风化壳剖面的定年研究  

Review on the Dating of the Weathering Profiles

作　　者：孙承兴[1] 王世杰[1] 刘秀明[1] 季宏兵[1] 

机构地区：[1]中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002

出　　处：《矿物岩石地球化学通报》2000年第1期54-59,共6页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金!(49833002);国家攀登计划(95预39) 三级专题资助

摘　　要：风化壳时间序列的建立是提取有关信息的根本前提。然而，风化壳的定年一直被认为是一道国际难题。近年来，风化作用及风化壳剖面的研究越来越受到人们的关注，有关风化壳定年的研究也取得了一些重要进展。本文对此进行了归纳和总结，并对各种方法进行了评述。Weathering plays a significant role in the evolution of geochemistry of the Earth's surface and region environment.Precise dating of the weathering profiles may provide important information on these evolutions. However, direct dating of weathering events and profiles have been considered an international difficult problem. The dating methods of weathering crust has made great advances in last decades, such as dating by the δ 18 O values of clay minerals, the K/Ar and 40 Ar/ 39 Ar study of cryptomelanes, the chemical weathering rates, and so on. Some new important methods of dating weathering crust were introduced and reviewed in this paper.

关 键 词：风化壳 定年 剖面 风化作用 时间序列 评述 归纳 信息 国际 前提 

分 类 号：P594.2[天文地球—地球化学]