新疆蛇绿岩就位机制  

OPHIOLITIC EMPLACEMENT MECHANISM OF XINJIANG

作　　者：梁云海[1] 李文铅[1] 李卫东[1] 李亚萍[1] 

机构地区：[1]新疆地质矿产勘查开发局第一区域地质调查大队,新疆乌鲁木齐830011

出　　处：《新疆地质》1999年第4期344-349,共6页Xinjiang Geology

摘　　要：蛇绿岩是古代大洋岩石圈的残片 ,但它并不代表正常的洋壳 ,也不能无条件的与现代大洋进行对比。因为蛇绿岩形成环境具有多样性 ,既可以形成于大洋 ,也可以形成于洋中脊、弧后盆地、弧前盆地、岛弧、被动大陆边缘或小洋盆等。蛇绿岩可以形成于多种构造环境 ,在就位机制上也应存在多样化 ,依据新疆实际 ,将蛇绿岩分为 5种就位机制即 :克拉麦里型 (特提斯型 )、特克斯型 (环太平洋型 )、阔克萨勒型 (底辟型 )、唐巴勒型 (过渡型 )、西昆仑仰冲型 (特罗多斯型 )Since the Penrose Congress helded in America in 1972,it is generally recognized that ophiolite is remains of the lithosphere of ocean,but it can not represent normal ocean crust or compare absolutely to present ocean .Because ophiolite is formed in the environment with diversity,it is not only ocean but also mid oceanic ridges,post arc basin ,fore arc basin,island arc,passive continental margin or micro ocean etc.Seeing that the emplacement mechanism of ophiolite includes many diffenent types.According to practice in Xinjiang,ophiolitic mechanism is divided into five types: Kelameili (Tethys),Tekesi(Circum Pacific),Kuokesale(Diapir),Tangbale(Transitional) and West Kunlun upthrust(Troodos).

关 键 词：新疆 蛇绿岩 就位机制 

分 类 号：P542.4[天文地球—构造地质学]