Sedimentary responses to sea-level rise and Kuroshio Current intrusion since the Last Glacial Maximum: Grain size and clay mineral evidence from the northern South China Sea slope
Sedimentary responses to sea-level rise and Kuroshio Current intrusion since the Last Glacial Maximum: Grain size and clay mineral evidence from the northern South China Sea slope
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末次盛冰期以来海平面上升和黑潮入侵的沉积响应：南海北部斜坡的颗粒大小和粘土矿物证据
DOI：
10.1016/j.palaeo.2016.03.002
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发表时间：
2016-05
影响因子：
3
通讯作者：
Zhou, Liping
中科院分区：
文献类型：
--
作者：
Xiang, Rong;Kao, S. -J.;Fu, Shaoying;Zhou, Liping
为了更好地了解该地区自末次冰盛期以来的沉积历史，我们分析了南海区中国海北部陆源岩芯的陆源成分。颗粒大小和粘土矿物组成的时间变化揭示了一套复杂的重叠控制。整个岩芯大约90%的陆源沉积物的大小在5.5-8.5Φ之间，其中5.25-6.25Φ的大小对环境变化特别敏感。这一比例在去冰期期间下降，表明由于海岸线的后退，较粗颗粒的供应减少了。随着海平面上升到现在的位置，台湾粘土的相对比例增加，但台湾粘土的质量积累速率下降，表明向西的底流强度减弱。相比之下，珠江粘土的相对贡献率从末次盛冰期的约40%下降到海平面低于目前位置约700m时的约5%。珠江的贡献在整个全新世期间一直保持在较低的水平，这表明陆架上的岸上平行环流模式与现在的形态相似1300ka。与台湾和珠江相比，珠江以东地区(EPR)的粘土比例相对较小，变化也较小。该地区相对贡献的局部峰值出现在一次熔融水脉冲事件(MWP-1A)期间，表明沿海海湾富蒙脱石粘土的储集层被这次海侵重新抬升。对三种主要粘土来源相对贡献的光谱分析表明，存在着约380亿年的显著周期，这可能反映了太阳辐射的变化，它调制了台湾和珠江粘土矿物在百年尺度上流向沉积点的通量。
We analyzed the terrigenous fraction of a sediment core from the northern slope of the South China Sea, to better understand the depositional history of the region since the Last Glacial Maximum (LGM). Temporal variations in the grain size and clay mineral composition revealed a complex set of overlapping controls. Approximately 90% of terrigenous sediment throughout the core ranged in size from 5.5 to 8.5 Φ, with the 5.25–6.25 Φ size class being particularly sensitive to environmental changes. The proportion of this fraction decreased during deglacial, indicating a reduction in the supply of coarser grains due to coastline retreat. As the sea level rose toward its present position, the relative proportion of clay derived from Taiwan increased; however, the mass accumulation rate of Taiwan-derived clay decreased, suggesting a reduction in the westward bottom current intensity. In contrast, the relative contribution of clay from the Pearl River decreased from ~ 40% during the LGM, to ~ 5% when the sea level reached ~ 70 m below its present position. The Pearl River contribution has remained consistently low throughout the Holocene, indicating that shore-parallel circulation patterns on the shelf resembled their present configuration by 13 ka. Compared to Taiwan and the Pearl River, the proportion of clay derived from the area east of Pearl River (EPR) was relatively minor, and less variable. A local peak in the relative contribution from this area occurred during a Melt Water Pulse Event (MWP-1A), suggesting that a reservoir of smectite-rich clays residing in coastal bays was remobilized by this marine transgression. Spectral analysis of the relative contributions of the three major clay sources revealed a significant periodicity of ~ 380 years, which may reflect changes in solar insolation modulating the flux of clay minerals from Taiwan and the Pearl River to the deposition site on a centennial scale.
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DOI：
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发表时间：
2006-07
期刊：
--
影响因子：
--
作者：
C. Bühring
通讯作者：
C. Bühring
南海北部边缘的地层间隙反映了冰川终止处太平洋深水流入的变化
DOI：
10.1007/s11430-013-4678-2
发表时间：
2013-08
期刊：
Science China Earth Sciences
影响因子：
--
作者：
Sarnthein, M., Sadatzki, H., Jian, Z.;Sarnthein, M., Sadatzki, H., Jian, Z.
通讯作者：
Sarnthein, M., Sadatzki, H., Jian, Z.
黑潮入侵对南海北部沉积环境的影响：来自表层沉积记录的证据
影响因子：
2.9
作者：
Liu, Jianguo;Xiang, Rong;Chen, Muhong;Chen, Zhong;Yan, Wen;Liu, Fang
通讯作者：
Liu, Fang
根据 Argos 漂流浮标和卫星高度计数据得出的黑潮及邻近水域表面速度的变化
影响因子：
--
作者：
Ma Chao;Wu Dexing;Lin Xiaopei
通讯作者：
Lin Xiaopei
南海北部沉积岩芯生物标记记录末次盛冰期以来的气候和植被变化
影响因子：
2.3
作者：
Lu, Yuehan;Wei, Ganjian;Li, Li;Wang, Hui
通讯作者：
Wang, Hui