北山-巴丹吉林地区石炭纪-二叠纪构造古地理及其演化  

Carboniferous-Permian Tectonic Paleogeography of Beishan-Badain Jaran Region and Its Evolution

作　　者：卜建军[1] 吴俊[1] 史冀忠[2] 杨文强[1] 张楗钰[1] Bu Jianjun;Wu Jun;Shi Jizhong;Yang Wenqiang;Zhang Jianyu(Wuhan Center of Geological Survey,CGS,Wuhan 430223,China;Xi′an Center of Geological Survey,CGS,Xi′an 710054,China)

机构地区：[1]中国地质调查局武汉地质调查中心,武汉430223 [2]中国地质调查局西安地质调查中心,西安710054

出　　处：《地质科技情报》2019年第6期113-120,共8页Geological Science and Technology Information

基　　金：国家自然科学基金项目(41472004)

摘　　要：通过对北山-巴丹吉林地区石炭纪-二叠纪的沉积、古生物、岩浆岩、混杂岩、火山岩等的调查研究,认为北山-巴丹吉林地区的构造古地理为由哈萨克斯坦板块、塔里木板块和华北板块3个板块和牛圈子洋(对应红柳河-牛圈子-洗肠井蛇绿混杂岩带)、恩格尔乌苏洋(对应恩格尔乌苏蛇绿混杂岩带)2个大洋并存的格局。哈萨克斯坦板块主要包括黑鹰山-马鬃山区;塔里木板块包括石板泉-杭乌拉区;华北板块主要包括乌力吉区。黑鹰山-马鬃山区的构造古地理为黑鹰山弧后盆地和马鬃山岛弧;石板泉-杭乌拉区的构造古地理为被动大陆边缘;乌力吉区的构造古地理为乌力吉北岛弧和乌力吉弧后盆地。通过分析各构造古地理单元的特征和演化过程,认为塔里木板块和哈萨克斯坦板块拼合时间为晚石炭世,塔里木板块与华北板块的拼合时间大致为晚二叠世。The tectonic paleogeographic background of Beishan-Badain Jaran area was analyzed by the investigating of the sediments, paleontology, magmatic rocks, melange and volcanic rocks of the Carboniferous-Permian. We assume that the tectonic paleogeography of this area is the conjunction of three plates(Kazakhstan Plate, Tarim Plate and North China plate) and two oceans(Niujuanzi oceans and Engeerwusu oceans).The Kazakhstan plate mainly includes Heiyingshan-Mazongshan area. Tarim Plate includes Shibanquan-Hangwula area and North China Plate includes mainly Wuliji area. Tectonic paleogeography of Heiyingshan-Mazongshan area belong to the Heiyingshan back-arc basin and the Mazongshan island arc, while tectonic paleogeography of Shibanquan-Hangwula area belong to the edge of the passive continental margin. Tectonic palaeogeography of Wuliji area belong to Wuliji back-arc basin and north of Wuliji Island arc. Analysis of characteristics and evolution process of each tectonic paleogeographic unit suggests that the final collision time of Tarim Plate and Kazakhstan Plate is Late Carboniferous, and that between Tarim plate and North China plate is roughly the Late Permian.

关 键 词：构造古地理 生物古地理 哈萨克斯坦板块 塔里木板块 华北板块 甘肃北山 巴丹吉林 

分 类 号：P547[天文地球—构造地质学] P548[天文地球—地质学]