Soil Geochemical Characteristics and Their Indicative Significance in Map Sheets of Siziwang Banner and Dongbahao Township of Inner Mongolia
The 1∶50,000 soil geochemical survey was carried out in the map of Siziwang Banner and the map of Dongbahao of In-ner Mongolia,and the content,distribution and combination characteristics of 18 elements in the area were analyzed,15 comprehen-sive anomalies were identified,and the surface reconnaissance,probing and sampling analysis and verification work were carried out in some abnormal areas.The results showed that the concentration ratio of As,Pb,Sb,Rb,Li,La and Ag in the area are greater than 1.2,showing the relative enrichment characteristics,and the variation coefficient Cv of As,Au,Pb,Ag,Cd,Sb,Mo,Bi,Zn,Cu and Li are greater than 1,showing the characteristics of easy activation and migration and high mineralization possibility.According to the correlation,the elements in the region can be divided into four clusters:As-Pb-Cd-Ag,Cu-Zn-Sn-Y,Mo-W-Sb-Bi-U-Li and Th-La-Rb-Au.Among them,As-Pb-Cd-Ag and Cu-Zn-Sn-Y groups have good correlation and may crystallize simultaneously at the end of magma crystallization or in a concomitant form.The results of surface exploration,troughs and sampling analysis in some abnor-mal areas show that the quartz veins and alteration development in the abnormal areas are in good agreement with the geochemical anomalies,the ore-forming elements are of high taste and the ore points are developed,and the ore-indicating significance is obvi-ous,which provides an effective reference for the delineation of prospecting targets in the area.
map sheet of Siziwang Bannermap sheet of Dongbahao townshipsoil geochemistryconcentration ratiocoefficient of variationanomaly delineation
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