中国地质调查2025，Vol.12Issue(2)：51-59,9.DOI:10.19388/j.zgdzdc.2023.310
三河—蓟州全新世泥炭形成时代及古环境意义
Formation age and palaeoenvironment significance of Holocene peat in Sanhe-Jizhou area
摘要
Abstract
The peat layer was widely distributed in piedmont alluvial plain of the southern Yan Mountains.How-ever,its formation age is still controversial,with relatively weak relevant research of climate environment.The 14 C dating work of typical peat profiles was conducted from Sanhe in Heibei Province to Jizhou in Tianjin.The peat formation time was divided into two periods,on the basis of sporopollen and other proxy indicators,and its envi-ronment characteristics were also studied.14 C dating showed that the cool-forming period of Touying peat layer in Jizhou was Early Holocene(10 500 a B.P.),and the main body of Bulaodian peat layer in Sanhe was Late Holo-cene(3 500～2 400 a B.P.).The climate of Early Holocene was inferred to be from warm and humid to cool and slightly humid,according to sporopollen assemblage features of Touying peat layer and its underlying stratum in Jizhou and the previous sporopollen research of Bulaodian peat layer and other fossil assemblage.This research could provide basis for the Quaternary stratigraphic division and paleoenvironment restoration in this area.关键词
泥炭层/形成时代/古气候/河北三河/天津蓟州Key words
peat layer/formation age/paleoclimate/Sanhe in Hebei Province/Jizhou in Tianjin分类
地质学引用本文复制引用
陈海燕,胡新茁,张运强,孙楠..三河—蓟州全新世泥炭形成时代及古环境意义[J].中国地质调查,2025,12(2):51-59,9.基金项目
中国地质调查局"特殊地质地貌区填图试点——河北1∶5万大厂回族自治县等三幅第四系覆盖区地质填图(编号:DD20160060)"及"京津冀山前冲洪积平原区1∶50 000 填图方法总结(编号:DD20160060)"项目联合资助. （编号:DD20160060）
