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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第31卷

期数:

2009年第03期

页码:

312-322

栏目:

环境地学

出版日期:

2009-09-15

文章信息/Info

Title:

Environmental Magnetism and Its Application Progress in Paleoclimatic and Paleoenvironmental Changes

文章编号:

1672-6561(2009)03-0312-11

作者:

符超峰¹; 2;  宋友桂²; 强小科²; 安芷生²

(1.长安大学 西部矿产资源与地质工程教育部重点实验室,陕西 西安 710054; 2.中国科学院地球环境研究所 黄土与第四纪地质国家重点实验室,陕西 西安 710075)

Author(s):

FU Chao-feng¹; 2;  SONG You-gui²;  QIANG Xiao-ke²;  AN Zhi-sheng²

(1.Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Chang'an University, Xi'an, 710054, Shaanxi, China; 2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710075, Shaanxi, China)

关键词:

环境磁学; 磁性特征; 沉积物; 古气候环境

Keywords:

environmental magnetism;  magnetic property;  sediment;  paleoclimate and paleoenvironment

分类号:

P534.63

DOI:

-

文献标志码:

A

摘要:

基于磁性矿物的性质变化能敏感记录现在和地质历史时期的气候环境变化信息,环境磁学方法能鉴别环境演化过程中磁性物质在大气圈、水圈和岩石圈中运移、沉积和转化的过程,系统介绍了沉积物中磁性矿物的特征和鉴别方法以及主要的环境磁学参数和意义,着重回顾了环境磁学在以黄土、湖泊和海洋沉积物为载体的古气候环境研究中的应用及其取得的重要进展,指出了环境磁学在古气候环境研究过程中要加强多磁学参数综合应用,促进地质记录和磁学指标之间的定量研究,有利于理解不同沉积物的磁性矿物特征和环境变化过程的相关关系。同时强调沉积物还原成岩作用过程的环境磁学研究是目前以至今后发展的一个重要方向。

Abstract:

Magnetic properties can act as sensitive recorders of environmental and climatic information, both for the present day and through geological time. Environmental magnetism involves the application of rock and mineral magnetic techniques to situations in which the transport, deposition, or transformation of magnetic grains is influenced by environmental processes in the atmosphere, hydrosphere, and lithosphere. And environmental magnetism is capable of providing important data for studies of global environmental change, climatic processes, and the impact of humans on the environment. Loess, oceanic and lake sediment are study objects which can be applied to understand global and region environmental climate change. This paper sums up the characteristics and identification methods of the magnetic minerals in environmental studies and the main parameters of environmental magnetism, and casts back the main advances made in paleoclimatic and paleoenvironmental changes fields. Magnetism methods have been made important achievements in the paleoenvironmental and paleoclimate researches by measuring loess, lacustrine and marine sediment.The authors point out the comprehensive application of more magnetic parameters should be strengthened in paleoenvironmental studies, and reinforcing of quantitative research between magnetic information and geological record can understand further the relationship between magnetic minerals character of different kinds of sediments and environmental change process. Meanwhile, it is emphasized that environmental magnetism studies of reductive diagenesis process is an important study drection at present and in the future.

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备注/Memo

备注/Memo:

收稿日期:2008-12-26
基金项目: 国家自然科学基金项目(40872114; 40772116; 40599420); 黄土与第四纪地质国家重点实验室开放基金项目(SKLLQG 0806)
作者简介: 符超峰(1969-),男,陕西兴平人,讲师,理学博士,从事第四纪地质与全球变化教学与研究。E-mail:fuchaofeng@126.com

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更新日期/Last Update: 2009-09-20