舒雨婷,刘志杰,余佳,孔敏,田先德,刘升发.海洋沉积物黏土矿物相对含量不同计算方法对比研究[J].海洋通报,2019,(5):585-590
海洋沉积物黏土矿物相对含量不同计算方法对比研究
Comparative study on different calculation methods of clay mineral contents of marine sediment
投稿时间:2018-12-18  修订日期:2018-03-02
DOI:10.11840/j.issn.1001-6392.2019.05.013
中文关键词:  海洋沉积物  东印度洋  黏土矿物  相对含量  计算方法
英文关键词:Marine sediment  Eastern Indian Ocean  clay minerals  relative contents  calculation method
基金项目:全球变化与海气相互作用专项(GASI-01-01-09-04)
作者单位E-mail
舒雨婷 国家海洋信息中心天津300171 307640163@qq.com 
刘志杰 国家海洋信息中心天津300171 kittylzj@163.com 
余佳 国家海洋信息中心天津300171  
孔敏 国家海洋信息中心天津300171  
田先德 国家海洋信息中心天津300171  
刘升发 自然资源部第一海洋研究所山东 青岛266061  
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中文摘要:
      海洋沉积物黏土矿物相对含量计算存在多种计算方法,并不统一,限制了异源黏土矿物的整合和使用。文章选取了两种较为常见的计算方法,即Biscaye 和国标中规定的计算方法,分别对东印度洋109 个表层样品黏土矿物的相对百分含量进行计算,分析对比了两种方法计算结果之间的差异。结果显示,两种计算方法结果存在显著正相关,都能显示黏土矿物分布的变化趋势,4 种黏土矿物相关系数由高到底分别为:蒙皂石0.986、伊利石0.974、绿泥石0.924、高岭石0.923。相对于Biscaye 计算方法,国标计算方法会增加伊利石和高岭石的相对百分含量而降低蒙皂石和绿泥石的相对百分含量。两种计算方法黏土矿物的含量相关性较好,可以建立起相互数学转换关系式。但在不同的海区,由于矿物成因、结晶程度以及混层矿物的出现可能会使衍射峰形态发生改变,从而相关性系数和转换关系也会相应发生改变。
英文摘要:
      Abstract:There are various methodscalculating the relative content of clay minerals in marine sediments, which are not uniform and limit the integration and use of heterologousclay minerals. By adopting two common calculation methods,specified in Biscaye and the Chinese National Standard (GB), this paper respectively calculates the relative percentage of clay minerals in 109 surface samples in the eastern Indian Ocean, and also analyzes the differences between the two methods. The results show that there is a significant positive correlation between the two calculation methods. All methods can show the variation trend of clay mineral distribution. The correlation coefficients of the four clay minerals are:smectite 0.986, illite 0.974,chlorite 0.924 and kaolinite 0.923, respectively. Relative to the method of Biscaye, the method of GB increases the relative percentage of illite and kaolinite while decreases the relative percentage of smectite and chlorite. Both of the methods have a good correlation of clay minerals relative content, and can establish mutual mathematical conversion relationships. However, in different sea areas, the diffraction peak morphology may change due to the mineral genesis, crystallization degree and the appearance of mixed minerals, besides, the correlation coefficient and conversion relationship may also change accordingly.
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