干旱区生态环境知识资源中心(Arid): 36Cl断代法应用于青藏高原末次快速隆升的构造事件研究

Arid

	36Cl断代法应用于青藏高原末次快速隆升的构造事件研究
其他题名	Application of 36Cl-Dating to the Last Rapid Uplift of the Tibet Plateau
	任收麦 1; 葛肖虹 2; 杨振宇 1; 林源贤 3; 胡勇 4; 刘永江 2
ISSN	0001-5717
出版年	2006
卷号	80 期号:8 页码:1110-1117
中文摘要	青藏高原的形成与隆升是多期次的,尤其早更新世晚期的快速隆升对全球气候变化、我国西部盆-山地貌形成与荒漠化的出现有着重大影响,这已成为近年地学研究的热点问题.通过对高原东北缘-柴达木盆地西部地区角度不整合面上下地层中红色泥岩36Cl 断代法定年,首次测定该事件发生在早更新世晚期至中更新世(1.54～0.28 Ma B.P.)之间.结合敦煌盆地同时代地层(0.837 Ma B.P.和1.142 Ma B.P)的低角度掀斜现象,以及前人在塔里木盆地、柴达木盆地、吐鲁番-哈密盆地、酒西盆地的研究结果,认为早更新世晚期,受青藏高原快速隆升北向挤压作用的影响,我国西北地区发生了一次重要的构造事件,造成大范围的挤压变形与山脉隆升,这对我国西北地区构造格架的最终形成和晚期油气运移成藏具有重要意义.
英文摘要	The forming and uplifting of the Tibet Plateau are multi-stage, and, the last rapid uplift of the plateau plays especially an important role in global climate change, basin-mountain tectonic formation in wevStern China and appearance of desertification. It becomes a key scientific question recently. Based on field works, we recognized a high-angular unconformity well developed on the southern side of the Altun Mountain in the western Qaidam Basin. Pleistocene strata with slight dip outcrop on the northern side of the Altun Mountain in the southern Dunhuang Basin. Two groups of i6Cl dating samples were collected from mudstone lens of fluvial sediments in the upper and lower unconformity plane in Goukougou in the western Qaidam Basin, and slightly incline mudstone layer in the southern Dunhuang Basin. The samples yield ages of 1. 535 Ma in the downside layer and 0. 277 Ma in the upside layer of the unconformity in Goukougou, and 1. 142 Ma and 0. 837 Ma in the southern Duanhuang Basin. In accordance with previous research related to this tectonic event in the Tarim Basin, Turpan-Hami Basin, Western Jiuquan Basin and Qaidam Basin, we argue that an important geological event happened in northwestern China after the Early Pleistocene, which responds evidently to the last rapid compression and uplifting of the northern Tibetan Plateau. Therefore, it is significant to understand the formation of tectonic framework and the late period oil-gas reservoirs in northwestern China.
中文关键词	柴达木盆地 ; 早更新世 ; 36Cl断代法定年 ; 构造事件
英文关键词	Qaidam Basin Early Pleistocene 36Cl-dating geological event
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:2431609
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219583
作者单位	1.中国地质科学院地质力学研究所, 北京 100081, 中国; 2.吉林大学地球科学学院, 长春, 吉林 130061, 中国; 3.天津地质矿产研究所, 300170; 4.青海油田分公司勘探开发研究院, 敦煌, 甘肃 736202, 中国
推荐引用方式 GB/T 7714	任收麦,葛肖虹,杨振宇,等. 36Cl断代法应用于青藏高原末次快速隆升的构造事件研究[J],2006,80(8):1110-1117.
APA	任收麦,葛肖虹,杨振宇,林源贤,胡勇,&刘永江.(2006).36Cl断代法应用于青藏高原末次快速隆升的构造事件研究.,80(8),1110-1117.
MLA	任收麦,et al."36Cl断代法应用于青藏高原末次快速隆升的构造事件研究".80.8(2006):1110-1117.