| 阿尔金造山带中、新生代的演化 |
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| 关键词:Altun orogenic belt Tarim basin Dunhuang basin Qaidam basin strike-slip fault |
| 基金项目:中国石油天然气集团公司创建新基金项目(编号:2002F70108) |
| 作者 | 单位 | | 黄立功 | 中国科学院广州地球化学研究所,广东广州,520000
青海油田公司,甘肃敦煌,733202 | | 钟建华 | 中国科学院广州地球化学研究所,广东广州,520000
石油大学（华东）地球资源与信息学院,山东东营,257061 | | 郭泽清 | 石油大学（华东）地球资源与信息学院,山东东营,257061 | | 刘云田 | 中国科学院广州地球化学研究所,广东广州,520000
青海油田公司,甘肃敦煌,733202 | | 江波 | 青海油田公司,甘肃敦煌,733202 | | 管全俊 | 青海油田公司,甘肃敦煌,733202 | | 柳祖汉 | 湘潭工学院图书馆,湖南湘潭,411201 | | 张跃中 | 青海油田公司,甘肃敦煌,733202 | | 张永庶 | 青海油田公司,甘肃敦煌,733202 | | 李勇 | 石油大学（华东）地球资源与信息学院,山东东营,257061 |
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| Evolution of the Altun Orogenic Belt in the Mesozoic and Cenozoic |
| The Altun orogenic belt on the eastern edge of Tarim basin experienced a complex geotectonic evolution in the Mesozoic and Cenozoic: uplifting and planation in early Mesozoic and collapsing and sedimentation in late Mesozoic. The eastward compression of Tarim Basin from Paleocene to Miocene resulted in the formation of a right-lateral slip obduction on the southeastern edge of the Altun orogenic belt and the subduction of Qaidam plate toward the Altun orogenic belt as well as the uplifting of this belt. Tarim basin migrated for a maximum distance of 400 to 500 km relative to Qaidam Basin, causing the disintegration of the originally integrated Tarim-Dunhuang-Qaidam Basin. The obduction strike-slip generated a series of small-sized strike-slip basins and a complex sedimentary formation accompanied by kinetic metamorphism and volcanism. The conversion of the east-west compression to a nonsymmetrical south-north couple-compression at the end of Miocene led to a structural reversion from right-lateral to left-lateral in the Altun orogenic belt and the disintegration of the integrated Tarim-Dunhuang basin. Tarim Basin drifted southward for more than 400 km. The eastward subduction of Tarim Basin caused drastic uplifting of the Altun orogenic belt. Besides, a series of small-sized basins were developed and a complex sedimentary formation was formed correspondingly in the Altun orogenic belt. |
| HUANG Li-gong,ZHONG Jian-hua,GUO Ze-qing,LIU Yun-tian,JIANG Bo,GUAN Quan-jun,LIU Zu-han,ZHANG Yue-zhong,ZHANG Yong-shu,LI Yong.2004.Evolution of the Altun Orogenic Belt in the Mesozoic and Cenozoic[J].Acta Geoscientica Sinica,25(3):287-294. |
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