Some Notes on the Lugiin Gol, Mushgai Khudag and Bayan Khoshuu Alkaline Complexes, Southern Mongolia
Some Notes on the Lugiin Gol, Mushgai Khudag and Bayan Khoshuu Alkaline Complexes, Southern Mongolia
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DOI：
10.4236/ijg.2013.48114
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发表时间：
2013-10
期刊：
影响因子：
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通讯作者：
Munkhtsengel Baatar;G. Ochir;J. Kynický;S. Iizumi;P. Comin-Chiaramonti
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文献类型：
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作者：
Munkhtsengel Baatar;G. Ochir;J. Kynický;S. Iizumi;P. Comin-Chiaramonti
蒙古南部Lugiin Gol、Mushgai Khudag和巴彦Khoshuu的火山-深成碱性杂岩（分别为244、139和131 Ma）产于东西向线性构造的地堑内。它们以正长岩型（硅欠饱和-硅稍过饱和）钾质岩为代表，与碳酸岩脉网、岩墙等共生，地球化学特征和同位素系统学表明，它们是一个富含LILE和LREE的脉状地幔源。碳酸岩脉体中Ba、Sr、Th、REE等元素含量高，具有找矿潜力。
Volcanic-plutonic alkaline complexes from Lugiin Gol, Mushgai Khudag and Bayan Khoshuu, southern Mongolia (244, 139 and 131 Ma, respectively) occur within grabens in E-W lineaments. They are represented by syenitic rock-types (silica undersaturated to slightly silica oversaturated) potassic rocks and are associated to stockworks of carbonatitic veins, dykes and so on. Geochemical characteristics and isotope systematics point to a veined mantle source particularly enriched in LILE and LREE. The carbonatitic veins show high contents of Ba, Sr, Th and REE and are suitable as potential ore deposits.