中文摘要：

中间的 Ediacaran Shuram 旅行，陆地历史上的最大的否定 13Ccarb 旅行，为深海洋文档(溶解的器官的碳) 的阵发性的氧化和矿化作用作为间接证据被解释了。缺氧的文档沉重的深水什么时候在海洋的 upwelling 期间被带到浅架，被假设了如此的氧化事件可能发生了，它被期望在浅环境引起局部性的血缺氧。测试这预言，我们系统地在华南的 Yangtze 峡区域分析了稀土元素元素(REE ) 和上面的 Doushantuo 形成碳酸盐的 13Ccarb，它在内部架环境和记录被扔一次大否定 13Ccarb 旅行相关到 Shuram 事件。REE 数据表演在 Ce/Ce 的重要积极移动 * 价值，与显著否定 13Ccarb 移动同步。这积极 Ce/Ce * 移动被解释在浅架环境代表一个海洋的血缺氧事件，它可能被 upwelling 或冲击引起了弄空氧并且 12C-enriched 深流水到架上。这个血缺氧事件在 Ediacaran acanthomorphic acritarchs 的丰富和差异与锋利的衰落与一致，提起这二个地理生物学的事件可能是有原因地相关的可能性。

英文摘要：

The middle Ediacaran Shuram excursion, the largest negative δ ^13 C carb excursion in Earth history, has been interpreted as indirect evidence for episodic oxidation and remineralization of deep ocean DOC （dissolved organic carbon）. It has been hypothesized that such oxidation event may have occurred when anoxic DOC-laden deep water was brought to shallow shelves during oceanic upwelling, which is expected to cause localized anoxia in shallow environments. To test this prediction, we systematically analyzed rare earth elements （REE） and δ ^13 C carb of the upper Doushantuo Formation carbonates in the Yangtze Gorges area of South China, which were deposited in an inner shelf environment and record a large negative δ^ 13 C carb excursion correlated to the Shuram event. The REE data show a significant positive shift in Ce/Ce^＊ values, synchronous with a pronounced negative δ ^13 C carb shift. This positive Ce/Ce^＊ shift is interpreted to represent an oceanic anoxia event in shallow shelf environments, which may have been caused by the upwelling or impingement of oxygen-depleted and 12 C-enriched deep water onto shelves. This anoxia event coincides with a sharp decline in the abundance and diversity of Ediacaran acanthomorphic acritarchs, raising the possibility that these two geobiological events may be causally related.