摘要
北山地区植被属戈壁荒漠植被类型 ,主要植物群落为红沙。红沙中多数元素特别是成矿元素及其伴生元素的含量和变化系数矿区大于背景区 ;元素含量背景区呈对数正态分布 ,矿区呈偏对数正态或多峰分布。红沙中的元素组合分类背景区为Au ,Cu ,Pb ,Zn ,As,Sb ,Mo ,V ,Mn和Ag,Sn ,Sr,Ba及Ti,Cr ,Co ,Ni;金矿区为Au ,Ag,As,Sb ,Mo ,Mn ,Sr和Cu ,Pb ,Zn ,Sn ,Ba及Co ,Ni,Ti,V ,Cr;铜矿区为Cu ,Pb ,Zn ,Mo ,Au ,Ag,Ba和As ,Sb ,Sn ,Mn及Ti,V ,Cr,Co ,Ni,Sr。矿区红沙中浓集系数较大的元素多数在矿区岩石中的浓集系数亦较大 ,金、铜矿床红沙和岩石中的特征元素分别都有Au ,Ag ,As,Sb ,Mo,(Mn)和Cu ,Pb ,Zn ,(Ba,Ti,V ,Cr)。在金、铜矿床 (体 )上方分别发育有良好的Au和Cu的生物地球化学异常和元素组合及分带。根据红沙的地球化学特征能判断金或铜矿种类型 ,并能对掩埋、隐伏金、铜矿床 (体 )
Beishan is a gubi area. Its flora is mainly redwood. The contents of the most elements especially the ore-forming elements and their various index are higher than background area. The element contents are characterized by logarithm normal distribution pattern in the background area, but by logarithm normal distribution pattern with multi-peak in the ore area. The element assemblage of redwood is Au,Cu,Pb,Zn,As,Sb,Mo,V,Mn and Ag,S n,Sr,Ba as wll as Ti,Cr,Co,Ni in the background area. The element assemblage of redwood in the gold ore areas is Au,Ag,As,Sb,Mo,Mn,Sr and Cu,Pb,Zn,Sn,Ba as well as Co,Ni,Ti,V,Cr. In the copper area the element assemblage is Cu,Pb,Zn,Mo,Au,Ag,Ba and As,Sb,Sn,Mn as well as Ti,V,Cr,Co,Ni,Sr. The elementary concentrative parameter of redwood is high where that of rocks is high in the ore area. The typical elements of redwood and rocks in the gold and copper deposits are Au,Ag,As,Sb,Mo,(Mn) and Cu,Pb,Zn, (Ba,Ti,V, Cr)respectively. The Au and Cu botanical geochemical anomaly and composed zonation are respectively developed over orebodies in gold deposits and copper deposits. According to the botanicl geochemistry of redwood, the gold and copper mineralization can be identified and the concealed ore bodes be predicted.
出处
《地质与勘探》
CAS
CSCD
北大核心
2001年第3期45-49,共5页
Geology and Exploration
基金
国家计委九五科技找矿项目!(JG947190 1)部分成果
