中国湖泊沉积物纹层年代学研究进展

发布时间：2018-07-18 08:38

【摘要】：晚第四纪尤其是全新世是地球气候系统演化的一个关键地质时期,是探究全球及区域重大气候环境事件,揭示其内在演化规律,预测未来气候变化的关键时段.国内外发表的文献中,主要的年代学方法有:AMS14C年代学、石笋U系测年和纹层年代学等.其中纹层年代学被认为是比较精确的定年方法.近年来,国内外学者在中国的一些湖泊中发现了年纹层沉积,例如龙岗火山区的小龙湾、四海龙湾及二龙湾玛珥湖,柴达木盆地的苏干湖,青藏高原东部的新路海以及可可西里地区的库赛湖.本文概述我国近年来湖泊纹层年代学研究进展,总结中国湖泊年纹层类型、特征及纹层年代学研究方法、误差估计等方面的进展,并提出未来年纹层研究应注意的问题,以期促进中国湖泊沉积物年纹层研究的进一步发展.
[Abstract]:The late Quaternary, especially the Holocene, is a key geological period for the evolution of the Earth's climate system. In the literature published at home and abroad, the main chronological methods are: AMS 14C chronology, stalagmite U-system dating and laminae chronology. Laminae chronology is considered to be a more accurate dating method. In recent years, scholars at home and abroad have found annual grain deposits in some lakes in China, such as Xiaolong Bay in the Longgang Fire Mountain area, Maer Lake in the four Seas and Erlong Bay, and Sugan Lake in the Qaidam Basin. Xiluhai in the eastern part of the Qinghai-Tibet Plateau and Kusai Lake in the Hokoxili region. This paper summarizes the recent advances in the study of lacustrine stratigraphic chronology in China, summarizes the types, characteristics, methods and error estimates of the annual laminae of lakes in China, and puts forward some problems that should be paid attention to in the future study of the laminae. In order to promote the further development of the study on the annual grain layer of lake sediments in China.
【作者单位】：浙江师范大学化学与生命科学学院环境演变与古生态学实验室;中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室;中国科学院大学地球科学学院中国科学院计算地球动力学重点实验室;首都师范大学资源环境与旅游学院;
【基金】：国家自然科学基金项目(41472320) 湖泊与环境国家重点实验室开放基金项目(2014SKL001)联合资助
【分类号】：P512.2;P597.3

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