陆相气候敏感沉积物在深时古气候演变研究中的应用——以我国中东部白垩纪古气候研究为例  

Application of Continental Climate Sensitive Deposits in the Study of Deep Time Paleoclimate Evolution---A Case Study of Cretaceous Paleoclimate in Central and Eastern China

作　　者：叶婷婷 颜照坤 张代柱 邵崇建 颜晨雨 赵文武 龚楚云 王锦程[3] YE Tingting;YAN Zhaokun;ZHANG Daizhu;SHAO Chongjian;YAN Chenyu;ZHAO Wenwu;GONG Chuyun;WANG Jincheng(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,330013,Nanchang,PRC;School of Earth Sciences,East China University of Technology,330013,Nanchang,PRC;Exploration Division,Petro China Dagang Oil Field Company,300280,Tianjin,PRC)

机构地区：[1]东华理工大学核资源与环境国家重点实验室,南昌330013 [2]东华理工大学地球科学学院,南昌330013 [3]中国石油大港油田公司勘探开发研究院,天津300280

出　　处：《江西科学》2023年第2期317-325,共9页Jiangxi Science

基　　金：国家自然科学基金项目(41502116);核资源与环境国家重点实验室联合创新基金项目(2022NRE-LH-04)。

摘　　要：陆相气候敏感沉积物蕴含着丰富的古气候信息,是开展深时古气候研究的重要依据。我国学者利用陆相气候敏感沉积物对深时古气候演变开展了大量的研究工作,取得了丰硕的成果。介绍了常被应用于深时古气候研究的陆相气候敏感沉积物类型,并重点介绍了我国中东部白垩纪陆相气候敏感沉积物的研究进展。通过对我国中东部白垩纪陆相敏感沉积物分布特征的分析发现:在空间上,早白垩世的古气候环境可划分为半干旱气候区、干旱气候区与湿润气候区;晚白垩世的古气候环境可划分为干旱气候区、半干旱气候区与半湿润气候区。在时间上,与早白垩世相比,晚白垩世的干旱气候区范围有明显的扩张趋势,湿润气候区的范围逐渐向东北方向缩小。可见,白垩纪我国中东部气候环境整体上具有干旱化逐渐增强的趋势。最后针对陆相气候敏感沉积物研究存在的问题进行分析,并对其未来发展趋势进行了展望,以期为今后陆相气候敏感沉积物研究及其在深时古气候演变研究中的应用提供参考。Continental climate-sensitive deposits contain abundant paleoclimate information,which is an important basis for deep time paleoclimate research.Scholars in China have carried out a lot of research work on the evolution of the deep time paleoclimate by using the terrestrial climate-sensitive deposits,and achieved fruitful results.This paper introduced the types of terrestrial climate-sensitive deposits that were often used in the study of the deep time paleoclimate,and focused on the research progress of the Cretaceous terrestrial climate-sensitive deposits in central and easter China.Based on the analysis of the distribution characteristics of Cretaceous sensitive continental deposits in central and eastern China,it is found that the paleoclimate environment of early Cretaceous can be divided into semi-arid climate zone,arid climate zone and humid climate zone.The paleoclimate environment of Late Cretaceous can be divided into arid climate zone,semi-arid climate zone and semi-humid climate zone.In terms of time,compared with the early Cretaceous,the dry climate area of the late Cretaceous showed an obvious expansion trend,and the humid climate area gradually narrowed to the northeast.It can be seen that the climate and environment in the middle and eastern part of China in Cretaceous showed a trend of increasing drought.Finally,the existing problems in the study of continental climate-sensitive deposits are analyzed,and its future development trend is prospected,so as to provide reference for the future study of continental climate-sensitive deposits and its application in the study of deep time paleoclimate evolution.

关 键 词：陆相气候敏感沉积物 白垩纪 深时古气候 研究进展 展望 

分 类 号：P532[天文地球—古生物学与地层学]