新疆昆仑山布喀达坂峰—依吞布拉克一带岩石地球化学特征及元素分布规律  

REGIONAL DISTRIBUTION PATTERNS OF GEOCHEMICAL DATA IN THE YI-TUN-BU-LA-KE AREA–BE-GE-DA-BAN MOUNTAIN PEAK,EAST XINJIANG KUNLUN MOUNTAINS

作　　者：潘维良[1] 刘春涌 王小兵[1] 景宝盛[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局物化探大队,新疆昌吉831100 [2]新疆维吾尔自治区地质矿产研究所,新疆乌鲁木齐830000

出　　处：《新疆地质》2005年第4期347-350,共4页Xinjiang Geology

基　　金：国土资源大调查项目(200214200007)资助

摘　　要：新疆昆仑山东段布喀达坂峰—依吞布拉克一带区域岩石地球化学特征表明:长城系富集W、Pb;奥陶系富集Au;二叠系富集Cu、Zn、Hg、Sb;三叠系富集Zn、Pb、Ag;三叠纪石英斑岩富集Cu、Zn、Hg、Sb.元素区域分布规律表明:与全国高寒山区平均水平相比,工作区相对富集Ba、Hg、Pb、Sn、Mo元素,贫化铁族元素;工作区可分为北、中、南3个地球化学带.北带形成了富集Au、Ag、Sb、Hg、Cu、Zn、Pb、Mo、Mg及铁族元素,贫化Cr、Co、Ni、Li、Be、Bi元素地球化学带;中带富集Cu、Pb、Zn、Ag、W、Sn、Mo、U、Th,贫化Hg、Li及铁族元素,形成了有色、稀有稀土、放射性元素地球化学带;南带富集Au、As、Sb、Hg、Cu、Zn,形成了贵重、有色元素地球化学带.石英斑岩富集Cu、Zn、Hg、Sb元素.祁漫塔格带元素组合与斑岩型铜钼矿、层控型Pb、Zn矿和夕卡岩型铁多金属矿床元素组合相似.第四系元素含量均一,不存在元素大面积区域性富集与贫化的物理化学条件.In the Yi-tun-bu-la-ke Area to Be-ge-da-ban mountain peak region in the eastern part of the Xinjiang Kunlun Mountains, geochemical associations indicate： enrichment of W and Pb during the Chang-cheng period; enrichment of Au during the Ordovician period; enrichment of Cu,Zn,Hg,Sb during the Permian period; enrichment of Zn,Pb,Ag during the Triassic period and; enrichment of Cu, Zn, Hg, Sb associated with quartz porphyry during the Triassic period. The regional distribution pattern of elements shows enrichment of BHgpbSnMo and depletion in the Fe family elements in areas of the high elevation and cold climate compared to other part of areas in China. The study areas are divided into three geochemical zones - north zone, middle zone and south zone; the north zone is enriched in Au,Ag,Sb,Hg,Cu,Zn,Pb,Mo, Mg and the Fe family, but is poor in the dements of Cr, Co, Ni, Li. Be, Bi; the middle zone is enriched in Cu, Pb, Zn, Ag, W, Sn, Mo, U, Th, but are poor in Hg, Li and the Fe family to form into a geochemical zone of non-ferrous, rare earth, and radioactivity elements; and the south zone is enriched in Au, As, Sb, Hg, Cu, Zn and the geochemical zone of precious and non-ferrous elements was formed. The quartz porphyrys are enriched in Cu,Zn,Hg,Sb. The elements in Quaternary system are very even and there are no geochemical conditions for regional enrichment.

关 键 词：新疆 布喀达坂峰-依吞布拉克 岩石地球化学 元素区域分布规律 

分 类 号：P596[天文地球—地球化学]