【摘要】 通过 154个全岩化学分析资料的综合研究 ,探讨了腾冲火山岩的岩石类型、化学成分特征和共生组合系列。第一期 (N2 )火山岩为高A1弱碱性—钙碱性橄榄玄武岩 (含少量安山岩 ) ;第二期 (Q1)为高K钙碱性安山—英安岩类 ;第三期 (Q3)为高A1高K弱碱性—钙碱性橄榄玄武岩—玄武安山岩 ;第四期 (Q4 )为高A1高K钙碱性安山岩—粗安岩。更多还原

【Abstract】 According to a comprehensive research of the data of 154 whole rock chemical analyses, the rock type, characteristics of the chemical composition and the paragenetic association series of the volcanic rocks in Tengchong have been studied in this paper. The volcanic rocks are the high Al alkalescent to calc alkali olivine basalts(including a little andesites) in the first period(N 2), the high K calc alkali andesites to dacites in the second period(Q 1), the high Al and high K alkalescent to calc alkali olivine basalts and basaltic andesites in the third period(Q 3) and the high Al and high K calc alkali andesites and trachyandesites in the fourth one (Q 4).更多还原