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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Volcanic architecture in the Odiel river area and the volcanic environment in the Riotinto-Nerva Unit, Iberian Pyrite Belt, Spain
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Volcanic architecture in the Odiel river area and the volcanic environment in the Riotinto-Nerva Unit, Iberian Pyrite Belt, Spain

机译：西班牙伊比利亚黄铁矿带奥迪尔河地区的火山建筑和里约托-涅尔瓦单元的火山环境

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摘要

In order to assess the volcanic architecture of the VSC in the Iberian Pyrite Belt, Spain, a study of the volcanic and sedimentary lithofacies has been undertaken on a section up to 1000 m thick in the Odiel river, considered to be also representative of other areas of the Riotinto-Nerva Unit. Among other mineral deposits, this unit includes the world-class volcanic-hosted massive sulfide deposits of the Riotinto mining district. Several conclusions have been obtained: a) a complex, thick volcanic succession, as well as mafic and felsic sills and thin sedimentary intervals, predated the genesis of the sulfide deposits, which did not form in a dominantly sedimentary environment; b) two successive, felsic volcanic sequences can be distinguished, showing textural and chemical variations from bottom to top; c) mafic lithofacies decrease upwards in the sequence, and d) volcanic structures, eruption style and internal organization suggest a deep subaqueous depositional environment, which agrees with the depositional setting for massive sulfide deposits.
机译：为了评估西班牙伊比利亚黄铁矿带中VSC的火山结构，对奥迪尔河最厚1000 m的一段火山和沉积岩相进行了研究，该河段也被认为是其他地区的代表Riotinto-Nerva单位的成员。除其他矿藏外，该单元还包括Riotinto矿区的世界一流的火山成因的大型硫化物矿床。已获得以下结论：a）硫化物矿床的形成早于在主要沉积环境中形成的复杂，厚厚的火山岩层序，镁铁质和长质基岩以及较薄的沉积间隔； b）可以区分两个连续的长英质火山序列，从底部到顶部显示出质地和化学变化； c）镁铁质岩相依次降低，并且d）火山构造，喷发方式和内部构造表明其水下深部沉积环境，与大量硫化物沉积的沉积环境相吻合。

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  • 来源
    《Journal of Volcanology and Geothermal Research》 |2011年第2期|p.29-46|共18页
  • 作者

    A. Valenzuela; T. Donaire; M.J.González-Roldán; M. Toscano E. Pascual;

  • 作者单位

    Departamento de Ceologia, Facultad de Ciencias Experimentales, Campus de El Carmen, Universidad de Huelva, Avda. Fuerzas Armadas sin, 21071 Huelva, Spain;

    Departamento de Ceologia, Facultad de Ciencias Experimentales, Campus de El Carmen, Universidad de Huelva, Avda. Fuerzas Armadas sin, 21071 Huelva, Spain;

    Departamento de Ceologia, Facultad de Ciencias Experimentales, Campus de El Carmen, Universidad de Huelva, Avda. Fuerzas Armadas sin, 21071 Huelva, Spain;

    Departamento de Ceologia, Facultad de Ciencias Experimentales, Campus de El Carmen, Universidad de Huelva, Avda. Fuerzas Armadas sin, 21071 Huelva, Spain;

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  • 正文语种 eng
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  • 关键词

    iberian pyrite belt; volcanic facies associations; massive sulfide deposits; rhyolite; spain;

    机译：伊比利亚黄铁矿带;火山岩相协会;大量硫化物矿床;流纹岩;西班牙;

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