Major Pleistocene stages in a carbon perspective: The South China Sea record and its global comparison
Major Pleistocene stages in a carbon perspective: The South China Sea record and its global comparison
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DOI：
10.1029/2003pa000991
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发表时间：
2004-12
期刊：
影响因子：
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通讯作者：
Pinxian Wang;Jun Tian;Xinrong Cheng;Chuanlian Liu;Jian Xu
中科院分区：
文献类型：
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作者：
Pinxian Wang;Jun Tian;Xinrong Cheng;Chuanlian Liu;Jian Xu
南海1143海洋钻探项目站点的碳同位素序列揭示了一个叠加在冰川旋回上的~ 500 kyr的长期旋回，并存在于所有海洋的长δ13C序列中。第四纪δ13C记录被4个δ13C最大值事件所间断：δ13Cmax-I，开始于50-60 kyr前的海洋同位素阶段（MIS） 3, δ13Cmax-II (MIS 13, 0.47-0.53 Ma), δ13Cmax-III （MIS 27-29, 0.97-1.04 Ma）和δ13Cmax-VI （MIS 53-57, 1.55-1.65 Ma）。由于在碳酸盐岩曲线中也发现了相同的旋回性，因此δ13Cmax事件表明全球海洋碳储层发生了重大重组。它们还与冰川旋回的重大变化有关，如δ13Cmax-II之后的中布伦什事件和δ13Cmax-III之后的中更新世革命，而这些变化又与冰盖的扩张有关。因此，从碳的角度来看，第四纪经历了三个主要阶段，每个阶段似乎都代表了冰帽发展的一个新的阶段。
[1] Carbon isotope sequences at Ocean Drilling Program Site 1143, South China Sea, reveal a long-term cyclicity of ∼500 kyr that is superimposed on the glacial cycles and is present in long δ13C sequences from all oceans. The Quaternary δ13C record is punctuated by four δ13C maximum events: δ13Cmax-I, which began in marine isotope stage (MIS) 3 around 50–60 kyr ago, δ13Cmax-II (MIS 13, 0.47–0.53 Ma), δ13Cmax-III (MIS 27–29, 0.97–1.04 Ma) and δ13Cmax-VI (MIS 53–57, 1.55–1.65 Ma). As the same cyclicity is also found in carbonate curves, the δ13Cmax events must denote major reorganization in the carbon reservoir of the global ocean. They also are associated with major changes in glacial cyclicity, such as the Mid-Brunhes Event following δ13Cmax-II and the Mid-Pleistocene Revolution following δ13Cmax-III, which in turn were associated with expansion of the ice sheets. From a carbon perspective, therefore, the Quaternary period has passed through three major stages, and each appears to represent a further step in ice cap development.