中国大陆科学钻探主孔高钛与低钛榴辉岩地球化学特征对比及其对金红石成矿的指示意义

邱检生 王汝成 蒋少涌 胡建 张晓琳 倪培. 中国大陆科学钻探主孔高钛与低钛榴辉岩地球化学特征对比及其对金红石成矿的指示意义[J]. 岩石学报, 2006, 22(7): 1875-1882.
引用本文: 邱检生 王汝成 蒋少涌 胡建 张晓琳 倪培. 中国大陆科学钻探主孔高钛与低钛榴辉岩地球化学特征对比及其对金红石成矿的指示意义[J]. 岩石学报, 2006, 22(7): 1875-1882.
QIU JianSheng, WANG RuCheng, JIANG ShaoYong, HU Jian, ZHANG XiaoLin , NI Pei. Geochemical comparison between high-Ti and Iow-Ti edogites from the main hole of the Chinese Continental Scientific Drill Project and its implications for rutile mineralization[J]. Acta Petrologica Sinica, 2006, 22(7): 1875-1882.
Citation: QIU JianSheng, WANG RuCheng, JIANG ShaoYong, HU Jian, ZHANG XiaoLin , NI Pei. Geochemical comparison between high-Ti and Iow-Ti edogites from the main hole of the Chinese Continental Scientific Drill Project and its implications for rutile mineralization[J]. Acta Petrologica Sinica, 2006, 22(7): 1875-1882.

中国大陆科学钻探主孔高钛与低钛榴辉岩地球化学特征对比及其对金红石成矿的指示意义

  • 基金项目:

    本项研究得到国家重点基础研究发展规划项目(2003CB716507)、国家创新研究群体科学基金项目(40221301)和教育部新世纪优秀人才支持计划项目(NCET-04-0459)的联合资助.致谢 感谢中国地质大学(武汉)刘勇胜教授对本文提出的建设性修改意见.

Geochemical comparison between high-Ti and Iow-Ti edogites from the main hole of the Chinese Continental Scientific Drill Project and its implications for rutile mineralization

  • 榴辉岩型金红石矿床是我国原生金红石矿床的最重要类型。本文以中国大陆科学钻探主孔0~2000m范围内揭露的榴辉岩为对象,通过对榴辉岩中TiO2与其它元素协变关系的全面分析,同时结合我国原生榴辉岩型金红石矿床TiO2的平均品位,将榴辉岩区分为高钛榴辉岩(TiO2〉2%)和低钛榴辉岩(TiO2〈2%),并据此系统对比了二类榴辉岩地球化学组成的差异。研究结果表明,高钛榴辉岩相对贫硅、贫钾、富铁,Al2O3/TiO2比值和全碱(K2O+Na2O)含量总体偏低,Cs、Rb、Ba等大离子亲石元素和Zr、Hf等高场强元素不同程度亏损,而放射性元素Th、U则相对富集,并总体具有较低的轻重稀土比值。榴辉岩型金红石矿床的形成主要受原岩因素制约,原岩的源区组成、产出环境、起源深度、部分熔融程度和随后的结晶分异过程对Ti的初始富集均具重要影响,富钛基性原岩是榴辉岩型金红石矿床形成的物质基础,高压区域变质作用是这类矿床形成的必要条件。
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出版历程
收稿日期:  2006-03-20
修回日期:  2006-06-12
刊出日期:  2006-07-31

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