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《Acta Sedimentologica Sinica》 2018-03
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Paleosols: Sensitive Indicators of Depositional Environments and Paleoclimate

CHEN LiuQin;LIU Xin;LI PengCheng;State Key Laboratory Breeding Base of Nuclear Resources and Environment,East China University of Technology;Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral,Shandong University of Science and Technology;School of Earth Sciences,East China University of Technology;  
Paleosols are sensitive to indicate depositional environments and paleoclimate changes. At the present days,the studies of paleoenvironment and paleoclimate based on paleosols become one of the hot scientific points in sedimentology. It is an effective and valuable approach by using paleosols to untangle major geological events during the evolution history of our planet. Many abroad studies on paleosols have dealt with almost all sedimentary records from the Archean to Quaternary Period. In contrast,some domestic work has been exclusively conducted on the paleosols of the Quaternary Period. However,few works have been done on the paleosols of the very long pre-Quaternary time in China. On the basis of a brief introduction of diagnostic features and burial alteration of paleosols,this paper analyzes the roles of paleosols in the depositional environment interpretation,and stratigraphic division and correlation.Afterwards,the emphases are put on estimation of soil-forming processes,pedo-types,and quantitative paleoclimate reconstruction( MAP,MAT,and pCO_2) based on proxies including depth of Bk horizon,elemental geochemistry,pedogenic carbonate isotopes. In addition,the applicability of different empirical formula for paleoclimatic estimation is also summarized and discussed. In recent years,much progress has been made on the paleosols from the continental Cretaceous clastic rocks in the Songliao,Sichuan,and Jiaolai basins in China. Moreover,abundant paleosols are observed within the Cretaceous alluvial redbeds of Jiangxi,Guangdong,and Zhejiang provinces in SE China,and they were interpreted as paleosol sequences formed in the arid and oxidizing depositional environments. The goal of this synthesis is to attract attention from more domestic sedimentologists to involve in the research of paleosols preserved in the pre-Quaternary sedimentary strata to achieve more contribution for ancient environmental changes.
【Fund】: 国家自然科学基金项目(41602113);; 东华理工大学省部共建核资源与环境国家重点实验室培育基地开放基金(NRE1605);; 刘宝珺地学青年科学基金暨山东省沉积成矿作用与沉积矿产重点实验室(山东科技大学)开放基金(DMSM2017011)~~
【CateGory Index】: P531;P532
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