临汾盆地中更新世中晚期沉积环境与气候变化研究  

Evolution of sedimentary environment and climate change in Linfen basin since Mid- late Pleistocene

作　　者：周汶[1] 韩军青[1] 田庆春[1] 党玉婷[1] 

机构地区：[1]山西师范大学地理科学学院,临汾041004

出　　处：《干旱区资源与环境》2016年第4期172-177,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(41071004)资助

摘　　要：临汾盆地是山西地堑系南部的一个断陷盆地,是研究第四纪环境变化的重要地区。文中以临汾盆地郭家庄钻孔(GJZ)剖面为研究对象,对钻孔岩芯进行磁化率和粒度测定,并与其它典型剖面对比分析,发现临汾盆地中更新世(Q2)中晚期的沉积环境:上部为黄土沉积下部为河湖相沉积,气候共经历了四个冷-暖交替阶段。磁化率和沉积物粒度与西峰剖面对比,表现出相同气候条件下的不同沉积环境的变化。该结果为研究山西中部盆地这一时期沉积环境和气候变化具有重要意义。Linfen basin is the most important fault basin in Shanxi fault zone,it provides important evidence for researching global change. The drilling rock core from the Guo Jianzhuang section was analyzed for determination of magnetization rate and grain degrees,and compared with other typical profile. The result showed that deposition environment of Linfen basin in Mid- late Pleistocene was that the upper layer belongs to loess deposition and lower layer belongs to river- lake phase deposition. The climate in whole Linfen basin experienced four cycles of warm wet- cold. Magnetization rate and grain showed changes with depth and different deposition environments,and appeared different climate phenomenon compared with paleo climatic proxies from Xifeng section.

关 键 词：临汾盆地 中更新世 沉积环境 气候变化 

分 类 号：P534.63[天文地球—第四纪地质学]