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J4 ›› 2010, Vol. 16 ›› Issue (3): 265-280.

• 矿物·岩石·地球化学 •    下一篇

苏北超高压变质带榴辉岩的对比性研究及成矿作用

 黄建平, 马东升, 刘聪, 王辉   

  1. 1.内生金属矿床成矿机制研究国家重点实验室(南京大学),南京  210093;
    2. 江苏省地质调查研究院,南京  210018;3. 江苏省国土资源厅,南京  210029
  • 收稿日期:2010-03-15 修回日期:2010-07-18 出版日期:2010-09-20 发布日期:2010-09-20
  • 作者简介:黄建平,1963年生,男,在职博士研究生,研究员级高级工程师,从事矿产地质勘查与研究;E-mail:hjp66666@126.com
  • 基金资助:

      国家攀登计划预选项目(95-预-93);国家地质大调查项目(200210300004)

Geology, Geochemistry and Mineralization of Eclogites in Ultrahigh-Pressure
Metamorphic Belt in the Northern Jiangsu Province

 HUANG Jian-Ping, MA Dong-Sheng, LIU Cong, WANG Hui   

  1. 1. National Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing  210093, China;  2. Geological Survey of Jiangsu
    Province, Nanjing  210018, China; 3. Jiangsu Department of Land & Mineral Resources, Nanjing 210029, China;
  • Received:2010-03-15 Revised:2010-07-18 Online:2010-09-20 Published:2010-09-20

摘要:

苏北超高压变质带是秦岭—大别造山带的东延部分,所产出的榴辉岩有三种类型,分别为产于片麻岩中的G类榴辉
岩、产于大理岩中的M类榴辉岩和产于蛇纹岩中P类榴辉岩。地球化学研究表明,三类榴辉岩的原岩复杂多样,源岩为下地
壳或上地幔的基性-超基性岩,兼具大陆和大洋玄武岩的特征,富含TiO2等有用组分,是金红石矿床的成矿母岩。金红石矿
床的形成是华北、扬子两大板块俯冲碰撞的结果,金红石成矿作用的强弱与岩性、构造、变质变形作用等密切相关。榴辉
岩中含有金红石、钛铁矿、磷灰石、石榴子石、绿辉石等多种有用矿物,具有较高的综合利用价值。

关键词: 超高压变质带, 榴辉岩, 地球化学, 综合利用

Abstract:

The northern Jiangsu ultrahigh-pressure metamorphic belt is the eastern extending portion of the Qinling-Dabieshan
Orogenic Zone. According to the country rocks, the eclogites occurring in this belt can be classified into three types: G-type   in
gneiss, M-type  in marble and S-type  in serpentinite. Geochemical characteristics of eclogites show  that  their original  rocks are
complicated and related to mafic-ultramafic rocks derived from the lower crust or upper mantle with properties of both continental
and oceanic basalts. The eclogites contain useful compositions and are host  rocks of  rutile etc. deposits. Mineralization of
rutile  in eclogites  is mainly  related  to subduction and collision of  the North China Plate with  the Yangtze Plate and controlled
by characteristics of  lithology, deformation, and metamorphism. The eclogites contain many valuable minerals such as  rutile,
ilmenite, apatite, garnet, omphacite and thus have high economic significance for comprehensive utilization.

Key words: Ultra-highpressure metamorphic belt, eclogite, geochemistry, mineralization, comprehensive utilization

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