新疆西天山达鲁巴依蛇绿岩地质特征  

THE GEOLOGICAL CHARACTER OF THE SINIAN DALUBAYI OPHIOLITE IN THE WEST TIANSHAN, XINJIANG

作　　者：杨海波[1] 高鹏[1] 李兵[1] 张勤军[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第二区域地质区调大队

出　　处：《新疆地质》2005年第2期123-126,共4页Xinjiang Geology

摘　　要：新疆西天山达鲁巴依达坂一带发现的震旦系蛇绿岩,位于塔里木板块北部大陆边缘与伊犁地块的缝合线上, 被命名为达鲁巴依蛇绿岩,呈残块状分布于那拉提南缘断裂南侧的构造混杂带中.培面出露较好,岩石化学、地球化学特征显示为大洋岛屿环境,是震旦纪晚期伊犁地块从塔里木板块裂解时的产物.The Sinian ophiolite is located in the Dulabayi saddle in the west Tianshan between the north Tarim edge and the Yili block. It is named the Dalulayi Ophiolite. It occurs in a complex structural belt south of Nalati fault. Rock geochemistry displays an ocean island environment during the late Sinian when the Yili block broke away from the Tarim plate.

关 键 词：新疆西天山 蛇绿岩 地质特征 塔里木板块 地球化学特征 伊犁地块 构造混杂带 大陆边缘 岩石化学 岛屿环境 震旦系 缝合线 震旦纪 南缘 剖面 大洋 

分 类 号：P588.3[天文地球—岩石学]