新疆西天山巴音布鲁克组火山岩地质特征及构造意义  

THE IGNEOUS ROCK PETROCHEMISTY CHARACTER OF BAYINBULUKE FORMATION IN THE WESTERN TIANSHAN,XINJIANG AND THE GEOLOGICAL IMPLICATION

作　　者：朱志新[1] 王克卓[2] 李锦轶[1] 王新昆[3] 郭利[2] 张超[2] 宋杨[3] 

机构地区：[1]中国地质科学院地质研究所,北京100037 [2]新疆维吾尔自治区地质矿产勘探开发局第一区域地质调查大队,新疆乌鲁木齐830011 [3]中国地质大学,北京100083

出　　处：《新疆地质》2006年第1期9-12,共4页Xinjiang Geology

摘　　要：巴音布鲁克组主要分布于新疆西天山那拉提一带,构造上位于伊犁盆地南缘活动带,岩性主要为一套糜棱岩化、碎裂岩化中基性火山岩、正常沉积碎屑岩夹灰岩.火山岩岩石组合以碱性玄武岩-粗安岩-碱性流纹岩为主.岩石化学、地球化学特征表明,该组火山岩属碱性玄武岩系列大西洋型(钠质类型),具洋岛特征.说明当时的古南天山洋已拉张到相当规模.Bayinbuluke formation was been mostly distributed in Lanati of western tianshan, The tectonic location at the Paleozoic active continental margin of southern Yili basin. The rock assemblages of the Bayinbuluke formation are mainly alkaline basalt-thick andesite- alkaline rhyolite. It belong series of the alkaline basalt, and have character of island ocean in geochemistry and petrochemistry. It demonstrate that the southern tianshan ocean is very widest then.

关 键 词：西天山 巴音布鲁克组 火山岩 洋岛 

分 类 号：P588.14[天文地球—岩石学]