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COMPONENTS OF FLUID INCLUSIONS OF BASALT FROM THE SOUTHERN OKINAWA TROUGH AND THEIR IMPLICATIONS
Author(s): 
Pages: 42-46
Year: Issue:  1
Journal: OCEANOLOGIA ET LIMNOLOGIA SINICA

Keyword:  玄武岩冲绳海槽流体包裹体激光拉曼光谱;
Abstract: 用激光拉曼探针分析了冲绳海槽南部橄榄拉斑玄武岩中的流体包裹体成分.结果表明,流体包裹体的主要成分为CO2,此外,还有H2O、H2S、CH4、N2、C2H2、C2H4、C3H8组分.不同宿主矿物,其包裹体成分中CO2、H2O和CH4的相对含量也不同,其中,钙长石中包裹体的CO2含量最高,贵橄榄石中的次之,普通辉石中的最少.CH4和H2O的含量趋势与CO2相反.根据这3种宿主矿物中流体成分及其含量变化特点,推断这3种宿主矿物的结晶顺序为钙长石、贵橄榄石、普通辉石,并认为流体包裹体中的烃类和水可能主要来自熔体上升过程中所接触的沉积地层.
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