东太平洋柱状沉积物的古气候和古环境记录

叶瑛; 王汝建; 屠霄霞; 杨帅杰; 柳志卿

东太平洋柱状沉积物的古气候和古环境记录

1.
浙江大学, 地球科学系, 浙江, 杭州, 310027
2.
同济大学, 海洋地质开放实验室, 上海, 200092
3.
浙江大学, 地球科学系, 浙江, 杭州, 310027;中国科学院, 广州地球化学研究所, 广东, 广州, 510642

基金项目: 国家重点基础研究发展规划资助项目(G200007850003);国家“十五”大洋资源和环境勘察及研究重大专项资助项目(DY105-1-04-3)

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出版历程
- 收稿日期: 2003-06-30
- 修回日期: 2003-11-20

Paleoclimatic and paleoenvironmental records in the core sediments from the eastern Pacific Ocean

1.
Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China
2.
Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
3.
Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China;Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, (Guangzhou) 510642, China

摘要

摘要: 太平洋深海盆地的远洋沉积物在物质组成和来源上远较大陆边缘简单.由于远离大陆,又有海沟与周边大陆分隔,太平洋深海沉积物中通常不包含由河流水系搬运而来的悬浮物,因此从深海沉积物中提取古气候、古环境信息可以避免诸多地质因素相互叠加和干扰^[1].深海远洋沉积物中的主要组分是风成陆源碎屑(包括火山碎屑)和来自上层海水的生源组分(降落到洋底的生物壳体)以及由海解作用形成的自生矿物^[2],其中陆源碎屑的相对含量、粒度及矿物成分可以反映大气环流的强度及物源区的气候环境^[1],生源组分的组成、相对含量和丰度以及种属含量变化则与表层海水的生产力和溶解作用有关.
- 东太平洋 /
- 沉积间断 /
- 贸易风 /
- 南极底流
- eastern Pacific Ocean /
- hiatus /
- trade wind /
- AABW

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