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| 石门雄黄矿区角砾岩硅质岩成因新探 | |
| 引用本文： | 刘学义. 石门雄黄矿区角砾岩硅质岩成因新探[J]. 湖南地质, 1992, 11(1): 11-15 |
| 作者姓名： | 刘学义 |
| 作者单位： | 湖南省地质矿产局四○三队 石门 |
| 摘 要： | 石门雄黄矿区范围内131处角砾岩、硅质岩露头的产出层位和标高统计表明该区硅质岩和角砾岩的分布主要受奥陶系南津关组(On)和红花园组第二段(Oh~2)两个层位控制。这些地质体的结构构造特征亦表明其为同生或准同生成因;稳定同位素特征表明其成岩流体为海水、大气成因水或原生水。元素含量统计分析表明这些硅质岩和角砾岩是富含As、HB、Ba的地质体,与本区的雄黄一雌黄矿化有密切的成因联系。 |
| 关 键 词： | 角砾岩 硅质岩 成因 地球化学 |
NEW UNDERSTANDING ABOUT THE ORIGIN OF THE BRECCIA AND SILICEOUS ROCKS IN SHIMEN REALGAR ORE DISTRICT |
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| Liu Xueyi. NEW UNDERSTANDING ABOUT THE ORIGIN OF THE BRECCIA AND SILICEOUS ROCKS IN SHIMEN REALGAR ORE DISTRICT[J]. Land & Resources Herald, 1992, 11(1): 11-15 | |
| Authors: | Liu Xueyi |
| Affiliation: | No.403 Party of Hunan Bureau of Geology and Mineral Resources |
| Abstract: | The statistics of the elevation and stratigraphic horizon of 131 outcrops of breccia and siliceous rocks within the scope of Shimen realgar ore district indicate that the distribution of the breccia and siliceous rocks in this area is mainly controlled by two stratigraphic horizons, that is, Nanjinguan Formation (On) and the second Member of Honghuayuan Formation (Oh~2) of Ordovician System. The texture and structure of these geological bodies also indicate its syngenetic or parasyngenetic origin. The stable isotope composition indicates that their rock-forming fluid is the seawater, meteoric water or primary water. Statistical analysis of element contents indicate that these breccia and siliceous rocks are As, Hg, Ba-rich geologic bodies, which are of close genetic connection with the realgar-orpiment mineralization in this region |
| Keywords: | Breccia Siliceous rock Realgar mineralization Geochemistry Frequency histogram |
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