白银厂矿田早中寒武世酸性火山岩地球化学及形成环境的研究  

Studies on Geochemistry and Genetic Environment of the Early and Middle Combrian Acidic Volcanic Rocks in Baiyinchang Ore Field

作　　者：解宪丽[1] 

机构地区：[1]临沂师范学院地理系,山东临沂276005

出　　处：《临沂师范学院学报》2000年第6期48-51,共4页Journal of Linyi Teachers' College

摘　　要：白银厂矿田早中寒武世酸性火山岩微量元素和同位素地球化学特征表明 :本区酸性火山岩成岩时所处的构造环境为火山弧环境 ,是俯冲洋壳熔融生成的岩浆经结晶分异、地壳混染等演化过程的产物 .The features of trace elements and isotopes indicate that the rocks formed at volcanic arc tectonic setting and were derived from the partial melting of subducted plate and subsequent fractional crystallization and crustal contamination.

关 键 词：白银厂 酸性火山岩 地球化学 形成环境 火山弧环境 结晶分析 地壳混染 

分 类 号：P588.14[天文地球—岩石学] P59[天文地球—地质学]