冲绳海槽南部玄武岩中的流体包裹体成分及其意义  

COMPONENTS OF FLUID INCLUSIONS OF BASALT FROM THE SOUTHERN OKINAWA TROUGH AND THEIR IMPLICATIONS

作　　者：韩喜球[1] 马维林[2] 金翔龙[2] 杨树锋[1] 高金耀[2] 

机构地区：[1]浙江大学地球科学系,杭州310027 [2]国家海洋局第二海洋研究所,国家海洋局海底科学重点实验室,杭州310012

出　　处：《海洋与湖沼》2002年第1期42-46,共5页Oceanologia Et Limnologia Sinica

基　　金：国家"973"计划资助项目 ;G2 0 0 0 0 0 4 6 70 3-0 2号;国家海洋局海底科学实验室资助项目;980 4号

摘　　要：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 H2 O、H2 S、CH4 、N2 、C2 H2 、C2 H4 、C3 H8组分。不同宿主矿物 ,其包裹体成分中 CO2 、H2 O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 H2 O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 。The components of fluid inclusions in tholeiite collected from the southern Okinawa Trough are analyzed by Laser Raman Spectroscopy The main components of fluid inclusions are CO 2,H 2O,H 2S,CH 4,N 2,C 2H 2,C 2H 4 and C 3H 8 In different host minerals,the contents of CO 2,H 2O and CH 4 are different The CO 2 content is the highest in anorthite,while that in crysolite is in the next place and that in augite is the least However,the content trend of CH 4 and H 2O is on the opposite According to the fluid components and their contents in the studied host minerals,it is inferred that the crystallization order of the studied host minerals are anorthite,crysolite and then augite It is also concluded that the hydrocarbon and water maybe primarily came from sedimentary strata when lava is arising

关 键 词：玄武岩 冲绳海槽 流体包裹体 激光拉曼光谱 

分 类 号：P736.3[天文地球—海洋地质] P588.145[天文地球—海洋科学]