作者：张进;李锦轶;朱志新;

机构：中国地震局地质研究所;中国地质科学院地质研究所;新疆资源环境中心;

中文关键词：天山;;乌孙山;;新生代;;造山带

英文关键词：Wusunshan;Tianshan;Cenozoic;Orogenic belt

中文摘要：中天山新生代晚期经历了自南天山向北的强烈构造挤压.在近NS向挤压环境下,伊犁盆地中部乌孙山崛起,整个盆地解体.南天山变形前锋主要位于乌孙山北缘断裂,该断裂为盆地中重要的活动断层,造成约16 km缩短量.目前伊犁盆地北部伊宁次级盆地受到来自乌孙山和北天山的挤压和逆冲,盆地范围逐渐减小.伊犁盆地南部的昭苏次级盆地已并入到南天山逆冲褶皱带中,构成一个背驮盆地,主体伊宁次级盆地则"俯冲"于两侧山体之下.

英文摘要：During the Late Cenozoic,the Central Tianshan Mountain had undergone strong tectonic event(s) from the direct northward compression of the Southern Tianshan Mountain.In this environment,the Wusunshan Mountain uplifted in the center of the Yili basin,which resulted in the dismemberment of the former basin.The deformation front of the southern Tianshan mountain is located along the northern Wusunshan mountain fault.This fault now is one important active fault in the Yili basin.About 16km shortening resulting from this thrust fault was obtained.Now the sub-Yining basin in the north of the Yili basin is undergoing combined compression from the Wusunshan Mountain to the south and northern Tianshan mountain to the north,the basin reduced gradually.The sub-Zhaosu basin to the south as one piggy-back basin is now incorporated into the thrust belt of the southern Tianshan mountain,and the sub-Yining basin to the north underthrusts the Wusunshan Mountain to the south and northern Tianshan mountain to the north.

[中文刊名]：新疆地质 [出版日期]：2009-06-15 [CN]：65-1092/P [ISSN]：1000-8845

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