首页|琼北玄武岩建造区域岩石—土壤体系化学元素垂向分布规律

琼北玄武岩建造区域岩石—土壤体系化学元素垂向分布规律

扫码查看
原文链接
  • 万方数据
  • 维普
土壤由岩石风化而来,岩石—土壤是一个密切联系的体系,是地球系统科学中与人类关系最为密切的一部分.为调查研究地质建造单元岩石—土壤体系(简称:岩土体系)中的物质组成演化特征,必须选择原地风化的残积物出露区域来完成土壤垂向剖面采样.笔者等以海南岛区域生态地质背景调查项目的资料数据为基础,科学阐述了残积物剖面的确定方法,并依据琼北玄武岩垂向剖面地球化学数据,总结出如下结论:垂向剖面SiO2含量呈现出土壤表层A层和岩石的高,土壤B、C层含量低的"凹"字型特征,与Al2O3含量变化趋势相反("凸"字型),两个代表性组分存在明显的负相关性,其他组分根据其亲和性,与该两种组分协同变化,部分受表层活动影响较大的元素,例如有机质、Ⅰ等微量元素,则不具有该规律,土壤表层(A、B层)与深层(C层)、岩石中差别通常较大.
Vertical distribution patterns of chemical elements in the rock—soil system ofHainan basalt
Soil is the product of rock weathering,and the interplay between rocks and soil is a fundamental aspect of Earth System Science with direct relevance to human activities.To explore the material composition and evolutionary dynamics of the rock—soil system,it is imperative to select in-situ weathered areas for comprehensive soil vertical profile sampling.Drawing upon data from the Hainan Island Regional Ecological Geological Background Survey Project,this article presents a scientifically grounded approach for identifying eluvium profiles.In addition,the paper summarizes the vertical distribution law of chemical elements in the rock—soil system of the basalt formation in northern Hainan.By utilizing the geochemical data from the vertical profiles of Hainan basalt,the following conclusions are drawn:The SiO2 content in the vertical profiles shows a characteristic of high values in the A layer and rock,and low values in the B and C layers,which is opposite to the trend of Al2O3 content.There is an inverse relationship between these two representative components.Other components follow the same trend based on their affinity,while certain trace elements that are significantly influenced by surface activities,such as organic matter and I,do not conform to this pattern.

Earth System Sciencerock—soil systemeluviumsoil vertical profileHainan basalt

付燕刚、蔡永文、马生明、唐世新、林建绥、胡树起、苏磊、高健翁、龚晶晶、杨剑洲、王振亮、段壮、郝泽江、林鲁军、赵克强、李勇

展开 >

中国地质科学院地球物理地球化学勘查研究所,河北廊坊,065000

国家现代地质勘查工程技术研究中心,河北廊坊,065000

中国冶金地质总局第二地质勘查院,福州,350108

地球系统科学 岩土体系 残积物 土壤垂向剖面 琼北玄武岩

科技基础资源调查专项资助项目中国地质调查局地质调查项目国家重点研发计划项目中国地质科学院地球物理地球化学勘查研究所基本科研业务费项目中国地质科学院地球物理地球化学勘查研究所基本科研业务费项目物化探所中央财政科研项目结余资金项目

2022FY101800DD201903052018YFE0208300AS2022J11AS2023D01JY202109

2024

10.16509/j.georeview.2024.05.015

地质论评
中国地质学会

地质论评

CSTPCD北大核心
影响因子：1.842
ISSN：0371-5736
年,卷(期)：2024.70(5)
  • 18