华南地质与矿产2011，Vol.27Issue(3)：201-207,7.
闽西南大田地区中生代岩浆岩特征及构造环境演化
Geochemical Characteristics and Tectonic Significance of Mesozoic Magmatic Rocks from Datian,Southweste Fujian
摘要
Abstract
Mesozoic magmatic rocks in Datian area,Fujian province,are usually rich in SiO2 and Al2O3 content.Tangquan granodiorite which yielded zircon LA-ICP-MS U-Pb age of 168±3 Ma has high La/Yb and Sr,slightly Eu depletion,and poor in Y,is similar to adakite in geochemistry,indicate that it＇s formed in compressional setting related to crust thickening.NNE-trending granite veins which yielded zircon LA-ICP-MS U-Pb age of 138＋3 Ma has low La/Yb value and intensive Eu depletion,indicate that it＇s formed in late stage of compression process.Taihua granite which yielded Rb-Sr isochron age of 114.89±2.2 Ma has high La/Yb value and slightly Eu depletion,may be formed in extensional setting related to crust thinning when West Pacific subduction.关键词
岩浆岩/地球化学/锆石年代学/构造环境/中生代/大田地区/闽西南Key words
magmatic rock/geochemistry/zircon chronology/tectonic environment/Mesozoic/Datian/Southwest Fujian分类
天文与地球科学引用本文复制引用
范旭光,刘德民,李德威..闽西南大田地区中生代岩浆岩特征及构造环境演化[J].华南地质与矿产,2011,27(3):201-207,7.基金项目
建省大田县铅锌铜金属矿产成矿规律研究”项目资助 （）
