石英ESR法物源示踪：认识与进展  

Research Advances in ESR Provenance Tracing Methods of Quartz in Sediments

作　　者：魏传义 刘春茹[1] 李长安 尹功明[1] 李文朋 赵举兴 张增杰 张岱 孙习林[2,4] 李亚伟 

机构地区：[1]中国驰震局地质研究所,地震动力学国家重点实验室,北京100029 [2]中国地质大学(武汉),地球科学学院,湖北武汉430074 [3]生物地质与环境地质国家重点实验室,湖北武汉430074 [4]Cluster Geology and Geochemistry,VU University Amsterdam,De Boelelaan 1085,1081 HV Amsterdam,The Netherlands

出　　处：《地球科学进展》2017年第10期1062-1071,共10页Advances in Earth Science

基　　金：中国地震局地质研究所地震动力学国家重点实验室2016年度自主课题“石英ESR法物源示踪在河流沉积物源示踪中的探讨及应用”(编号:LED2016A08);国家自然科学基金项目“江汉盆地宜昌冲积扇物源解析与区域地貌演化”(编号:41671011)资助~~

摘　　要：石英ESR法物源示踪是一种新发展的沉积物源示踪方法。目前,用于沉积物源示踪研究的石英ESR信号心主要有热处理E'心,自然E'心、Al心和Ti心。从研究实例来看,热处理E'心、是物源示踪研究运用最广泛和最成熟的;自然E'心具有很好的应用前景;Al心和Ti心的物源示踪指示意义还处于实验观察和理论探索阶段。从研究对象来看,该方法已成功应用于东亚粉尘主要源区、黄土高原物源时空变化特征、日本群岛风成沉积物源时空变化特征及日本海沉积物源示踪的研究当中。此外,石英ESR法物源示踪在定量或半定量分析河流沉积物源示踪中也表现出了较好的应用前景。随着石英ESR测年技术的不断提高,该方法将在恢复区域性构造运动、地貌演化以及重建区域性的气候演化历史等方面具有独特的优势。The ESR （Electron Spin Resonance） signals of quartz is a newly developed sediment provenance tracing method. In this paper, the various ESR signals in quartz, historical development of quartz ESR signals in sediment provenance tracing, thermal stability characteristics of heat treated E＇ center, the potential use of quartz nature E＇ center and the irradiated A1/Ti center, as well as successful applications in aeolian sediments, river sedi- ments and marine sediments provenance tracing, were briefly reviewed. The most useful ESR centers of quartz include the heat treated E＇ center, the nature E＇ center, the A1 center and the Ti center. According to recent application researches, the heat-treated E＇ center is the most commonly practiced among them while the significance of provenance tracing by A1 and Ti centers are still in experimental and theoretical stage. Moreover, nature signal intensities of quartz E＇ center not only show a significant dependence on lithology both in bedrocks and deposits, but also can reflect the mixture ratio of deposits with different types of sourced bedrocks. As for the study objects, this method has been successfully used in the studies of provenance area of East Asi- an dust, the temporal and spatial changes of Loess Plateau provenance, the provenance change of aeolian sediment over time and space on Japanese Islands, as well as sediment provenance tracing of Japan Sea sediments. In addi- tion, the ESR provenance tracing of quartz has promising application prospect in quantitative and semi-quantitative analysis of fluvial sediment provenance tracing. Along with the development of ESR dating, this method can significandy reflect and reconstruct the relationship among regional tectonic movements, geomorphic evolution, and elimate evolution. In future work, the combination of trace elements provenance tracing and ESR signals provenance tracing in quartz will help improve and promote the development of sediments provenance tracing methods.

关 键 词：石英 电子自旋共振(ESR) 风成沉积物 河流沉积物 物源示踪 

分 类 号：P512.2[天文地球—地质学]