Mn) deposits (Mn carbonate), which contain important clues to the paleoclimate and ocean redox of this critical interval in Earth's history. The depositional environment of Mn deposits is still uncertain, as suggested by different suites of redox-indicating parameters. In addition, the Mn deposits are notable for their enrichment in organic matter (OM), despite the fact that the diagenetic origin for the Mn deposits would result in large consumption of OM. To gain insight into these issues, we present the geochemical and molybdenum (Mo) isotopic data of black shale and Mn carbonate samples from a new section. The Datangpo Mn carbonates are characterized by low Mo content (mostly

中文翻译：

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大塘坡组基底地球化学和钼同位素：对低温间冰期海洋氧化还原条件和有机质积累的影响

摘要 随着富含有机质黑色页岩及其赋存的锰 (Mn) 矿床 (Mn碳酸盐) 的发育, 低温间冰期沉积的华南基底大塘坡组越来越受到人们的关注, 其中包含古气候和海洋的重要线索。地球历史上这个关键间隔的氧化还原。正如不同的氧化还原指示参数所表明的那样，锰矿床的沉积环境仍然不确定。此外，尽管锰矿床的成岩成因会导致有机质的大量消耗，但锰矿床以富含有机质（OM）而著称。为了深入了解这些问题，我们提供了来自新剖面的黑色页岩和 Mn 碳酸盐样品的地球化学和钼 (Mo) 同位素数据。