干旱区生态环境知识资源中心(Arid): 靖边黄土剖面记录的末次冰期以来的气候变化

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	靖边黄土剖面记录的末次冰期以来的气候变化
其他题名	Climate change since the last glacial stage recorded in Jingbian loess section
	王攀 1; 张培新 2; 杨振京 1; 石迎春 1; 宋超 1; 郭娇 1
来源期刊	海洋地质与第四纪地质
ISSN	0256-1492
出版年	2019
卷号	39 期号:3 页码:162-170
中文摘要	靖边黄土剖面位于黄土-沙漠的过渡区,能更加敏感地记录第四纪东亚季风气候变化。对位于靖边县南15km的三道沟黄土剖面(0~7.2m)进行年代学、磁化率、粒度、元素地球化学分析,粒度数据显示靖边黄土剖面沉积物以粉砂为主,占比高达80%以上;年龄曲线显示靖边黄土剖面存在千年尺度的沉积间断;元素地球化学数据表明,古土壤向黄土层中的元素迁移顺序为Ca>Na>Mg>Si>Al>K>Fe,剖面黄土处于初级风化阶段;多指标综合分析表明,靖边黄土剖面末次冰期以来的气候变化经历了MIS3气候相对温暖湿润且震荡激烈、末次冰盛期气候极度冷干、冰消期气候好转和全新世气候温暖湿润4个阶段。
英文摘要	The Jingbian loess section is located in the transition zone between the loess plateau and desert,which is more sensitive than others to the Quaternary East Asian monsoon climate changes.The analyses of chronology,susceptibility,grain size and geochemical elements of the loess section in the south of Jingbian county were carried out.The Jingbian loess is a kind of eolian deposits composed of more than 80%of silty sand.Dating age suggests that there is a millennial scale sedimentary discontinuity in the section.The chemical data shows that the loess is in a primary weathering stage and the element abundance is in an order of Ca>Na>Mg>Si>Al>K>Fe.The comprehensive multi-index analyses suggest that the loess section has suffered four stages of climatic changes since the Last Glacial Period.The MIS3 was relatively warm,humid and oscillated.The Last Glacial Maximum was extremely cold and dry.The Last Deglaciation was under an improving climate condition and the Holocene warm and humid.
中文关键词	磁化率 ; 粒度 ; 元素 ; 气候变化 ; 靖边黄土
英文关键词	susceptibility grain size element climate change Jingbian loess
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:6503402
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239255
作者单位	1.中国地质科学院水文地质环境地质研究所, 石家庄, 河北 050061, 中国; 2.中国地质科学院水文地质环境地质研究所;;中国矿业大学(北京), ;;, 石家庄;;, ;;北京 050061;;100083
推荐引用方式 GB/T 7714	王攀,张培新,杨振京,等. 靖边黄土剖面记录的末次冰期以来的气候变化[J],2019,39(3):162-170.
APA	王攀,张培新,杨振京,石迎春,宋超,&郭娇.(2019).靖边黄土剖面记录的末次冰期以来的气候变化.海洋地质与第四纪地质,39(3),162-170.
MLA	王攀,et al."靖边黄土剖面记录的末次冰期以来的气候变化".海洋地质与第四纪地质 39.3(2019):162-170.