干旱区生态环境知识资源中心(Arid): MIS3晚期查格勒布鲁剖面微量元素揭示的千年尺度气候变化

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	MIS3晚期查格勒布鲁剖面微量元素揭示的千年尺度气候变化
其他题名	Millennial-scale climate changes during the late Mis3 revealed by trace element in Chagelebu Section
	牛东风 1; 李保生 2; 蒋树萍 1; 舒培仙 1; 郭亿华 3; 杨艺 1; 温小浩 1
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2015
卷号	38 期号:4 页码:719-727
中文摘要	通过对巴丹吉林查格勒布鲁剖面时代上属MIS3晚期的地层层位(CGS3a层段)中14种微量元素的分析发现:除Co、Ba含量呈相反变化外,P、V、Cr、Mn、Ni、Zn、Pb、Y、Zr、Nb、Cu和As含量在风成沙丘砂中基本上表现为谷值,而在不同层位沙丘砂上覆的湖相中则相对为峰,构成与沉积旋回相应的元素变化旋回。元素在沙丘砂中呈现的谷值,主要揭示了干冷气候条件下东亚冬季风的侵蚀、搬运和堆积作用;在湖相中的相对富集,则与东亚夏季风盛行时暖湿气候背景下该地所处的特殊洼地地貌位置有关。元素旋回实际上代表的是东亚冬夏季风的气候变化旋回。分析结果显示:MIS3晚期剖面所在地至少经历了5次冬夏季风交替变化的气候旋回,反映了该时期我国沙漠地区的千年尺度气候变化。
英文摘要	Based on the analysis of 14 trace chemical elements from the CGS3a segment that corresponds to the MIS3 in the Chagelebu section of the Badain Jaran Desert,Inner Mongolia,China,the paper found that the contents of different trace elements vary,and even greatly. Their distribution and average values are as follows:P, ranging from 21510~(-6) to 84410~(-6)(average 48010~(-6));V,3510~(-6)-10010~(-6)(69.510~(-6));Cr,5010~(-6)-10210~(-6) (72.110~(-6));Mn,21410~(-6)-1 79410~(-6)(61610~(-6));Co 12.410~(-6)-23.810~(-6)(16.610~(-6));Cu,7.210~(-6)-47.510~(-6)(22.710~(-6));Ni,28.210~(-6)-53.510~(-6)(39.810~(-6));Zn,20.610~(-6)-101.710~(-6)(56.710~(-6));Pb,910~(-6)-2910~(-6) (18.310~(-6));As,010~(-6)-13.310~(-6)(2.710~(-6));Y,11.610~(-6)-29.610~(-6)(20.210~(-6));Zr,8810~(-6)-23010~(-6)(144.710~(-6));Nb 3.210~(-6)-11.410~(-6)(7.410~(-6));Ba,45710~(-6)-68910~(-6)(571.410~(-6)),respectively. The trace elements display obvious regulations in different sedimentary facies,the contents of P,V,Cr,Mn,Ni,Zn,Pb,Y,Zr,Nb, Cu and As are lower in the dune sands,but higher in the lacustrine facies;while the contents of Co and Ba show opposite trend:higher in the dune sands,and lower in the lacustrine facies. The lower values of the trace elements in the dune sands mainly indicate the effect of erosion,transportation and accumulation of East Asia winter monsoon under the cold-dry climate condition;whereas,the enrichment in the lacustrine facie is related to the specially low-lying location under the warm-humid climate background of East Asia summer monsoon. Therefore,the paper suggests that the trace elements cycles actually represent the climate cycles in the alternations between the East Asia winter and summer monsoons. The CGS3a segment has experienced at least 5 climate cycles of alternation in the East Asia winter and summer monsoons,which reveals that there exist millennium-scale climate changes in the overall warm-humid climate during the Late MIS3 period.
中文关键词	MIS3晚期 ; 查格勒布鲁剖面 ; 微量元素 ; 千年尺度气候变化
英文关键词	Late MIS3 Chagelebulu section trace elements millennium-scale climate variation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5490922
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232666
作者单位	1.华南师范大学地理科学学院, 广州, 广东 510631, 中国; 2.华南师范大学地理科学学院, 黄土与第四纪地质国家重点实验室, 广州, 广东 510631, 中国; 3.广州地理研究所, 广州, 广东 510070, 中国
推荐引用方式 GB/T 7714	牛东风,李保生,蒋树萍,等. MIS3晚期查格勒布鲁剖面微量元素揭示的千年尺度气候变化[J],2015,38(4):719-727.
APA	牛东风.,李保生.,蒋树萍.,舒培仙.,郭亿华.,...&温小浩.(2015).MIS3晚期查格勒布鲁剖面微量元素揭示的千年尺度气候变化.干旱区地理,38(4),719-727.
MLA	牛东风,et al."MIS3晚期查格勒布鲁剖面微量元素揭示的千年尺度气候变化".干旱区地理 38.4(2015):719-727.