| 河南嵩山石秤岩体稀土元素特征及矿源研究 |
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| 引用本文： | 于海涛, 孟庆海, 郭骞. 河南嵩山石秤岩体稀土元素特征及矿源研究[J]. 西北地质, 2016, 49(1): 34-38. |
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| 作者姓名： | 于海涛 孟庆海 郭骞 |
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| 作者单位： | 1.内蒙古自治区第九地质矿产勘查开发院, 内蒙古 锡林郭勒 026000;中国地质大学, 北京 100083;; 2.内蒙古自治区第九地质矿产勘查开发院, 内蒙古 锡林郭勒 026000 |
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| 基金项目： | 中国地质调查局河南省1:5万大口集等4幅区调项目(1212011120767) |
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| 摘 要： | 石秤岩体是王屋山期岩浆活动形成的碱性岩体,其稀土元素特征为:ωΣREE约为地壳丰度的6.0倍,ωLREE/ωHREE为地壳丰度的近1.5倍,轻重稀土分异程度低,δEu呈强负异常, 基本无δCe异常,侵入岩体围岩与稀土、稀有金属矿化体(碱长花岗岩)的稀土元素分布型式基本相似,呈向右陡倾斜线,但碱长花岗岩中稀土总量更高、重稀土相对更为富集.研究结果表明,岩浆和成矿物质最初可能均来源于上地幔的同一岩浆房,具有同源性,并在岩浆上侵过程中不同程度地同化混染了地壳物质.
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| 关 键 词： | 石秤岩体 稀土元素 成矿物质来源 同源性 河南嵩山 |
| 收稿时间： | 2015-01-23 |
| 修稿时间： | 2015-06-12 |
REE Characteristics and Ore Source of Shicheng Rock-mass in Songshan,Henan |
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| YU Haitao, MENG Qinghai, GUO Qian. REE Characteristics and Ore Source of Shicheng Rock-mass in Songshan, Henan[J]. Northwestern Geology, 2016, 49(1): 34-38. |
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| Authors: | YU Haitao MENG Qinghai GUO Qian |
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| Affiliation: | 1.The Ninth Geological and Mineral Resource Exploration and Exploitation Institute of Inner Mongolia, Xilin Gol 026000, Inner Mongolia, China;China University of Geosciences, Beijing 100083, China;; 2.The Ninth Geological and Mineral Resource Exploration and Exploitation Institute of Inner Mongolia, Xilin Gol 026000, Inner Mongolia, China |
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| Abstract: | In ancient Proterozoic, the Shicheng alkaline rock-mass was formed as a result of magmatic intrusion. As shown by statistical analysis of REE in these rock-masses, the total content of ωREE is nearly 6 times as the crustal clarke value, the ratio of ωLREE/ωHREE is nearly 1.5 times as that of the crust, and the fractionation of LREE and HREE is slight, whereas Eu is strongly depleted, and Ce is not basically depleted. The REE distribution patterns of intrusive bodies' wall rock are basically similar to the ones of rare matal mineralized body (alkali-feldspar granites), all dipping steeply towards the right. Never less ∑REE and HREE are richer in alkali-feldspar granites than in magmatite. The results show that the magma and metallogenetic materials of these rock-masses might be derived mainly from the same magma chamber in the upper mantle, both of them were homologous, and they assimilated and mixed the crustal materials with different degree during the intrusion of magma. |
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| Keywords: | Shicheng rock-mass rare earth elements ore source homology Songshan |
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