从太平洋中部热液矿物的发现探讨热液活动的广泛性

位于太平洋中部的克利帕顿和克拉里昂断裂带之间的研究区处于远离大陆的远洋深水环境，区内断裂构造和火山活动非常发育，热水活动强烈，由此形成一系列与热液活动及蚀变沉积有关的矿物，如磷灰石、碳磷灰石、稀士磷灰石、磷铝锶石、重晶石、碳酸钡矿、泡铋矿及非晶质ＳｉＯ＿２球。这都说明大洋中热水溶液活动并不仅限于洋脊轴部和裂谷地区，只要有较大规模的断裂存在．机会有热水溶液活动或海底热泉出现，随之会形成一系列与热液活动有关的矿物。

A Preliminary Discussion on the Extensiveness of Hydrothermal Activity Based on the Discovery of Hydrothermal Minerals in Cantral Pacific Ocean

The study area lies between.Clipperton and Clarion fault zones in Central Pacific,being in a pelagic environment far away from the continent.In this area,there are well-devoloped fractural structure and volcanic action aS well as strong hydrothermal activity, thus forming a series of minerals related to hydrothermal activity,alteration and deposition,such as apatite,dahllite,REE-bearig apatite,geyazite,barite,witherite,bismutite.and spherulitic amorphous silica.This demonstrates that hydrothermal activity is not merelyconfined to the axial part ot the ridge or the rift zone,and that wherever there is large-scale fault movement,there will appear submarine hydrother-mal solutions or thermal springs,accompanied by the formaion of a series of minerals related to hydrothermal alteration.