太原盆地第四纪地层与环境演化  

Division of Quaternary Strata and Environment Evolution in Taiyuan Basin

作　　者：刘艳春[1] 李自红[1] 曾金艳[1] LIU Yanchun;LI Zihong;ZENG Jinyan(Shanxi Earthquake Agency,Taiyuan 030021,China)

机构地区：[1]山西省地震局,太原市030021

出　　处：《大地测量与地球动力学》2024年第8期847-852,866,共7页Journal of Geodesy and Geodynamics

基　　金：山西省基础研究计划(20210302123361);中国地震局地质研究所国家野外科学观测研究站研究课题(NORSTY2022-01);国家发展与改革委员会发改投资项目(20041138)。

摘　　要：基于太原盆地北部控制性钻孔的岩性特征、样品年龄、孢粉和沉积旋回分析,结合已有的太原盆地晚新生代地层的孢粉组合及地层岩性资料,对太原盆地埋藏第四纪地层进行划分。太原盆地第四纪地层从上到下可依次划分为:0~31.6 m为全新统(Q_(4));31.6~95.5 m为上更新统(Q_(3)),其中31.6~47.8 m为上更新统上部(Q^(3)_(3)),47.8~78.2 m为上更新统中部(Q_(3)^(2)),78.2~95.5 m为上更新统下部(Q_(3)^(1));95.5~186.16 m为中更新统(Q_(2));186.16~250.42 m为下更新统(Q_(1))。在此基础上,根据沉积物颜色与粒度特征及孢粉分析结果对太原盆地第四纪环境演化特征进行简要分析。Based on lithologic characteristics,samples age,sporo-pollen and sedimentary cycle analysis of the controlled well in northern Taiyuan basin,as well as the known data of sporo-pollen assemblage and strata lithology of late Cenozoic in Taiyuan basin,we divide the Quaternary strata in Taiyuan basin.The Quaternary strata from top to bottom in Taiyuan basin is divided into:from 0 to 31.6 meter is the Holocene;from 31.6 to 95.5 meter is the late Pleistocene,which is further divided into the early(31.6 to 47.8 meter),the middle(47.8 to 78.2 meter)and the late(78.2 to 95.5 meter)periods;from 95.5 to 186.16 meter is the middle Pleistocene;from 186.16 to 250.42 meter is the early Pleistocene.On this basis,we analyze the evolution characteristics of the Quaternary in Taiyuan basin based on the color and particle size features of sediment and sporo-pollen analysis results.

关 键 词：太原盆地 孢粉组合 第四纪地层 环境演化 

分 类 号：P313[天文地球—固体地球物理学] P539[天文地球—地球物理学]