文章摘要
史春鸿,陈富荣,方明.1∶25万宣城幅(安徽境内)水系沉积物元素地球化学特征及其在侵入岩体判别上的应用[J].矿产勘查,2019,(3):658-666
1∶25万宣城幅(安徽境内)水系沉积物元素地球化学特征及其在侵入岩体判别上的应用
Geochemical characteristics of elements in stream sediment and its application in the identification of intrusive bodies, 1∶250000 Xuan-cheng sheet,Anhui province
投稿时间:2018-12-10  
DOI:
中文关键词: 水系沉积物  元素地球化学特征  侵入岩体  宣城幅
英文关键词: stream sediment, geochemical characteristics of elements, intrusive body, Xuan-cheng sheet.
基金项目:中国地质调查局项目资助(1212011120938,2)。
作者单位
史春鸿 安徽省地质调查院,安徽,合肥 230001
安徽地矿局313地质队,安徽,六安 237010 
陈富荣 安徽省地质调查院,安徽,合肥 230001
安徽地矿局313地质队,安徽,六安 237010 
方明 安徽省地质调查院,安徽,合肥 230001
安徽地矿局313地质队,安徽,六安 237010 
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中文摘要:
      水系沉积物地球化学测量获得的数据在基础地质研究中可发挥重要作用。通过对1∶25万宣城幅(安徽境内)水系沉积物元素地球化学特征进行研究,获得了宣城幅元素平均值、背景值、标准离差、变异系数等地球化学参数以及区域上的富集特征。花岗岩类水系沉积物继承了其母岩富高场强元素贫相容元素的地球化学特征,以此为基础构建了推断花岗岩类侵入体的地球化学模型,利用该模型绘制的地球化学图中的高值区界线与宣城幅内花岗岩类侵入体的地表出露范围十分吻合,从而验证了地球化学推断花岗岩类侵入体模型的可行性,并进一步预测了可能存在花岗岩类侵入体的地区及分布范围。
英文摘要:
      The data obtained from geochemical measurements of sediments can play an important role in basic geological research. By studying the geochemical characteristics of sediment elements in the 1:250000 xuan-cheng Sheet ( Anhui province), geochemical parameters such as mean value, background value, standard deviation, coefficient of variation and regional enrichment were obtained. Based on the geochemical characteristics of the rich high field strength and poor compatible elements of the granitic intrusions, the geochemical inferred model of the intrusive granite is constructed. The boundary of high value area in geochemical map drawn by this model is in good agreement with the surface exposure range of the granite invader in Xuan-cheng sheet, which verifies the feasibility of geochemical inference of the granite invader model. The area and distribution range of granite invader were predicted.
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