四川木里长枪穹隆石英流体包裹体特征及其地质意义  

Features of Fluid Inclusions in Quartz from the Changqiang Dome,Muli,Sichuan and Its Geological Significances

作　　者：刘俊思 阚泽忠[2] 秦华中[3] 曾祥贵[4] 

机构地区：[1]四川省地矿局攀西地质队,四川西昌615000 [2]四川省地调院,成都610081 [3]四川省地矿局区调队,四川双流610213 [4]四川省地矿局404地质队,四川西昌615000

出　　处：《四川地质学报》2005年第4期202-207,共6页Acta Geologica Sichuan

摘　　要：通过木里长枪构造—热穹隆体砂泥质变质岩及分泌石英脉中较系统的石英流体包裹体测试与研究,表明穹隆体中石英流体包裹体主要有NaCl—H2O、纯H2O及CO2—H2O、纯CO2等四类,有三个形成或捕获阶段,分别与穹隆体变形变质阶段吻合,其所限定的穹隆体变质条件及抬升P-T轨迹与变形-变质演化研究结果基本一致。A study of fluid inclusions in quartz in sandy and pelitic metamorphic rocks and laterogenic quartz veins from the Changqiang thermal dome indicates that the fluid inclusions may be divided into 4 types such as NaCl- H2O type, pure H2O type, CO2 - H2O type and pure CO2 type which were trapped in 3 stages, coinciding with corresponding deformation- metamorphism stages, respectively. Metamorphic conditions and P - T locus for the dome body prescribed by them are consistent with the results of research on evolution of deformation and metamorphism of the dome body.

关 键 词：石英流体包裹体 变质作用条件 抬升P-T轨迹 长枪穹隆 木里 

分 类 号：P588.325[天文地球—岩石学]