| 矾山碱性杂岩体中发现碳酸岩 |
| |
| 引用本文： | 牟保磊,邵济安,边振辉.矾山碱性杂岩体中发现碳酸岩[J].北京大学学报(自然科学版),1999,35(2):243-247. |
| |
| 作者姓名： | 牟保磊 邵济安 边振辉 |
| |
| 作者单位： | 北京大学地质学系，北京，100871; 河北矾山磷矿，河北涿鹿矾山磷矿，075641 |
| |
| 基金项目： | 国家自然科学基金;249472143; |
| |
| 摘 要： | 矾山杂岩体是中心型碱性超基性岩——碱性岩侵入体。它由三期侵入岩组成，在三期岩石形成之后有碳酸岩和正长岩脉形成。碳酸岩主要岩石类型包括：黑云母方解石碳酸岩、正长石—黑云母方解石碳酸岩、黄铁矿—方解石碳酸岩等。碳酸岩锶的含量为3364×10-6～19263×10-6, 钡的含量为323×10-6～378×10-6。碳酸岩的稀土元素∑REE为323×10-6～551×10-6, 其δEu值0.99～1.1，(La/Yb)N为291.9～759.4。碳酸岩的δ18O值是+8.6×10-3～+10.2×10-3,
δ13C为-4.9×10-3。根据上述事实认为碳酸岩的物质源自岩浆。
|
| 关 键 词： | 矾山 碱性杂岩体 碳酸岩 |
| 收稿时间： | 1997-11-28 |
Discovery of Carbonatite in the Fanshan Alkaline Igneous Complex in Hebei Province,China |
| |
| MU Baolei,SHAO Ji'an,BIAN Zhenhui.Discovery of Carbonatite in the Fanshan Alkaline Igneous Complex in Hebei Province,China[J].Acta Scientiarum Naturalium Universitatis Pekinensis,1999,35(2):243-247. |
| |
| Authors: | MU Baolei SHAO Ji'an BIAN Zhenhui |
| |
| Institution: | Department of Geology, Peking University, Beijing, 100871; Fanshan Phosphorus Mine, Hebei Province, China, 075641 |
| |
| Abstract: | The Fanshan complex is central type alkaline ultrabasic rock-alkaline rock intrusion. It was formed by three period intrusions and all period rocks was penetraed by carbonatites and synite vein rocks. The main type of the carbonatites rock includes: biotite calcite carbonatite, orthoclase-biotite calcite carbonatite, pyrite-calcite carbonatite and so on. Content of Strontium is 0.003364-0.019263, and content of Barium is 0.000323-0.000378 in the carbonatites. The ∑REE is 0.000323-0.000551, and the δEu value is 0.99-1.1, and the (w(La)/w(Yb))N ratio is 291.9-759.4 in the carbonatite. The δ18O value of the carbonatite is +0.0086-+0.0102, and the δ13C value of carbonatite is -0.0049. On the basic facts described above, it is thought that the carbonatite originated basically from magma. |
| |
| Keywords: | Fanshan alkaline igneous complex carbonatite |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《北京大学学报(自然科学版)》下载免费的PDF全文 |
|
