海洋沉积物测年方法综述  

A brief introduction on dating methods of marine sediments

作　　者：丁大林 徐继尚[2,4] 王继龙 李广雪 丁咚[2,4] 乔璐璐 于俊杰[3] DING Dalin;XU Jishang;WANG Jilong;LI Guangxue;DING Dong;QIAO Lulu;YU Junjie(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications, Chongqing 400065, China;College of Marine Geosciences, Ocean University of China, Qingdao 266100, Shandong, China;Nanjing Center, China Geological Survey, Jiangsu, Nanjing 210016, China;Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, Shandong, China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]中国海洋大学海洋地球科学学院,山东青岛266100 [3]中国地质调查局南京地质调查中心,江苏南京210016 [4]青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266100

出　　处：《华东地质》2021年第2期217-228,共12页East China Geology

基　　金：中国地质调查局“大陆架科学钻探(编号:GZH201100202)”;国家海洋局“全球变化与海气相互作用专项(编号:GASI-02-PAC-CJ15)”;中国地质调查局“宁德海岸带陆海统筹综合地质调查(编号:DD20189505)”项目联合资助。

摘　　要：海洋沉积物是研究古气候变化、海平面升降、地球化学循环等重大科学问题的载体之一,精确的测年结果是上述研究的重要前提。随着海洋沉积物测年理论、技术设备不断突破,测年方法如210Pb法、137Cs法、AMS14C测年、光释光法、古地磁定年、天文轨道调谐法、氧同位素曲线对比、电子自旋共振法、铀系法等层出不穷。文章总结了海洋地质中沉积物常用测年方法的基本原理、适用对象及测年范围,梳理了不同测年方法的优、缺点,便于科研人员研究不同类型的海洋沉积物时合理选择测年方法。各种测年方法都有其局限性,为得到更精确的年代标尺,可对同一研究对象使用多种方法进行测年,相互验证,提高测年准确度和精度。Marine sediment is one of important carriers for studying the issues on global scale,such as global climate,sea-level fluctuation,paleontological productivity evolution and geochemical cycle,etc.And accurate age-dating is the most important prerequisites for the above studies.With the constantly breakthrough of marine sediment dating theory and technical equipment,dating methods such as 210Pb,137Cs,AMS14C,optically stimulated luminescence,paleomagnetism,astronomical orbit tuning,oxygen isotope curve comparison,electron paramagnetic resonance and uranium series dating are appearing over the past one hundred years.This paper summarizes the basic principles,applicable objects and age ranges of different methods that commonly used in marine geology,combing the advantages and disadvantages of different dating methods,so that scientific researchers can choose the suitable measurement in face of various type marine sediments.Each method has its own limitations,in order to obtain a more accurate time scale,it is necessary to use several dating methods on the same research object for mutual verification,to improve the accuracy and precision.

关 键 词：海洋沉积物 测年方法 测年技术 测年设备 

分 类 号：P533[天文地球—古生物学与地层学]