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| DOI | 10.1038/s41561-022-00929-y |
| Thermochemical structure and evolution of cratonic lithosphere in central and southern Africa | |
| Afonso J.C.; Ben-Mansour W.; O’Reilly S.Y.; Griffin W.L.; Salajeghegh F.; Foley S.; Begg G.; Selway K.; Macdonald A.; Januszczak N.; Fomin I.; Nyblade A.A.; Yang Y. | |
| 发表日期 | 2022 |
| ISSN | 1752-0894 |
| 起始页码 | 405 |
| 结束页码 | 410 |
| 卷号 | 15期号:5 |
| 英文摘要 | The thermochemical structure of the subcontinental mantle holds information on its origin and evolution that can inform energy and mineral exploration strategies, natural hazard mitigation and evolutionary models of Earth. However, imaging the fine-scale thermochemical structure of continental lithosphere remains a major challenge. Here we combine multiple land and satellite datasets via thermodynamically constrained inversions to obtain a high-resolution thermochemical model of central and southern Africa. Results reveal diverse structures and compositions for cratons, indicating distinct evolutions and responses to geodynamic processes. While much of the Kaapvaal lithosphere retained its cratonic features, the western Angolan–Kasai Shield and the Rehoboth Block have lost their cratonic keels. The lithosphere of the Congo Craton has been affected by metasomatism, increasing its density and inducing its conspicuous low-topography, geoid and magnetic anomalies. Our results reconcile mantle structure with the causes and location of volcanism within and around the Tanzanian Craton, whereas the absence of volcanism towards the north is due to local asthenospheric downwellings, not to a previously proposed lithospheric root connecting with the Congo Craton. Our study offers improved integration of mantle structure, magmatism and the evolution and destruction of cratonic lithosphere, and lays the groundwork for future lithospheric evolutionary models and exploration frameworks for Earth and other terrestrial planets. © 2022, The Author(s), under exclusive licence to Springer Nature Limited. |
| 语种 | 英语 |
| scopus关键词 | continental lithosphere; exploration; mantle structure; mineral exploration; natural hazard; thermochemistry; volcanism; Congo Craton; Democratic Republic Congo; Kasai |
| 来源期刊 | Nature Geoscience
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/262212 |
| 作者单位 | Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, Netherlands |
| 推荐引用方式 GB/T 7714 | Afonso J.C.； Ben-Mansour W.； O’Reilly S.Y.； Griffin W.L.； Salajeghegh F.； Foley S.； Begg G.； Selway K.； Macdonald A.； Januszczak N.； Fomin I.； Nyblade A.A.； Yang Y.. Thermochemical structure and evolution of cratonic lithosphere in central and southern Africa[J],2022,15(5). |
| APA | Afonso J.C.； Ben-Mansour W.； O’Reilly S.Y.； Griffin W.L.； Salajeghegh F.； Foley S.； Begg G.； Selway K.； Macdonald A.； Januszczak N.； Fomin I.； Nyblade A.A.； Yang Y..(2022).Thermochemical structure and evolution of cratonic lithosphere in central and southern Africa.Nature Geoscience,15(5). |
| MLA | Afonso J.C.； Ben-Mansour W.； O’Reilly S.Y.； Griffin W.L.； Salajeghegh F.； Foley S.； Begg G.； Selway K.； Macdonald A.； Januszczak N.； Fomin I.； Nyblade A.A.； Yang Y.."Thermochemical structure and evolution of cratonic lithosphere in central and southern Africa".Nature Geoscience 15.5(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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