湖泊年纹层研究进展与展望  

Progress and Prospects of Lacustrine Varve Research

作　　者：田兴 高远[2] 王成善[2] TIAN Xing;GAO Yuan;WANG ChengShan(Chongqing Key Laboratory of Karst Environment,School of Geographical Sciences,Southwest University,Chongqing 400715,China;School of Earth Sciences and Resources,State Key Laboratory of Biogeology and Environmental Geology,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]西南大学地理科学学院,岩溶环境重庆市重点实验室,重庆400715 [2]中国地质大学(北京)地球科学与资源学院,生物地质与环境地质国家重点实验室,北京100083

出　　处：《沉积学报》2023年第6期1645-1661,共17页Acta Sedimentologica Sinica

基　　金：国家自然科学基金项目(41972096,42202108)。

摘　　要：[意义]湖泊年纹层是季节—年际尺度的超高分辨率地质记录,对发展高精度地质年代学和研究古气候与古环境具有重要意义。[进展]综合前人研究成果,对湖泊年纹层的形成和保存、识别和分类、纹层年代学以及湖泊年纹层对古气候和古环境的指示等方面进行了总结:(1)湖泊年纹层的形成和保存受季节性气候和环境变化的影响,在北半球中高纬地区分布较广;(2)对湖泊年纹层的鉴定需结合其物理、化学和生物特征,并通过放射性同位素定年手段进行交叉验证;(3)湖泊年纹层可用于建立精确的或浮动的年代学标尺;(4)湖泊年纹层普遍用于重建年际古气候与古环境,但是研究程度不均衡,时间上主要集中于第四纪,空间上主要集中于欧美地区。[结论与展望]结合目前湖泊年纹层的研究现状和不足,未来应加强现代沉积过程监测,优化湖泊年纹层识别标准。同时利用多种研究手段,系统构建并完善湖泊年纹层研究体系。深入挖掘深时湖泊年纹层的研究价值,聚焦深时年际古气候变化等科学前沿。[Significance]As a high-resolution geological record with seasonal to inter-annual time scales,the lacus-trine varves play an essential role in paleoclimatic and paleoenvironmental research.[Progress]In this review,we summarized the formation and preservation of lacustrine varves,their identification and classification,varve chronol-ogy,anf their implications for paleoclimatic and paleoenvironmental changes.Our findings reveal that(1)the forma-tion and preservation of lacustrine varves are influenced by seasonal paleoclimatic and paleoenvironmental changes and are mainly distributed in high-latitude areas of the Northern Hemisphere;(2)the geophysical,geochemical,and geobiological features,or cross-validation of other radiometric dating methods,are necessary to verify the annual nature of the varves;(3)lacustrine varves can be used to establish accurate or floating geochronologies;and(4)la-custrine varves have been used to reconstruct paleoclimatic and paleoenvironmental changes,but research on lacus-trine varves is unevenly distributed,with a temporal focus on the Quaternary and a spatial focus on Europe and Amer-icas.[Conclusions and Prospects]Based on current progresses and problems in lacustrine varve research,future at-tention should be paid to:(1)strengthen modern sediment monitoring and optimize the identification criteria;(2)systematically construct and improve the research system of lacustrine varves with multiple research approaches;and(3)dig deep into the deep-time lacustrine varves and focus on frontier scientific issues such as annual and inter-annual paleoclimate change.

关 键 词：湖泊年纹层 鉴别方法 分布 纹层年代学 古气候 古环境 

分 类 号：P512.2[天文地球—地质学]