摘要
利用光学显微镜和带能谱的扫描电子显微镜(SEM)等方法研究了土壤热磁组分的形貌特征、结构、表面性质及矿物组成,并与化学分析相结合,探讨了土壤热磁组分对矿化指示元素的富集作用和机理。研究结果表明,土壤热磁组分以铁锰氧化物为主,是由土壤中非晶质铁锰氧化物转化而来的。通过对土壤、土壤热磁组分、土壤非磁性组分中铁锰氧化物与成矿及其伴生元素的相关关系分析,证实了土壤热磁组分对矿化指示元素的富集作用,为深化土壤热磁组分测量方法的基础理论提供了依据。对比试验结果表明,土壤热磁组分测量较常规土壤测量具有更强的发现由深部矿体引起的微弱矿化信息的能力。
Optical microscope and scanning electron microscopy（SEM） were used to study the morphology features,structure,surficial properties and mineralogical composition of the thermomagnetic components,and chemical analysis was applied to discuss the enrichment and the mechanism of the adsorption of the effective indicator elements.The correlative analysis between Fe-Mn oxides and mineralized indicator elements of soil,soil thermomagnetic components and nonmagnetic components confirms the enrichment of thermomagnetic components,which provides the theoretic basis for soil thermomagnetic survey.Comparative tests indicate that soil thermomagnetic survey is more powerful than conventional soil survey in detecting weak mineral information caused by deep ore deposits.
出处
《物探与化探》
CAS
CSCD
2012年第3期396-402,共7页
Geophysical and Geochemical Exploration
基金
中国地质调查局地质矿产调查评价专项(1212011120209)
关键词
土壤热磁组分
铁锰氧化物
形貌特征
吸附
富集作用
soil thermomagnetic components
Fe-Mn oxides
morphologic features
adsorption
enrichment process
