湖北省富硒资源的地质特征及利用区划

摘要

On the basis of comprehensive collecting and integrating of existing research achievements,and the new samples collected in the field in typical regions of Hubei,the authors analyzed the geological characteristics of different Se resources,and discussed their potential exploitation and utilization.The results show that the Se-en-riched strata were Cambrian(32.1%),Permian(29.8%)and Sinian(25.8%),respectively.The Se-enriched rocks were mainly carbonaceous shale,carbonaceous slate,siliceous rock,carbonaceous siliceous rock and carbon-containing shale.The Se-enriched soil was mainly derived from lacustrine and alluvial deposits,and was distributed in the regions of Jianghan Plain,Enshi and southeastern Hubei.In particular, the distribution of Se-enriched soil in Enshi was in accordance with the distribution of Se-enriched Permian strata in this area and the Shuanghe Se mine and mineralized points in Enshi.The Se-enriched soil in southeastern Hubei,on the other hand,was related to both the Permian strata and the Se associated-deposit in this region.%在系统收集并综合相关成果资料的基础上,结合野外典型区域样品的采集和补充,全面分析了湖北省不同类型硒资源地质特征,并对其利用区划进行了探讨.研究表明:湖北省富硒地层主要有寒武系(32.1%)、二叠系(29.8%)及震旦系(25.8%);富硒岩石主要为炭质页岩、炭质板岩、硅质岩、炭质硅质岩和含炭页岩;表层富硒土壤主要分布于江汉平原区、恩施地区和鄂东南地区.主要为湖积、冲积成因.恩施地区的高硒和极高硒土壤与二叠系富硒地层及双河硒矿点和矿化点的分布相吻合.鄂东南地区富硒土壤一方面与二叠系地层有关,另一方面与鄂东南地区硒的伴生矿床有关.