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首页> 外文期刊>Geosciences >Silification of the Mesozoic Rocks Accompanying the Be?chatów Lignite Deposit, Central Poland
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Silification of the Mesozoic Rocks Accompanying the Be?chatów Lignite Deposit, Central Poland

机译：伴随着Be的中生代岩石的硅化？ChatówLignite沉积物，波兰中部

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Fieldwork and exploratory study of Poland’s Be?chatów lignite deposit reveals that the Jurassic and Cretaceous sediments with overlying Neogene clays include rocks of greater hardness than the primary composition would indicate. Mineralogical and petrographic tests show the impact of secondary mineralization involving silification in particular. Transitional and carbonate rocks observed microscopically and subjected to X-ray examination show numerous polymorphic forms of silica replacing carbonate minerals. Opal types A and CT, chalcedony, quartz and microcrystalline quartz are all present. The process of silification observed is a selective and multistage one, with selective activity entailing the displacement and replacement of carbonates from older rocks, mainly Cretaceous opoka-rocks and marls, and Jurassic limestones. The opal fills tectonic fractures and has cemented cracked grains. Cathodoluminescence analysis identifies several generations of silica. The rocks have undergone advanced diagenesis as is evidenced by the recorded metasomatic reactions between minerals. They can further be assumed to be in the locomorphic stage. Such observations are relevant to efforts to reconstruct the origin of the rock matrix, and to the study of its textural features. In addition, the tests run on rocks of the lignite series would seem to be of significant value in identifying and developing associated rocks.
机译：Poland的实地工作和探索性研究？ChatówLignite押金表明，卧室粘土的侏罗纪和白垩纪沉积物包括比主要组合物更大的硬度更大的岩石。矿物学和岩体检测表明，特别是涉及硅化的二级矿化的影响。显微镜和碳酸盐岩被显微镜观察并进行X射线检查，显示多种多态形式的二氧化硅，取代碳酸盐矿物质。蛋白石类型A和CT，Chalcody，石英和微晶石英都存在。观察到硅化的过程是一种选择性和多级，具有从较旧的岩石的碳酸酯，主要是白垩纪Opoka-rock和Marls和侏罗纪石灰石的选择性活动。蛋白石填充构造骨折并粘合裂纹颗粒。阴极致发光分析识别几代二氧化硅。岩石经历了高级成岩作用，如矿物质之间所记录的态化反应所证明的。他们可以进一步假设在象状阶段。这种观察与重建岩石矩阵的起源以及研究其纹理特征的努力是相关的。此外，在褐煤系列的岩石上运行的测试似乎是识别和发展相关岩石的重要价值。

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