重庆东北城口地区黑色岩系地球化学异常模式  

A Geochemical Anomaly Model for Black Shales in Chengkou Region of Northeast Chongqing

作　　者：雷恩[1,2] 王丹[1,2] 杨洪永[1,2] 秦林[1,2] 

机构地区：[1]重庆地质矿产研究院外生成矿与矿山环境重庆市重点实验室,重庆400042 [2]煤炭资源与安全开采国家重点实验室重庆研究中心,重庆400042

出　　处：《地质科技情报》2012年第2期35-39,共5页Geological Science and Technology Information

基　　金：重庆市市级地质矿产专项([2006]601)

摘　　要：重庆东北城口地区黑色岩系广泛发育,主要岩性有上震旦统到下武寒统的黑色碳质粉砂岩、含碳粉砂质板岩、含碳硅质岩等,在区内进行水系沉积物测量工作取得了良好的找矿效果。以区内的黑色岩系为重点研究对象,通过对样品分析数据的综合研究,指出了区内的主要成矿元素有Mn、V、Ag、Ba等,其中Mn主要富集在灯影组和陡山沱组中,V、Ag主要富集在鲁家坪组中,Ba则富集在巴山组中,初步确定了黑色岩系的地球化学异常模式,指明了区内黑色岩系的找矿方向。Good prospecting effect is gained by stream sediment survey in black shales area in Chengkou region of Northeast Chongqing,which consists of Upper Sinian to Lower Cambrian rocks such as black carbonaceous aleurolite,carbonaceous silty slate,and carbonaceous siliceous rocks.Focusing on the study of black shales and based on comprehensive analysis,this paper has pointed out that manganese,vanadium,silver,and barium are the main ore-forming elements,while manganese mainly enriches in Dengying and Doushantuo formations,vanadium and silver in Lujiaping Formation,and barium in Bashan Formation.The paper has also established a geochemical anomaly model for black shales and shown a clear direction for prospecting.

关 键 词：黑色岩系 地球化学 异常模式 钒和银 

分 类 号：P632[天文地球—地质矿产勘探]