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地球科学进展  2009, Vol. 24 Issue (4): 420-427    DOI: 10.11867/j.issn.1001-8166.2009.04.0420
研究论文     
西天山伊宁地块主褶皱幕鄯善运动的确立及地质意义
李永军1,杨高学1,张天继1,栾新东2,王晓刚2
1.长安大学地球科学与资源学院,陕西 西安 710054;
2.新疆维吾尔族自治区地质矿产勘查开发局第九地质大队,新疆 乌鲁木齐 830000
Definition of the Major Fold Episode Shanshan Movement in Yining Massif, Western Tianshan Mountains,and Its Geological Significance
Li Yongjun1,Yang Gaoxue1,Zhang Tianji1,Luan Xindong2,Wang Xiaogang2
1.Earth Science Resources College of Chang′an University,Xi′an 710054,China;
2.No.9 Geological Party,BGMERD of Xinjiang,Urumqi 830000,China
 全文: PDF(2491 KB)  
摘要:

地层不整合接触是研究地质发展历史及鉴定地壳运动特征和运动时期的重要依据,主褶皱幕是一造山带多幕构造运动中起决定性作用和最为重要的一次构造运动。天山的构造运动幕次多且因地而异,前人认识多有分歧,也没有确立主褶皱幕。伊宁地块伊什基里克山一带上、下石炭统之间为角度不整合接触关系,在岩石组合、沉积环境、古生物地理区系、构造样式、区域大地构造背景等方面差异最为显著,凸显了鄯善运动对区内构造格架和盆山演化起到决定性的作用,因而是主褶皱幕。鄯善运动记录了西天山沟—弧—盆格局消亡,天山残余小洋盆终结,塔里木板块和准噶尔板块最终拼合在一起,形成了统一大陆的重要演化信息。

关键词: 主褶皱幕鄯善运动地质意义伊宁地块西天山    
Abstract:

       The unconformity contact of stratum is an important basis in the study of geologic history and the judge of the characters and the date of crustal movement. The major fold episode is one of the decisive role played and the most important tectonic movement in orogenic belt. The fold episode is different in Tianshan areas with different understanding by seientists. As a result, the major fold episode is not established  in this area. This is the angle-unconformity contact of stratum between the early and later Carboniferous in the Yishijilike area, Western Tianshan Mountains. They are obviously different by rock assemblage, depositional environment, geographical area of paleontology,tectonic style, regional tectonic setting, etc. The tectonic framework, basin-mountain evolution have played a decisive role by Shanshan movement, which is the major fold episode. Shanshan movement records the important evolutional information of the died-out of the trench-island arc-basin system, the end of Tianshan residual small ocean basin, and the Tarim plate and Junggar plate combining together to form a unified continent

Key words: major fold episode    Shanshan movement    geological signifincence    Yining massif    Western Tianshan.
收稿日期: 2008-10-29 出版日期: 2009-04-10
:  P542+.2  
基金资助:

国家自然科学基金项目“小岩体镍铜铂族岩浆硫化物矿床成矿的深部过程”(编号:40534020);维吾尔自治区地质矿产调查项目“新疆巩留特克斯达坂一带1∶5万地域地质矿产调查” (编号:XJQDZ2004-12)资助.

通讯作者: 李永军     E-mail: yongjunl@chd.edu.cn
作者简介: 李永军(1961-),男,甘肃天水人,教授,博导,主要从事区域地质调查研究工作. E-mail:yongjunl@chd.edu.cn
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引用本文:

李永军,杨高学,张天继,栾新东,王晓刚. 西天山伊宁地块主褶皱幕鄯善运动的确立及地质意义[J]. 地球科学进展, 2009, 24(4): 420-427.

Li Yongjun,Yang Gaoxue,Zhang Tianji,Luan Xindong,Wang Xiaogang. Definition of the Major Fold Episode Shanshan Movement in Yining Massif, Western Tianshan Mountains,and Its Geological Significance. Advances in Earth Science, 2009, 24(4): 420-427.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2009.04.0420        http://www.adearth.ac.cn/CN/Y2009/V24/I4/420

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