沉积岩定年及应用:问题与展望  

Dating and Application for Sedimentary Rocks:Problems and prospects

作　　者：韩志宇 王非[1,2,3] 师文贝 HAN ZhiYu;WANG Fei;SHI WenBei(Institute of Geology and Geophysics,Chinese Academy of Sciences,State Key Laboratory of Lithospheric Evdution,Beijing 100029,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100029,China;Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]中国科学院地质与地球物理研究所,岩石圈演化国家重点实验室,北京100029 [2]中国科学院大学行星与地球科学学院,北京100049 [3]中国科学院地球科学研究院,北京100029

出　　处：《沉积学报》2022年第2期360-379,共20页Acta Sedimentologica Sinica

基　　金：国家自然科学基金重点项目(41930106);国家重点研发计划(2016YFC09)。

摘　　要：确定沉积时代及重建成岩过程仍然是目前年代学领域亟需攻关的科学问题。综述了适用于沉积岩定年的传统长周期同位素方法,系统地回顾了沉积岩中广泛发育的自生矿物海绿石、伊利石、钾长石和方解石年代学研究中的关键问题以及它们在沉积地层定年、恢复盆地热流史、沉积矿床间接定年、确定油气注入时间、确定脆性断层活动时间、确定古地磁重磁化事件等应用方面的研究现状。针对目前存在的问题展望了今后需要攻关的方向,为我国沉积岩年代学的发展抛砖引玉。Dating sedimentary rocks and reconstructing the diagenetic process continue to be urgent scientific prob⁃lems in the field of chronology.This study introduces traditional long-lived radioisotope systems suitable for sedimen⁃tary rocks and systematically reviews the key problems of dating glauconite,illite,K-feldspar and calcite which wide⁃ly occur in sedimentary rocks.This is accompanied by a discussion of the applicability of these authigenic minerals for dating sediments,recovering heat flow events,indirectly dating ore deposits,reconstructing the history of hydro⁃carbon injection,dating fault activity and determining remagnetization events.The study predicts the development di⁃rection of isotopic chronology of sedimentary rocks,in the promotion of sedimentary chronological development in our country.

关 键 词：沉积岩同位素年代学 海绿石 伊利石 钾长石 方解石 

分 类 号：P597.3[天文地球—地球化学]