南海沉积物中的黏土矿物：指示东亚季风演化历史?
- 收稿日期:
1900-01-01
- 修回日期:
1900-01-01
- 刊出日期:
2010-10-10
摘要: 黏土矿物以其示踪洋流变化和揭示物源区同时期气候变化的能力，近年来在南海沉积古环境研究中的地位日益显现。但是，南海黏土矿物能否用于直接指示东亚季风演化历史的研究仍然颇为争议。本研究认为，南海黏土矿物主要受控于物源区供给和洋流搬运作用，黏土矿物本身不具同时期气候条件特征。以南海北部为例，珠江、台湾和吕宋岛这三个主要物源区无论是冰期还是间冰期都提供相同的黏土矿物组合，这些黏土矿物在输入到南海后分别受到不同洋流的搬运。因此，南海晚第四纪黏土矿物组合用于指示东亚季风演化历史的应用是通过洋流的搬运作用来实现的，在不同海区的应用效果不同。
Clay Mineral Assemblages in Sediments of the South China Sea: East Asian Monsoon Evolution Proxies?
- State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092
- Received Date:
1900-01-01
- Rev Recd Date:
1900-01-01
- Publish Date:
2010-10-10
Abstract: Clay minerals can be used to track oceanic current variations and to reveal contemporaneous paleoclimatic changes prevailing in continental source areas, and have played a significant role in sedimentation and paleoenvironment studies of the South China Sea. However, it is quite debatable whether clay minerals in the South China Sea can directly indicate the East Asian monsoon evolution. This study reports that the clay mineral assemblage in the South China Sea is mainly controlled by provenance supply and current transport, and that the clay minerals themselves do not bear the contemporaneous paleoclimatic characteristics. For example, as three major provenances of terrigenous clastics, the Pearl River, Taiwan, and Luzon provide similar the clay mineral assemblages, respectively, regardless of glacial or interglacial stages. Once entering the South China Sea, these clay minerals are transported by different oceanic currents. Therefore, the implication of late Quaternary clay mineral assemblages in the South China Sea for proxies of the East Asian monsoon evolution is realized through the current transport processes with various results in different parts of the South China Sea.
刘志飞. 南海沉积物中的黏土矿物：指示东亚季风演化历史?[J]. 沉积学报, 2010, 28(5): 1012-1019.
| 引用本文: |
刘志飞. 南海沉积物中的黏土矿物：指示东亚季风演化历史?[J]. 沉积学报, 2010, 28(5): 1012-1019.
|
LIU Zhifei. Clay Mineral Assemblages in Sediments of the South China Sea: East Asian Monsoon Evolution Proxies?[J]. Acta Sedimentologica Sinica, 2010, 28(5): 1012-1019.
| Citation: |
LIU Zhifei. Clay Mineral Assemblages in Sediments of the South China Sea: East Asian Monsoon Evolution Proxies?[J]. Acta Sedimentologica Sinica, 2010, 28(5): 1012-1019.
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