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华南印支期铝质A型花岗岩的判别、成因及构造环境

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沈滔, 陈正乐, 韩凤彬, 詹礼贵. 华南印支期铝质A型花岗岩的判别、成因及构造环境[J]. 华南地质, 2015, (2): 151-157. doi: 10.3969/j.issn.1007-3701.2015.02.004
引用本文: 沈滔, 陈正乐, 韩凤彬, 詹礼贵. 华南印支期铝质A型花岗岩的判别、成因及构造环境[J]. 华南地质, 2015, (2): 151-157. doi: 10.3969/j.issn.1007-3701.2015.02.004
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SHEN Tao, CHEN Zheng-Le, HAN Feng-Bin, ZHAN Li-Gui. Discrimination, Genesis and Tectonic Setting of In-dosinian Aluminum A-type Granite in South China[J]. South China Geology, 2015, (2): 151-157. doi: 10.3969/j.issn.1007-3701.2015.02.004
Citation: SHEN Tao, CHEN Zheng-Le, HAN Feng-Bin, ZHAN Li-Gui. Discrimination, Genesis and Tectonic Setting of In-dosinian Aluminum A-type Granite in South China[J]. South China Geology, 2015, (2): 151-157. doi: 10.3969/j.issn.1007-3701.2015.02.004
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华南印支期铝质A型花岗岩的判别、成因及构造环境

  • 东华理工大学地球科学学院,江西南昌,330013

  • 东华理工大学地球科学学院，江西南昌330013; 中国地质科学院地质力学研究所，北京100081

  • 中国地质科学院地质力学研究所,北京,100081

  • 东华理工大学地球科学学院,江西南昌,330013

  • 基金项目:

    中国地质调查局地质大调查项目

    国家专项“深部探测技术与实验研究”项目

Discrimination, Genesis and Tectonic Setting of In-dosinian Aluminum A-type Granite in South China

    摘要
  • 传统意义的A型花岗岩在化学成分上可分为碱性A型花岗岩(简称AAG)和铝质A型花岗岩(简称ALAG)两类, ALAG为A型花岗岩的一个亚类。随着华南地区花岗岩研究的不断深入,印支期铝质A型花岗岩越来越被关注。本文系统阐述了ALAG岩相学、矿物学、地球化学特征及其判别方式,分析了华南印支期ALAG的物质来源、成因及形成构造环境。发现其来源于华夏地块古老变质沉积岩不同程度的部分熔融,在其形成过程中有可能混染当时的基性地幔组分;构造环境主要受控于古太平洋板块的俯冲作用,形成于后造山阶段,但应也受到了印支地块与华南陆块的后碰撞过程的影响。
    The traditional meaning of the A-type granite on the chemical composition can be divided into alkaline A-type granite (AAG) and aluminum A-type granite (ALAG).Aluminum A-type granite (ALAG) belongs to a subtype of A-type granitoids. Along with the deep-going research of indosinian aluminum A-type granite in southern China, it is becoming more and more attention. The unique mineralogy feature and geochemical charac-teristics of ALAG is summarized to discuss the method for discriminate the ALAG from other type granitoid. It then analyzed material source, petrogenesis and tectonic settings of the Indosinian ALAG in South China. It is shown that indosinian aluminum A-type granite in southern China from different degree of partial melting of huaxia plot old metamorphic sedimentary rocks, possible contaminated the basic components of mantle in the pro-cess of its formation;tectonic setting is mainly controlled by the subduction of the ancient Pacific plate, formed at post orogenic stage, but should also be impact collision process for the indosinian block and South China conti-nental block.
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出版历程
刊出日期:  2015-06-25

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