海洋岩石圈磁结构及动力学

doi:10.11978/2015026

热带海洋学报 ›› 2016, Vol. 35 ›› Issue (1): 38-47.doi: 10.11978/2015026CSTR: 32234.14.2015026

海洋岩石圈磁结构及动力学

刘青松¹, 刘建兴^{1, 2}, 段宗奇¹

1. 中国科学院地质与地球物理研究所特提斯研究中心, 北京 100029;
2. 中国科学院大学, 北京 100049

收稿日期:2015-02-17 出版日期:2016-01-10 发布日期:2016-02-02
作者简介:刘青松(1972—), 男, 河北省涿州市人, 研究员。Email: qsliu@mail.iggcas.ac.cn; 电话: 010-82998365
基金资助:
海岸带地质调查工程-大陆架科学钻探项目(GZH201100202); 国家海洋局“全球变化与海气相互作用”专项(GASI-GEOGE-03); 国家自然科学基金(41430962、41374073)

Magnetic structure of the oceanic lithosphere and its dynamic implications

LIU Qingsong¹, LIU Jianxing^{1, 2}, DUAN Zongqi¹

1. The Tethys Research Center, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-02-17 Online:2016-01-10 Published:2016-02-02
Contact: LIU Qingsong, E-mail: qsliu@mail.iggcas.ac.cn
Supported by:
Chinese Continental Shelf Deep Drilling Program (GZH201100202); National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-03); National Natural Science Foundation of China (41430962, 41374073)

摘要/Abstract

摘要： 古地磁学在20世纪极大地促进了板块构造理论的诞生和全球大洋钻探计划的发展。对洋壳的磁性研究是这场地学革命的突破点之一。从磁学性质上, 洋壳磁性包括洋壳中所含磁性矿物本身的性质以及这些矿物携带的古地磁信息。从介质性质上, 洋壳包含下部岩石层(包括枕状玄武岩、辉长岩和橄榄岩)和上部沉积物。文章首先总结洋壳的磁性结构, 并对其代表的动力学意义进行深入探讨, 主要包括应用磁异常条带进行年代学、地球深部动力学、大洋洋壳的板块运动学以及热点演化等研究, 详细总结了国内相关研究中南海洋壳的磁性研究进展。最后对研究中遇到的相关难点和关键科学问题进行了回顾与展望。

关键词: 洋壳, 磁异常条带, 古地磁学, 地球动力学, 南海

Abstract: In the last century, paleomagnetism, especially studies on magnetic properties of oceanic crusts, have greatly promoted the development of the plate tectonics theory and the International Ocean Drilling Program. The oceanic crust carries two kinds of magnetic information: magnetic properties of the magnetic assemblage in the oceanic crust, and the paleomagnetic signals carried by these minerals. Generally, the oceanic crust consists of a lower oceanic lithosphere (including pillow basalt, gabbro and peridotite) and overlying marine sediments. This paper summarized the magnetic structure of the oceanic crust, and then discussed relevant dynamic processes including chronological indications of oceanic magnetic anomalies, dynamic processes of the Earth’s interior, kinematics of the oceanic crust, and evolution of hotspots. Then, we systematically summarized major progresses of magnetic studies of the South China Sea. Key scientific topics related to magnetic properties of oceanic crusts in future studies were also discussed.

Key words: oceanic lithosphere, oceanic magnetic anomalies, paleomagnetism, geodynamics, the South China Sea

刘青松, 刘建兴, 段宗奇. 海洋岩石圈磁结构及动力学[J]. 热带海洋学报, 2016, 35(1): 38-47.

LIU Qingsong, LIU Jianxing, DUAN Zongqi. Magnetic structure of the oceanic lithosphere and its dynamic implications[J]. Journal of Tropical Oceanography, 2016, 35(1): 38-47.

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海洋岩石圈磁结构及动力学

Magnetic structure of the oceanic lithosphere and its dynamic implications

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