Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1016/j.jseaes.2021.104773 |
| Geochemistry and origin of high-Sr carbonatite from the Nuba Mountains, Arabian-Nubian Shield, Sudan | |
| Baioumy, Hassan | |
| 通讯作者 | Baioumy, H (corresponding author), Cent Met R&D Inst, Minerals Technol Div, POB 87, Cairo, Egypt. |
| 来源期刊 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| ISSN | 1367-9120 |
| EISSN | 1878-5786 |
| 出版年 | 2021 |
| 卷号 | 214 |
| 英文摘要 | Carbonatite from the Arabian-Nubian Shield of Sudan occurs as dykes in the Nuba Mountains. It is composed of calcite with some feldspars, quartz and fluorite. CaO is the major constituent in this carbonatite and accordingly, it is classified as calico-carbonatite. The studied carbonatite shows exceptionally high concentrations of SrO (4.4 to 5.9 wt%). Ba, Pb and Y occur in relatively higher concentrations compared to other trace elements. Concentration of rare earth elements (sigma REEs) is relatively low (average 1550 ppm) compared to many primary igneous carbonatites. The chondrite-normalized REE patterns display higher light rare earth elements (LREEs) compared to heavy rare earth elements (HREEs) with slight negative Ce/Ce* and Eu/Eu* anomalies. The 818OVSMOW values range between 7.48 and 10.05 & permil;, while 813CV-PDB values vary from -6.24 to - 7.38 & permil;, which is close to the primary carbonatites values. Occurrence of carbonatite as dykes with cumulate and triple junction textures, plot of the carbonatite in the true carbonatite fields of the Ba-Sr and Ba + Sr-REE + Y diagrams, igneous-derived 813CV-PDB and 818OV-SMOW values and high (La/Yb)N ratios indicate its primary igneous origin. The strong positive correlation between REEs and Sr suggests the occurrence of these elements as secondary strontianite, which was confirmed by SEM and EDX analyses. This might indicate that the enrichment of REEs and Sr in the studied carbonatite is not from the primary magma and most probably took place during a sub-solidus metasomatic process after the carbonatite emplacement. |
| 英文关键词 | Carbonatite Arabian-Nubian Shield Nuba Mountains Sudan REE Strontium Stable isotopes Origin |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000656155900003 |
| WOS关键词 | EASTERN DESERT ; COMPLEX ; PETROGENESIS ; ISOTOPE ; GENESIS ; MANTLE ; PARAGENESIS ; MINERALOGY ; ELEMENTS ; GRAVITY |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS研究方向 | Geology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/350733 |
| 作者单位 | [Baioumy, Hassan] Cent Met R&D Inst, Minerals Technol Div, POB 87, Cairo, Egypt |
| 推荐引用方式 GB/T 7714 | Baioumy, Hassan. Geochemistry and origin of high-Sr carbonatite from the Nuba Mountains, Arabian-Nubian Shield, Sudan[J],2021,214. |
| APA | Baioumy, Hassan.(2021).Geochemistry and origin of high-Sr carbonatite from the Nuba Mountains, Arabian-Nubian Shield, Sudan.JOURNAL OF ASIAN EARTH SCIENCES,214. |
| MLA | Baioumy, Hassan."Geochemistry and origin of high-Sr carbonatite from the Nuba Mountains, Arabian-Nubian Shield, Sudan".JOURNAL OF ASIAN EARTH SCIENCES 214(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Baioumy, Hassan]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Baioumy, Hassan]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Baioumy, Hassan]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
