陨石含水矿物成因评述和地球水来源的探讨  

A REVIEW ON ORIGIN OF HYDROITES IN METEORITES AND A DISCUSSION ON SOURCE OF EARTH'S WATER

作　　者：侯渭[1] 谢鸿森[1] 周文戈[1] 

机构地区：[1]中国科学院地球化学研究所,贵州贵阳550002

出　　处：《地球科学进展》2001年第2期209-214,共6页Advances in Earth Science

基　　金：国家自然科学基金!项目"高温高压下熔体与流体的混溶和分离的实验研究"(编号 :49772 111)资助

摘　　要：简要介绍了球粒陨石中含水矿物的种类和主要特点。根据陨石中含水矿物与无水矿物、有机质的关系 ,太阳星云凝聚模型中有关水蒸汽与无水矿物反应的理论 ,以及有关的同位素资料的综合分析 ,推断形成含水矿物的水化作用是太阳星云凝聚作用的一个阶段。通过不同类型球粒陨石氧同位素组成和含水矿物数量的比较 ,论证了太阳星云盘中发生水化作用的范围 ,从而对地球水的来源进行了讨论。The hydroites of meteorites mostly are in matrix of carbonaceous chondrites. Their major phases are phyllosilicates, and hydroxides, carbonates and sulfates are minor phases. Based on the relation of hydroites and anhydrous minerals, the relation of hydroites and organic matter, the reactions of water vapour and anhydrous minerals in nebular,and isotopic composations of chondrites, we concluded that aqueous alteration occurred during nebular condensation. Through comparative study on oxygen isotopic composition and water content of chondrite groups, and the fact that water or water ice exists in terrestriial planets,such as Earth, Mar, Mercury and Moon, we infer that the space range of nebular aqueous alteration involve terrestrial planet region and astroid region of nebular disk. Therefore the source of water in Earth must be with nebular aqueous alteration.

关 键 词：球粒陨石 含水矿物 地球水 来源 成因 太阳星云 凝聚作用 水化作用 

分 类 号：P185.83[天文地球—天文学] P578.41