新疆西准石炭纪双构造层的确定及地质意义  

DETERMINATION AND ITS SIGNIFICANCE OF CARBONIFEROUS DOUBLE STRUCTURAL LAYER IN WEST JUNGGAR,XINJIANG

作　　者：庞振甲[1,2] 李永军[2] 王晓刚[3] 王军年[3] 张洪伟[3] 

机构地区：[1]西北有色地质研究院,陕西西安710054 [2]长安大学地球科学与资源学院,陕西西安710054 [3]新疆维吾尔自治区地质矿产勘查开发局第七地质大队,新疆乌苏833000

出　　处：《甘肃地质》2011年第3期13-17,共5页Gansu Geology

基　　金：国家自然科学基金项目(40534020);新疆维吾尔自治区地质矿产调查项目(XJQDZ2003-24)资助

摘　　要：早石炭世构造层次(C1)的地层发生了强烈的挤压变形,有较为紧闭的背、向斜构造和复杂的层间褶曲发育,局部见尖棱状褶曲。晚石炭世构造层(C2)包括上石炭统希贝库拉斯组、太勒古拉组地层挤压变形比较弱,形成比较宽缓的褶皱。二者间明显分属不同的构造变形层次,反映了早石炭世末研究区曾发生过一次重大的运动,这一结论,不仅澄清了多年来争论不休的包古图组和希贝库拉斯组的新老问题,也为研究西准噶尔构造演化提供了最新的信息,具有重要意义。The stratum of Early Carboniferous structural level（C1） occurred strongly compressive deformation,there are closed anticline and syncline and complexity inter-layer fold,in addition,the sharp edges-like fold exist locally.Late Carboniferous structural layer（C2） includes the Upper Carboniferous Xibeikulasi Formation and Tailegula Formation.Obviously the two formations belong to different tectonic deformation levels,which represent the extension of a major movement at the end of Early Carboniferous.It has great significance for clarifying the sequence relationship between Xibeikulasi Formation and Tailegula Formation which have debated for many years,also providing the latest information to study the tectonic evolution of West Junggar.

关 键 词：双构造层 地质意义 石炭纪 西准噶尔 新疆 

分 类 号：P547[天文地球—构造地质学]