干旱区生态环境知识资源中心(Arid): 萨拉乌苏地区末次冰期酒坊台剖面光释光年代及其环境意义

Arid

	萨拉乌苏地区末次冰期酒坊台剖面光释光年代及其环境意义
其他题名	OSL Chronology and Palaeoenvironment Implications of Jiufangtai Section from the Salawusu Area during the Last Glaciation
	刘凯 1; 赖忠平 1; 樊启顺 1; 李保生 2
来源期刊	盐湖研究
ISSN	1008-858X
出版年	2010
卷号	18 期号:3 页码:1-8
中文摘要	萨拉乌苏地区位于毛乌素沙漠东南部,属于东亚季风的北部边缘区.由于萨拉乌苏地区还拥有我国非常重要的旧石器考古遗址,该地区的气候变化广受国内外学者的关注.通过野外考察发现,在萨拉乌苏河谷酒坊台地区的上部地层中,广泛沉积有两层湖相沉积物.在米浪沟湾选择剖面,共采集了8个光释光样品,以此来恢复湖泊发育的年代及环境变化.根据地层沉积相对比和年代学结果,得出在约4030 ka毛乌素沙漠东南边缘地区发育有古湖泊,说明当时的有效湿度较高.通过区域对比,发现毛乌素沙漠和其他亚洲季风区在氧同位素3阶段(MIS3)晚期都有古湖形成或高湖面记录,说明这些湖泊的演化过程存在一定的等时性,反映当时亚洲夏季风的增强及有效湿度的增加
英文摘要	The Salawusu area is located in the southeast margin of the Mu Us Desert, which actually belongs to the northern margin area of the East Asian Monsoon. The Salawusu area is also a key Paleolithic site in northeastern Asia. Based on field observation, the anthors found there existed widely two layers of lacustrine sediments in the upper part of Jiufangtai sedimentary sequence in Salawusu valley. In order to date the age of the palaeolake and to reconstruct the climate changes, luminescence samples were collected from one sedimentary section. Based on stratigraphical and chronological studies, the authors conclude that there existed a palaeolake in the southeast margin of the Mu Us Desert during the period between ~40 ka and ~30 ka, suggesting relatively high effective moisture. Comparison with other climatic records in adjacent areas suggests that the lake evolution occurred nearly contemporaneous in the Mu Us Desert and other neighboring Asian monsoon areas during the later phase of marine oxygen isotope stage 3, suggesting increased Asian summer monsoon intensity
中文关键词	萨拉乌苏 ; 末次冰期 ; 光释光测年 ; 环境变化
英文关键词	Salawusu Last glaciation Optically stimulated luminescence(OSL) dating Environmental change
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:4032075
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225832
作者单位	1.中国科学院青海盐湖研究所, 西宁, 青海 810008, 中国; 2.华南师范大学地理系, 广州, 广东 510631, 中国
推荐引用方式 GB/T 7714	刘凯,赖忠平,樊启顺,等. 萨拉乌苏地区末次冰期酒坊台剖面光释光年代及其环境意义[J]. 中国科学院西北生态环境资源研究院,2010,18(3):1-8.
APA	刘凯,赖忠平,樊启顺,&李保生.(2010).萨拉乌苏地区末次冰期酒坊台剖面光释光年代及其环境意义.盐湖研究,18(3),1-8.
MLA	刘凯,et al."萨拉乌苏地区末次冰期酒坊台剖面光释光年代及其环境意义".盐湖研究 18.3(2010):1-8.