The supra-crust element abundance characteristics of the stratigraphic regions in Anhui Province
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摘要: 地壳元素丰度的计算尚处在探索性研究阶段。笔者根据岩石测量成果,采用岩层厚度和岩石出露面积加权平均,计算安徽省域及3个地层区40种元素或氧化物的表壳丰度值。通过与陆壳丰度值和所在构造区域丰度值对比,本次计算的丰度值波动范围小,富集元素与省内已发现矿种元素大部分一致,较好地反映了安徽省及3个地层区表壳丰度特征,为安徽省地质找矿、环境监测、土地利用等建立了一份地球化学基础性资料。Abstract: The calculation of the continental crust abundance remains at the exploration stage. In this paper, according to the measure?ment of the rocks, the exposed crust element abundance value of the 40 elements or oxides were calculated from weighted averages of the stratigraphic thickness and rock exposure area in Anhui Province and the three stratigraphic regions. A comparison with the abun?dance values of the continental crust and the region calculated shows a very small wave range of the content value as well as the coinci?dence of the enriched elements with the elements of discovered ore minerals, which well reflects the abundance features of the exposed crust in Anhui Province and the three stratigraphic regions. Therefore the results achieved by the authors have established basic geo?chemical data for geological prospecting, environmental monitoring and land use in Anhui Province.
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Key words:
- rock /
- supra-crust /
- element abundance /
- stratigraphic region /
- Anhui Province
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