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| 准格尔煤田西南部煤层夹矸及顶底板稀土元素地球化学特征及地质意义 | |
| 引用本文： | 张有河,王晓明,刘东娜.准格尔煤田西南部煤层夹矸及顶底板稀土元素地球化学特征及地质意义[J].中国煤炭地质,2014(10):13-16,32. |
| 作者姓名： | 张有河 王晓明 刘东娜 |
| 作者单位： | 1. 神华神东煤炭公司,陕西神木,719315 2. 内蒙古矿业开发有限责任公司,内蒙古呼和浩特,010020 3. 太原理工大学,山西太原,030024 |
| 基金项目： | 国家自然科学基金青年科学基金项目(41103052)。 |
| 摘 要： | 准格尔煤田含煤岩系高岭岩资源丰富，高铝矿物来源备受关注。采用高分辨率电感耦合等离子质谱等技术对石炭-二叠系太原组6号和山西组4号煤夹矸及顶底板中的稀土元素进行分析，并探讨了其物质来源。结果表明，6号煤夹矸及顶底板中稀土元素总量（ΣREY）均值为167.69μg/g，接近上地壳ΣREY值（168.4μg/g）；4号煤夹矸及顶底板中ΣREY均值为210.22μg/g，高于上地壳的ΣREY值。4号煤夹矸及顶底板中轻稀土含量均值与6号煤相当，中稀土和重稀土含量均值为6号煤两倍以上。6号煤夹矸及顶底板分层样中δCe为0.82～0.94，δEu为0.53～0.87；4号煤中δCe为0.88～0.98，δEu为0.74～0.97；均为Ce、Eu负异常。6号煤层夹矸及顶底板稀土元素主要来源于盆地北西侧阴山地区元古界花岗岩和北东侧下古生界沉积岩。4号煤层夹矸及顶底板稀土元素物源主要为盆地北侧阴山地区下古生界和元古界的沉积岩和火成岩系。 |
| 关 键 词： | 准格尔煤田 夹矸 稀土元素 地球化学 地质意义 |
Geochemical Characteristics and Geological Significance of Coal Seam Parting,Roof and Floor Rare Earth Elements in Southwestern Jungar Coalfield |
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| Zhang Youhe,Wang Xiaoming,Liu Dongqing.Geochemical Characteristics and Geological Significance of Coal Seam Parting,Roof and Floor Rare Earth Elements in Southwestern Jungar Coalfield[J].Coal Geology of China,2014(10):13-16,32. | |
| Authors: | Zhang Youhe Wang Xiaoming Liu Dongqing |
| Institution: | Zhang Youhe;Wang Xiaoming;Liu Dongqing;Shenhua Shendong Coal Group Co. Ltd.;Inner Mongolia Mining Exploitation Co. Ltd.;Taiyuan University of Technology; |
| Abstract: | The kaolin resource is abundant within coal measures in the Jungar coalfield;the source of high aluminum minerals is a mat-ter of great concern. Using high resolution ICP-MS and other technologies carried out analysis of rare earth elements in coal parting, roof and floor of the Permo-Carboniferous Taiyuan Formation coal No.6 and Shanxi Formation coal No.4 and discussed their material sources. The result has shown that the mean total value of rare earth elements （ΣREY） in coal No.6 parting, roof and floor is 167.69μg/g, close to meanΣREY （168.4μg/g） in upper crust;in coal No.4 parting, roof and floor 210.22μg/g, higher than in upper crust. MeanΣREY of light rare earth elements in coal No.4 parting, roof and floor is corresponding to coal No.6; middle-weight and heavy rare earth elements in coal No.4 is above two times than in coal No.6. TheδCe in coal No.6 parting, roof and floor stratified samples is 0.82~0.94,δEu is 0.53~0.87;in coal No.4 are 0.88~0.98 and 0.74~0.97 respectively;thus the Ce and Eu are all negative anomaly. Prove-nances of rare earth elements in coal No.6 parting, roof and floor are mainly from basin northwest side Yinshan area Proterozoic granite and northeast side lower Paleozoic sedimentary rocks. Rare earth elements in coal No.4 parting, roof and floor are mainly from basin north side Yinshan area lower Paleozoic and Proterozoic sedimentary rocks and igneous rock series. |
| Keywords: | Jungar coalfield parting rare earth element geochemistry geological significance |
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