摘要
显生宙初，新疆曾是一个统一的陆块。寒武纪晚期开始解体，在新疆东、北部形成斋桑－东准噶尔、康古尔两个洋盆，博格达－哈尔力克、北山两个裂谷系和１２条深、大断裂带。从加里东中晚期开始，两个洋盆边拉张达消减，形成３条俯冲带、２个对接带和７个岛弧带，最后于华力西中期沿克拉表里、康古尔塔格两个对接带闭合。以对接带、俯冲带和深断裂带为界，将东疆及其邻区划分为西伯利亚、准噶尔和塔里木三大板块，１０个次级构造单元。华力西晚期两个裂谷闭合后，中上部地壳强烈水平挤压，产生一系列逆冲－推覆构造等碰撞期后极内构造效应。
The continental block of Xinjiang and its adjacent areas was broken up in the late Cambriantime.Zaisan-east Junggar and Kangguer OCeanic basins, Bogda-Harlik and North Mount riftS,andtwelve deep fault 'zones were formed in the north and east Xinjiang. Since the middle and late Caledonian, the two basins beg3n opening and closins,and three subduction zones, two collision zones andseven island arc belts were formed. At last, the two collision zones were closed up along Karameili andKangguertag in middle Variscan. The eastern Xinjiang and its adjacent areas were divided into three paleoplates and ten secondary tectonic elementS, bounded by the colliSion zones, subduction zones anddeep fault zones. After the closins of the two riftS in the late Variscan,the crust was compressed strongly and the tectonic effect within the plate occurred after a series of thrust-nappe structures collided.
出处
《成都理工学院学报》
CSCD
1994年第4期1-10,共10页
Journal of Chengdu University of Technology
关键词
板块构造
陆块
洋盆
构造演化
新疆
continental block, oceanic basin, rift, subduction zone, collision zone, island arc belt,plate, thrust-nappe structure
