| 青州市马家庄地区黏土矿成矿地质特征研究 |
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| 引用本文： | 刘继勇,武斌,张洪滨,董美川.青州市马家庄地区黏土矿成矿地质特征研究[J].山东国土资源,2022,38(1):26-30. |
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| 作者姓名： | 刘继勇 武斌 张洪滨 董美川 |
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| 作者单位： | 山东省第四地质矿产勘查院,山东省地矿局海岸带地质环境保护重点实验室,山东潍坊261021 |
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| 基金项目： | 山东省地勘基金项目“山东省1∶5万井幅、悦庄幅区域矿产地质调查”(鲁勘字[2016]43号);“山东省1∶5万王坟、临朐县幅区域矿产地质调查”(鲁勘字[2020]16号);山东省地质矿产勘查开发局2021年度地质勘查科技创新项目,沂沭断裂带中段地质矿产调查与找矿潜力评价,鲁地字[2021]6号。 |
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| 摘 要： | 青州市马家庄地区黏土矿主要赋存于第四纪中-上更新统大站组及全新统临沂组,赋矿层系分布面积较广,整体自南向北微有倾斜,呈等轴状展布,其厚度与古地形密切相关,古地形凹陷处矿体厚度较大,隆起区则较小,平均厚度12.61 m,厚度变化系数27.79％.经差热分析可知,黏土矿石主要由蒙脱石+水云母+石英组成.属于陆相残—坡积混合...
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| 关 键 词： | 黏土矿 地质特征 矿床成因 马家庄地区 |
Study on Geological Characteristics of Clay Deposit in Majiazhuang Area in Qingzhou City |
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| LIU Jiyong,WU Bin,ZHANG Hongbin,DONG Meichuan.Study on Geological Characteristics of Clay Deposit in Majiazhuang Area in Qingzhou City[J].Land and Resources in SHANDONG Province,2022,38(1):26-30. |
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| Authors: | LIU Jiyong WU Bin ZHANG Hongbin DONG Meichuan |
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| Institution: | (No.4 Exploration Institute of Geology and Mineral Resources, Key Laboratory of Coastal Zone Geological Environment Protection of Shandong Provincial Bureau of Geology and Mineral Resources, Shandong Weifang 261021, China) |
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| Abstract: | Clay deposit in Majiazhuang area in Qingzhou city mainly occur in Dazhan formation in middle and upper Pleistocene and Holocene formation in Quaternary. The orebearing strata are distributed widely. The whole is slightly inclined from south to north and distributed in an equiaxed shape. Its thickness is closely related to the paleotopography. The thickness of the ore body in the paleotopography depression is large, while the uplift area is small. The average thickness is 12.61m and a thickness variation coefficient is 27.79%. According to differential thermal analysis, clay deposit is mainly composed of montmorillonite+hydromica+quartz. It belongs to continental facies eluvial deluvial mixed deposit, with eluvial facies in the lower part and deluvial facies in the middle and upper part. The average grade of the ore in the whole area is SiO2 67.61%, Fe2O3 5.35%, Al2O3 14.79%. The average value of silicic acid rate is n=3.37, and the average value of aluminic acid rate is p=2.77, which can be mined as clay raw materials for cement. For clay deposits in this area, predecessors have done a lot of exploration work, and the accumulated original geological data are very rich. In this paper, the ore bearing horizon and spatial variation characteristics of clay deposits in this area have been analyzed and summarized, and the origin and metallogenic geological characteristics of the deposit have been discussed. It will provide some references for clay prospecting in this area in the future. |
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| Keywords: | Clay deposit geological characteristics origin of the deposit Majiazhuang area |
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