| 蒸发岩非传统稳定同位素研究综述 |
| |
| 引用本文： | 夏芝广,胡忠亚,刘传,魏海珍,李伟强.蒸发岩非传统稳定同位素研究综述[J].地学前缘,2021,28(6):29-45. |
| |
| 作者姓名： | 夏芝广 胡忠亚 刘传 魏海珍 李伟强 |
| |
| 作者单位： | 1.南京大学 地球科学与工程学院, 江苏 南京 210023;2.同济大学 海洋与地球科学学院, 上海 200092 |
| |
| 基金项目： | 国家重点研发计划项目“特提斯东段深部海相钾盐勘查增储示范(2017YFC0602801)” |
| |
| 摘 要： | 蒸发岩是海水/卤水蒸发浓缩的产物,不同的水化学环境下析出的蒸发岩类型不同,其在不同的地质历史时期都有分布,是重要的古海水和古环境记录载体。蒸发岩研究的主要问题包括:蒸发岩的物质来源、形成时代、蒸发盆地和卤水的演化历史、蒸发岩矿物所记录的环境变化。一些矿物、元素及同位素指标可用于解决这些问题,其中稳定同位素对于示踪蒸发岩的物质来源与形成过程具有不可替代的作用。近20年来,非传统稳定同位素地球化学获得快速发展,并在蒸发岩研究中获得成功应用,这些同位素体系包括阴离子元素B、Cl和Br,以及阳离子元素Mg、K和Ca。本文综述了多个非传统稳定同位素在蒸发岩领域的研究,主要包括:蒸发岩矿物与溶液之间的同位素分馏系数、蒸发岩的同位素信息重建古海水同位素组成及示踪蒸发岩成因和时代等。
|
| 关 键 词： | 蒸发岩 卤水 古海水 非传统稳定同位素 同位素分馏 示踪 |
| 收稿时间： | 2021-01-10 |
Non-traditional stable isotopes in evaporite system:A research review |
| |
| XIA Zhiguang,HU Zhongya,LIU Chuan,WEI Haizhen,LI Weiqiang.Non-traditional stable isotopes in evaporite system:A research review[J].Earth Science Frontiers,2021,28(6):29-45. |
| |
| Authors: | XIA Zhiguang HU Zhongya LIU Chuan WEI Haizhen LI Weiqiang |
| |
| Institution: | 1. School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China;2. School of Ocean and Earth Sciences, Tongji University, Shanghai 200092, China |
| |
| Abstract: | Evaporites are the product of seawater/brine concentration by evaporation. Evaporites of various types are deposited in different hydrochemical environments and distributed in different geological periods. They are important proxies for paleo-seawater and paleoenvironment. The key issues in evaporites studies include the source and formation age of evaporates, the evolutionary history of evaporative basin/brine, and environmental changes recorded by the evaporite minerals. Mineralogical and geochemical criteria (such as elemental ratio and isotopic composition) have been used to resolve these issues. Among the methods used, stable isotopes play an important role in tracing the source and formation processes of evaporites. In the past 20 years non-traditional stable isotope geochemistry has developed rapidly and been successfully applied in evaporites research. These isotope systems consist of anionic elements B, Cl, and Br, and cationic elements Mg, K, and Ca. This paper reviews the advances of several non-traditional stable isotopes in evaporites research, mainly on stable isotope fractionation between evaporite minerals and brine, reconstruction of isotopic composition of paleo-seawater, and use of isotopic information in tracing genesis and formation age of evaporites. |
| |
| Keywords: | evaporite brine paleo-seawater non-traditional stable isotope isotope fractionation tracing |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《地学前缘》浏览原始摘要信息 |
| 点击此处可从《地学前缘》下载免费的PDF全文 |
|
