马里亚纳海槽海底热液硫化物的同位素地球化学特征  

作　　者：吴世迎[1] 白黎明[1] 吴军瑞[1] 

机构地区：[1]国家海洋局第一海洋研究所．山东青岛266061

出　　处：《质谱学报》2004年第B10期173-174,共2页Journal of Chinese Mass Spectrometry Society

摘　　要：Based on δ^18O,δD,δ^30Si and δ^34S values stable isotope determinations and previous studies, the hydrothermal chimneys in the Mariana Trough is the silicic chimney consisting dominantly of amorphous SiO2(opal) whose oxygen isotope temperature is generally lower than 200℃,reflectingintermediate-low temperature type. Volcanic hydrothermal sulfides with the metallic mineral has a intermediate-higher oxygen isotope temperature(peak value 275℃) in the Mariana Arc. hydrothermal sulfides in the Mariana Trough is closely related to the oceanic environment and not affected by atmospheric precipitation.

关 键 词：马里亚纳海槽 海底热液硫化物 同位素地球化学 形成温度 

分 类 号：O613.51[理学—无机化学] P736.44[理学—化学]