摘要
塔里木盆地东北缘构造带包括了新疆东天山及甘肃—内蒙北山广大地区。本区早古生代塔里木板块与哈萨克斯坦板块的对接带展布于由西段阿其克库都克断裂带向东与石板井—小黄山蛇绿混杂岩一线。晋宁运动(800 Ma)本区经历了广泛的岩浆热事件,西伯利亚板块、哈萨克斯坦板块与塔里木板块曾一度合并到罗迪尼亚超大陆之上。南华—震旦纪古大陆解体,哈萨克斯坦板块及塔里木板块块断区以多岛群体弥散于古亚洲洋内。塔里木板块东段的陆缘区,震旦—寒武纪显示海湾型沉积区。奥陶纪沿花牛山—五峰山—帐房山一线裂解为裂谷带,晚奥陶世末前碰撞期岩浆活动导致裂谷关闭。早、中志留世,古亚洲洋洋壳板片沿着尾亚南—芨芨台子山—白云山—月牙山—洗肠井一线向南俯冲,构筑了公婆泉火山岛弧带及相匹配的红柳河—牛圈子—碱泉子弧后盆地。晚志留世的碰撞初期花岗岩浆运动极为活跃。泥盆纪进入主碰撞期,造山阶段的岩浆热事件波及到隆升中的造山带,在其南缘沉陷为火山-磨拉石前陆盆地。
The tectonic belt in the northeast margin of Tarim Basin is composed of Tianshan area of Xinjiang and most Beishan area of Gansu-Inner Mongolia border.The collision zone between Early Paleozoic Tarim Plate and Kazakhstan Plate extends from Aqikekuduke fracture zone eastwards to Sihbanjing-Xiaohuangshan ophiolite complex.The region experienced extensive magmatic events during Jinning Movement（800 Ma）,and Siberian Plate,Kazakhstan and Tarim Plate once collided and connected with each other over Rodinia super-continent.The pieces broken by paleo-continent of Nanhua-Sinian period,block faulted area of Kazakhsta and Tarim Plate were dispersed into the paleo-Asian Ocean in the form of a multi-island group.The peri-continental area had features of bay sedimentary area in Sinian-Cambrian period,and was broken into a rift zone along Huaniushan-Wufengshan-Zhangfangshan line in late Ordovician period.The crust plate of paleo-Asian ocean subducted southwards along the Weinanya-Jijitaizishan-Baiyunshan-Yueyashan-Xichangjing line,forming Gongpoquan island-arc zone and arc-rear basin of Hongliuhe-Niujuanzi-Jianquanzi line.In late Silurian,granitc magmatic activities were active at the beginning stage of collision.Devonian period saw the main collision stage,during which the magmatic thermal event affected the rising orogenic belt,and the volcanic-mollasse foreland basin was formed in the south margin of Tarim Basin.
出处
《中国地质》
CAS
CSCD
北大核心
2011年第4期945-960,共16页
Geology in China
基金
中石化"塔里木盆地盆山动力学及油气资源战略"项目(YPH081110)
国土资源部"青藏高原大陆动力学与成矿作用"项目(212010818094)资助
