长治盆地东南部硅藻土矿床地质特征及成矿分析
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P611.1

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国家自然科学青年项目(41802191);山西省2017年度省级地质勘查项目(201754)


Geological characteristics and metallogenic analysis of diatomite deposits in wuxiang, changzhi basin, shanxi
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National natural science foundation of China youth program (41802191); Shanxi provincial geological exploration project in 2017 (201754)

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    摘要:

    张村组硅藻土矿床发育于长治盆地武乡县张村组上部,其中硅藻类型含直链藻、中心纲小环藻、舟行藻以及羽纹藻等。硅藻土矿床属于河湖相沉积硅藻矿床,为“远矿源岩”受火山岩影响形成中等-低等品位的高钙型硅藻土矿床。硅藻土矿初步成岩后,长期处于碱性环境,硅藻形态上只剩壳面中轴区硅质增厚的部分,少数硅藻整体被溶蚀,多数为残缺型硅藻形态。中、上新世沉积地层、大型凹陷盆地,韵律性明显、水平层理发育的浅色沉积岩、任家垴的砾、砂石岩层,以及“榆社群”可以作为找矿标志或靶向。

    Abstract:

    The Zhangcun Formation diatomite deposit is developed in the upper part of the Zhangcun Formation in Changzhi basin in Wuxiang, Shanxi Province. The diatom type includes linear algae, small-circle algae, cyclamen, and diatoms. The diatomite deposit belongs to the river-lake facies sedimentary deposit, which is a type of high-calcium diatomite deposit classifed to medium-low grades affected by volcanic. After the initial diagenesis of diatomite ore, it developed in an alkaline environment for a long time. The residual is the thickened part of the central axis, and a small part of diatoms are completely dissolved, most of which are in the form of defective diatoms. Miocene and Pleiocene sedimentary formation, large depression basin, the pale-colored sedimentary rocks with obvious rhythm and horizontal bedding, the gravel and sandstone layers of Renjianao formation, and the “yushe group”are signs for prospecting.

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王涛,刘燕海,薛曙斌. 长治盆地东南部硅藻土矿床地质特征及成矿分析[J]. 科学技术与工程, 2020, 20(9): 3441-3447.
Wang Tao, Liu Yanhai, Xue Shubin. Geological characteristics and metallogenic analysis of diatomite deposits in wuxiang, changzhi basin, shanxi[J]. Science Technology and Engineering,2020,20(9):3441-3447.

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  • 收稿日期:2019-07-02
  • 最后修改日期:2020-01-08
  • 录用日期:2019-09-26
  • 在线发布日期: 2020-05-14
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