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使用氧同位素方法 ,测试了西太平洋马里亚纳岛弧、马里亚纳海槽、冲绳海槽和东太平洋加拉帕戈斯裂谷的海底热液烟囱和硫化物全岩样品。结果表明 :马里亚纳岛弧上的埃斯梅拉尔达破火山口的热液硫化物的形成温度最高 (达 2 75℃ ) ,而成为高温产物的代表 ;冲绳海槽和加拉帕戈斯裂谷烟囱 ,表现为中高温类型 ,其氧同位素温度在 1 5 0℃左右 ;马里亚纳海槽以蛋白石为主要矿物的烟囱物 ,则显示出典型的低温热液类型 ,少量黄铁矿砂试样则表现出中温类型特征。但上述区域大都不同程度地存在有闪锌矿、黄铁矿、黄铜矿等中高温热液矿物 ,说明研究区除马里亚纳海槽明显有中低温热液活动类型外 ,其它区域皆具备中高温热液活动特征
Using the oxygen isotope method, seabed hydrothermal chimneys and sulfide whole rock samples from the Mariana Island Arc in the Western Pacific Ocean, the Mariana Trough, the Okinawa Trough and the Galactic Pacific Rim in the Eastern Pacific were tested. The results show that the hydrothermal sulfide formation of the Esmeralda caldera on the Mariana Island arc the highest (up to 2 75 ° C) and becomes a representative of high temperature products; the Okinawa Trough and Galapagos The Rift Valley chimneys, which are characterized by medium and high temperature types, have oxygen isotopic temperatures of around 150 ° C. The chimneys containing opal as the major mineral in the Mariana Trough show typical low-temperature hydrothermal types with small amounts of pyrite Sand samples showed moderate temperature characteristics. However, mid- and high-temperature hydrothermal minerals such as sphalerite, pyrite and chalcopyrite exist in most of the above regions, indicating that except for the middle and low-temperature hydrothermal activity types in the Mariana Trough in the study area, Middle and high temperature hydrothermal activity characteristics