| 西秦岭地区的硅质岩及其成矿 |
| |
| 引用本文： | 殷先明.西秦岭地区的硅质岩及其成矿[J].甘肃地质学报,2013,22(4):15-21. |
| |
| 作者姓名： | 殷先明 |
| |
| 作者单位： | 甘肃省地矿局,甘肃兰州730000 |
| |
| 摘 要： | 西秦岭地区广泛分布与硅质岩有关的有色和贵金属矿床，特别是一些大型、超大型铅锌（铜）金矿床，这些矿床的容矿岩石为硅质岩，长期以来大多数学者都认为该类矿床是同生热水沉积矿床。基于前人研究成果．本文重，点研究了西成铅锌金矿集区、风太铅锌（铜）金矿集区和大水金矿集区的成矿地质背景、硅质岩与矿化的关系、硅质岩及成矿物质来源、成岩成矿时代、花岗岩与成矿关系、控矿构造和赋矿构造、围岩蚀变等7个方面的地质地球化学特征。认为该类矿床应属后生构造-岩浆-热液矿床。
|
| 关 键 词： | 西秦岭 硅质岩 矿化关系 |
SILICIOUS ROCK AND METALLOGENESIS IN WEST QINLING |
| |
| YIN Xian-min.SILICIOUS ROCK AND METALLOGENESIS IN WEST QINLING[J].Acta Geologica Gansu,2013,22(4):15-21. |
| |
| Authors: | YIN Xian-min |
| |
| Institution: | YIN Xian-min ( Gansu Provincial Bureau of Geology and Mineral Exploration and Development ,Lanzhou 730000, China) |
| |
| Abstract: | In west Qinling region, there are many nonferrous and precious metal deposits, especially some large and super large deposits, occurred in silicious rocks. Some researchers support that these deposits were syngenetic hydrothermal sedimentary deposit. The author studied 3 ore concentration areas as Xihe-Chenxian Pb- Zn-Au zone, Feng-Tai Pb-Zn-Cu zone and Dashui Au zone from such 7 aspects as metailogentic setting, relation between silicious rock and mineralization, sources of silicious rocks and ore-forming material, petrogenic and metallogenic age, relation of granite and mineralization, ore-control and ore-bearing structures, and wall rock alteration. The geochemistry show that the source of ore-forming and petrogenic material are the old basement crust, not the Devonian and Triassic strata. This type deposits in the study area should be epigenetic structural- magmatic-hydrothermal deposit. |
| |
| Keywords: | west Qinling silicious rocks metalogenic relations |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《甘肃地质学报》浏览原始摘要信息 |
| 点击此处可从《甘肃地质学报》下载免费的PDF全文 |
|
