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| Intrusion-related Gold Deposits in Egypt | |
| Botros Nagy Shawky | |
| 来源期刊 | 地质学报
 |
| ISSN | 1000-9515 |
| 出版年 | 2021 |
| 卷号 | 95期号:3页码:1000-9515 |
| 英文摘要 | Intrusion-related gold deposits (IRGDs) occur in the Eastern Desert (ED) of Egypt within magmatic districts that are exploited for tungsten and tin mineralization.IRGDs and intrusion-related rare metal deposits (IRRMDs) are almost invariably linked with the late to post collisional Younger Granites (YGs) that have three successive phases (I,II and III).At ~635-630 Ma,the ED underwent a transition in deformation style from compressional to extensional and a switch from subduction with crustal thickening to delamination with crustal thinning.This transition was concurrent with the emplacement of a short magmatic pulse (~635-630 Ma) that represents a transition between orogenic gold deposits and IRGDs.K-rich calc alkaline granites (phase I and II of the YGs) hosting IRGDs like the Hangalia deposit were emplaced during the time span 630-610 Ma.Alkaline magmatism began at 610 Ma,coexisting with the K-rich calc-alkaline magmatism over the 610-590 Ma time span,where the Fawakhir (598 3 Ma) and Um Had (596 2 Ma) granites that host the IRGDs were emplaced.In time,the alkaline magmatism became more alkaline giving rise to phase III of the YGs that hosts IRRMDs.A distinct metallogenic epoch comprising both IRGDs and IRRMDs,was undergoing extreme growth at ~600 Ma. |
| 英文关键词 | intrusion-related gold deposits intrusion-related rare metal deposits delamination crustal melting metallogenic epoch ~600 Ma Younger Granites |
| 类型 | Review |
| 语种 | 英语 |
| 国家 | 中国 |
| 收录类别 | CSCD |
| WOS类目 | Science & Technology - Other Topics |
| CSCD记录号 | CSCD:6994775 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/364990 |
| 作者单位 | Botros Nagy Shawky, Egyptian Mineral Resources Authority, Abbassia, Egypt. |
| 推荐引用方式 GB/T 7714 | Botros Nagy Shawky. Intrusion-related Gold Deposits in Egypt[J],2021,95(3):1000-9515. |
| APA | Botros Nagy Shawky.(2021).Intrusion-related Gold Deposits in Egypt.地质学报,95(3),1000-9515. |
| MLA | Botros Nagy Shawky."Intrusion-related Gold Deposits in Egypt".地质学报 95.3(2021):1000-9515. |
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