西北地质Issue(2)：104-111,8.
东天山觉罗塔格一带晚古生代岩浆岩地球化学特征及构造意义
Geochemistry Characteristics and Tectonic Significance of the Igneous Rocks from the Eastern Tianshan Mountains
摘要
Abstract
This paper systematically summarized the geochemical characteristics of late Paleozoic igneous rocks in the Jueluotage area of Eastern Tianshan.The igneous rockis mainly formed by early Carboniferous to middle Permian volcanic and intrusive rocks,and its formation is relevant with the northward subduction of Kangguer ocean.The igneous rock of early Carboniferous is composed of calc-alkaline island arc volcanics formed in the initial stage of slab subduction and high-potassium calc-alkalineI-type granite with a characteristic of low temperature and low pres-sure.The igneous rock of late Carboniferous is post-collision arc volcanics.The igneous rock of early Permian is composed of the volcanic in the post-collision arc and intraplate environment,andI-type granite with a characteristic of high temperature and high pressure.The igneous rock of middle Permian is high-potassium calc-alkaline A-type granite with characteristics of high temper-ature and low pressure.The results of previous studies and this paper suggest that this region experienced a tectonic evolution from subduction-collision to collision-orogenesis and post-orogen-ic intracontinental extension in late Paleozoic.关键词
晚古生代/岩浆岩/地球化学Key words
late Paleozoic/igneous rock/geochemistry分类
天文与地球科学引用本文复制引用
杨震,古力巴哈尔·阿布都热西提,木合塔尔·扎日,舍建忠..东天山觉罗塔格一带晚古生代岩浆岩地球化学特征及构造意义[J].西北地质,2015,(2):104-111,8.基金项目
新疆1∶5万区域地质矿产调查项目管理办公室“塔里木板块北缘与古亚洲洋南缘晚古生代构造关系研究”(40862006) （40862006）
