火山作用对板块构造环境的判别方法  

THE PLATE TECTONIC ENVIRONMENT DISCRIMINATION BY VOLCANISM

作　　者：李旭俊 刘仕承 严城民[2] LI Xu-jun;LIU Shi-cheng;YAN Cheng-min(Yunnan Au Mining Group(Ltd),Kunming 650200;Regional Geological Survey,Yunnan Bureau of Geology & Mineral Resources,Yuxi 653100)

机构地区：[1]云南黄金矿业集团股份有限公司,云南昆明650200 [2]云南省地矿局区域地质矿产调查大队,云南玉溪653100

出　　处：《云南地质》2019年第1期38-44,共7页Yunnan Geology

摘　　要：在系统收集相关资料的基础上,将火山作用对板块构造环境的判别方法进行综述。不同的火山岩出现于板块构造的不同单元,判别方法主要依靠岩石的常量元素、稀土元素、微量元素进行图解判别。对碱性系列、钙碱性系列的岩石,只需使用各种构造环境的判别图解。对拉斑系列的岩石,需要进一步对岛弧拉斑玄武岩(OIB)、洋中脊玄武岩(MORB)、洋岛玄武岩(IAT)、板内玄武岩(WPB)的环境判别。中酸性火山岩多见于岛弧和伸展盆地,判别图解较少。According to the systematical collection of data,we have a comprehensive interpretation of olate tectonic environment discrimination of volcanic rock.The various volcanic rock is occurred in different plate tectonic environment.The discrimination is mainly with various diagrams of rock major element,REE,trace element.To the alkaline series and calc-alkaline series,it is only with various tectonic environment discrimination diagram,whereas island arc tholeiite(OIB),ocean ridge basalt(MORB),ocean island basalt(IAT),within-plate basalt(WPB)environment discrimination are necessary to the tholeiite series rock.The intermediate-acid volcanic rock is mostly occurred in island arc and extensive basin,discrimination diagram less.

关 键 词：火山作用 板块构造环境 判别方法 

分 类 号：P511.3[天文地球—地质学] P542.4