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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

杨震, 古力巴哈尔·阿布都热西提, 木合塔尔·扎日, 舍建忠

杨震, 古力巴哈尔·阿布都热西提, 木合塔尔·扎日, 等. 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, 48(2): 104-111.
引用本文: 杨震, 古力巴哈尔·阿布都热西提, 木合塔尔·扎日, 等. 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, 48(2): 104-111.
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YANG Zhen, GULIBAHAER Abudurexiti, MUHETAER Zari, et al. Geochemistry Characteristics and Tectonic Significance of the Igneous Rocks from the Eastern Tianshan Mountains[J]. Northwestern Geology, 2015, 48(2): 104-111.
Citation: YANG Zhen, GULIBAHAER Abudurexiti, MUHETAER Zari, et al. Geochemistry Characteristics and Tectonic Significance of the Igneous Rocks from the Eastern Tianshan Mountains[J]. Northwestern Geology, 2015, 48(2): 104-111.
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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

  • 1.

    新疆地矿局第十一地质大队, 新疆 昌吉 831100

  • 2.

    新疆维吾尔自治区煤田地质局综合地质勘查队, 新疆 乌鲁木齐 830009

  • 3.

    新疆大学地质与矿业工程学院, 新疆 乌鲁木齐 830046

  • 4.

    新疆维吾尔自治区地质调查院, 新疆 乌鲁木齐 830011

Geochemistry Characteristics and Tectonic Significance of the Igneous Rocks from the Eastern Tianshan Mountains

  • 1.

    No.11 Geological party, BGMRED of Xinjiang, Changji 831100, Xinjiang, China

  • 2.

    Comprehensive Geological Exploration Team Coalfield Geology Bureau of Xinjiang Province, Urumqi 830009, Xinjiang, China

  • 3.

    College of Geology and Mining Engineering, Xinjiang University, Urumqi 830046, Xinjiang, China

  • 4.

    Geological Research Academe of Xinjiang, Urumqi 830011, Xinjiang, China

摘要

    摘要
  • 摘要: 通过对东天山觉罗塔格一带晚古生代岩浆岩地质特征、岩石化学特征等系统研究, 认为该晚古生代岩浆岩主要由早石炭世至中二叠世的火山岩和侵入岩组成, 其形成与康古尔洋向北俯冲有关。早石炭世岩浆岩为康古尔洋初始俯冲而成的钙碱性岛弧火山岩及具有低压、低温特征的高钾钙碱性I型花岗岩;晚石炭世岩浆岩为后碰撞弧火山岩;早二叠世岩浆岩为具有后碰撞弧和板内双重特征的火山岩及高温、高压特征的I型花岗岩;中二叠世发育具有低压、高温特征的高钾钙碱性A型花岗岩。综合前人资料及本文研究成果, 初步认为觉罗塔格一带晚古生代经历了俯冲碰撞—碰撞造山—造山后陆内伸展的构造演化过程。
    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 pressure. 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, and I-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 temperature 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-orogenic intracontinental extension in late Paleozoic.
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出版历程
  • 收稿日期:  2014-12-02
  • 修回日期:  2015-04-06
  • 发布日期:  2015-06-04

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