| 史书森,冯松宝,汪宏志,胥翔,尹雪贞.淮南煤田口孜东矿太原组灰岩微量元素特征[J].西昌学院学报（自然科学版）,2023,37(3):59-65. |
| 淮南煤田口孜东矿太原组灰岩微量元素特征 |
| Characteristics of the Trace Elements in Limestone of Taiyuan Formation in Kouzidong Coalmine of Huainan Coalfield |
| 投稿时间：2022-12-20 修订日期：2023-02-15 |
| DOI：10.16104/j.issn.1673-1891.2023.03.010 |
| 中文关键词: 淮南煤田 口孜东矿 太原组 微量元素特征 沉积环境 |
| 英文关键词: Huainan coalfield Kouzidong coalmine Taiyuan formation characteristics of trace elements sedimentary environment |
| 基金项目:安徽省煤田地质局重点科技项目（2022jzd-2）；安徽省教育厅优秀人才项目（gxbjZD2022075）；国家级大学生创新创业项目（202310379031）；安徽省大学生创新创业项目（S202310379190、202310379031）。 |
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| 中文摘要: |
| 以淮南煤田口孜东矿太原组灰岩（一灰、二灰、三灰、四灰）为研究对象，对其微量元素进行地球化学特征分析，并对稀土元素的来源进行研究，通过相关的微量元素丰度比值反演其古沉积环境。结果表明：研究区一灰与二灰中Zr、Th和Sc丰度远高于上地壳元素丰度，这表明沉积过程中主要受陆源碎屑物影响。ω（Sr）/ω（Ba）<1，总体指示为陆相沉积。三灰与四灰中具有重稀土元素的富集、Y的正异常和Gd的正异常，表现出与海相灰岩相似的稀土元素特征。ω（Sr）/ω（Ba）>1，总体指示为海相沉积。通过ω（Sr）/ω（Cu）<1确定为干旱炎热的古气候，通过ω（V）/ω（Cr）和ω（V）/ω（V+Ni）结合δCe与δEu确定沉积环境为滨海的干热氧化环境。 |
| 英文摘要: |
| With the limestone of Taiyuan formation (1~4 limestone) of Kouzidong Coalmine in Huainan coalfield as the research object, the geochemical characteristics of the trace elements, the sources of rare earth elements, and its ancient sedimentary environment by the relative ratio of trace elements were analyzed. The results show that the content of Zr, Th and Sc in the first and second limestone is much higher than that in the upper crust, which indicates that the sedimentary process is mainly influenced by terrigenous detrital materials. At the same time, the ratio of ω（Sr）/ω（Ba） is less than 1, indicating the continental deposition. The enrichment of HREE, positive anomaly of Y and positive anomaly of Gd are found in the three and four limestone, which are similar to the characteristics of rare earth elements in Marine limestone. The ratio of ω（Sr）/ω（Ba） is greater than 1, which indicates the marine deposition. ω（Sr）/ω（Cu） reflects the dry and hot paleoclimate, and the combination of ω（V）/ω（Cr） and ω（V）/ω（V+Ni） with δCe and δEu indicates that the sedimentary environment is coastal dry and hot oxidation environment. |
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