雷达图在地球科学研究中的应用及其意义

发布时间：2018-02-24 03:10

本文关键词： 雷达图地球科学多元统计地球化学判别图　出处：《科学通报》2017年01期 　论文类型：期刊论文

【摘要】：雷达图(radar chart)是多元统计图表常用的方法,它将评价对象的指标状况投影到二维平面上,因与导航雷达显示屏上的图像十分相似而得名.雷达图已广泛应用于公司业绩、财务报表、人力资源以及风险评估等方面,但在地球科学领域内应用较少,而在岩石学、地球化学、矿床学、构造学、地球物理学等方面几乎是空白.本文尝试探讨了将雷达图应用于玄武岩构造环境判别、蛇绿岩识别、A型花岗岩鉴别、含矿岩体和不含矿岩体的识别、成矿物源区示踪、碎屑沉积岩构造环境判别、热水沉积识别、河流黏土矿物对物源区的示踪、南黄海沉积物微量元素对比以及页岩不同矿物组合对比等方面,取得了初步的效果.研究表明,雷达图在地球科学领域的用途范围广泛,它所表达的方式比较符合地球科学的学科特点.它不仅可以表示地球化学数据,也可以表示其他岩石学、矿物学、构造学等方面的要素;而且要素可以是不同的,可依需要而定;每个轴的计量可以灵活选用,既可以是定性的,也可以是有连续的数据的.当然,雷达图也不是万能的,有一定的局限性.它只是一个方法,目的是方便观察,解决问题.
[Abstract]:Radar chart is a common method for multivariate statistical charts. It projects the index status of the object to a two-dimensional plane, which is named after the image on the navigation radar display screen. Radar chart has been widely used in the performance of the company. Financial statements, human resources, risk assessment, etc., but less applied in the field of geoscience, but in petrology, geochemistry, mineralogy, tectonics, etc. Geophysics is almost blank. This paper attempts to discuss the application of radar map to the identification of basalt tectonic environment, ophiolite to identify A-type granite, the identification of ore-bearing and non-ore-bearing rock mass, and the trace of mineralized source area, and the application of radar map to the identification of basalt tectonic environment, ophiolite and ophiolite granites. Preliminary results have been obtained in structural environment discrimination of clastic sedimentary rocks, identification of hydrothermal deposits, tracing of fluvial clay minerals to source areas, trace elements in sediments of South Huang Hai and correlation of different mineral assemblages of shale. Radar maps have a wide range of applications in the field of earth sciences, and they are expressed in a way that is more consistent with the characteristics of Earth sciences. It can represent not only geochemical data, but also other petrology and mineralogy. Elements in such areas as tectonics; and elements can be different and can be determined as needed; measurements of each axis can be flexibly selected, either qualitative or continuous, and radar maps are not omnipotent, of course. There are certain limitations. It is only a method, the purpose is to facilitate observation, solve problems.
【作者单位】：中国科学院地质与地球物理研究所;西北大学地质学系大陆动力学国家重点实验室;
【基金】：中国科学院地质与地球物理研究所岩石圈演化国家重点实验室项目(81300001) 西北大学大陆动力学国家重点实验室自主研究课题资助
【分类号】：P624

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