| 内蒙古特颇格日图地区大理岩的地球化学特征及成因探讨 |
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| 引用本文： | 龚瑞君,张建芳,刘峰,马娟.内蒙古特颇格日图地区大理岩的地球化学特征及成因探讨[J].地质找矿论丛,2011,26(1):58-62. |
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| 作者姓名： | 龚瑞君 张建芳 刘峰 马娟 |
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| 作者单位： | 龚瑞君,GONG Rui-jun(浙江省地质调查院,杭州,311203;成都理工大学核技术与自动化工程学院,成都,610059);张建芳,ZHANG Jian-fang(浙江省地质调查院,杭州,311203);刘峰,马娟,LIU Feng,MA Juan(成都理工大学核技术与自动化工程学院,成都,610059) |
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| 摘 要： | 在内蒙古特颇格日图地区分布的大理岩出露于志留系徐尼乌苏组含砾砂岩或粉砂岩中,呈EW向线状断续展布,多数为似层状和透镜体状,且有相当一部分大理岩与蚀变超基性岩呈复杂的空间关系。大理岩稀土元素球粒陨石标准化配分型式为向右缓倾型,REE总量低,具弱Eu负异常。微量元素数据显示大离子亲石元素Rb,Sr,Th相对富集,高场强元素Nb,Zr等相对亏损。（87Sr/86Sr）0=0.7085~0.7100,平均0.7091。该区大理岩地质地球化学特征与沉积的碳酸盐岩相似,其原岩应为沉积型碳酸盐岩。
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| 关 键 词： | 大理岩 碳酸盐岩 地球化学 特颇格日图地区 内蒙古 |
| 收稿时间： | 2009/10/9 0:00:00 |
| 修稿时间： | 2011/1/26 0:00:00 |
Geochemical characteristics and genetic discussion of the marble in Tepogeritu area,Inner Mongolia |
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| GONG Rui-jun,ZHANG Jian-fang,LIU Feng and MA Juan.Geochemical characteristics and genetic discussion of the marble in Tepogeritu area,Inner Mongolia[J].Contributions to Geology and Mineral Resources Research,2011,26(1):58-62. |
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| Authors: | GONG Rui-jun ZHANG Jian-fang LIU Feng and MA Juan |
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| Institution: | GONG Rui-jun1,2,ZHANG Jian-fang1,LIU Feng2,MA Juan2(1.Zhejiang institute of geological survey,Hangzhou 311203,China,2.College of NuclearTechnology and Automation,Chengdu Universiry of Technology,Chengdu 610059,China) |
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| Abstract: | The marble in Tepogeritu area occurs generally in concomitantly linear layeroid bodies or lenses in the conglomeratic sandstone or siltstone of Silurian Xuniwusu formation showing complicated spatial relation with the altered ultra basic rocks.The REE chondrite-normalized distribution pattern of marble dips gently rightwards with low total REE,weak negative Eu anomaly.Trace elements are characterized by relative enrichment of LILE Rb,Sr,Th;relative depletion of HFSE Nb,Zr.The ratio of（87Sr/86Sr）0 is 0.7085～0.7100,and medium value 0.7091.It is geologically and geochemically similar to sedimentary carbonate rocks,and the original rock should be normal sedimentary carbonate rock instead of the previous carbonatite. |
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| Keywords: | marble carbonate rocks geochemistry Tepogeritu area Inner Mogolia |
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