Distinct formation history for deep-mantle domains reflected in geochemical differences
文献类型：期刊论文
| 作者 | Doucet, Luc S.3; Li, Zheng-Xiang3; Gamal El Dien, Hamed2,3; Pourteau, Amaury3; Murphy, J. Brendan3,4; Collins, William J.3; Mattielli, Nadine8; Olierook, Hugo K. H.6,7; Spencer, Christopher J.3,5; Mitchell, Ross N.1,3 |
| 刊名 | NATURE GEOSCIENCE
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 13期号:7页码:511-+ |
| ISSN号 | 1752-0894 |
| DOI | 10.1038/s41561-020-0599-9 |
| 英文摘要 | The Earth's mantle is currently divided into the African and Pacific domains, separated by the circum-Pacific subduction girdle, and each domain features a large low shear-wave velocity province (LLSVP) in the lower mantle. However, it remains controversial as to whether the LLSVPs have been stationary through time or dynamic, changing in response to changes in global subduction geometry. Here we compile radiogenic isotope data on plume-induced basalts from ocean islands and oceanic plateaus above the two LLSVPs that show distinct lead, neodymium and strontium isotopic compositions for the two mantle domains. The African domain shows enrichment by subducted continental material during the assembly and breakup of the supercontinent Pangaea, whereas no such feature is found in the Pacific domain. This deep-mantle geochemical dichotomy reflects the different evolutionary histories of the two domains during the Rodinia and Pangaea supercontinent cycles and thus supports a dynamic relationship between plate tectonics and deep-mantle structures. Earth's deep-mantle domains are geochemically distinct. The African domain is enriched in subducted material, which suggests a different history from the Pacific domain and a dynamic relationship between plate tectonics and deep-mantle structures. |
| WOS关键词 | LARGE IGNEOUS PROVINCES ; HELIUM-ISOTOPES ; CONTINENTAL BREAKUP ; HE-3/HE-4 RATIOS ; VOLCANIC-ROCKS ; PLUME ; ORIGIN ; SHEAR ; SR ; EVOLUTION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000544997400013 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/97144]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Doucet, Luc S. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Tanta Univ, Geol Dept, Fac Sci, Tanta, Egypt 3.Curtin Univ, Sch Earth & Planetary Sci, Earth Dynam Res Grp, TIGeR, Perth, WA, Australia 4.St Francis Xavier Univ, Dept Earth Sci, Antigonish, NS, Canada 5.Queens Univ, Dept Geol Sci & Geol Engn, Kingston, ON, Canada 6.Curtin Univ, John Laeter Ctr, Perth, WA, Australia 7.Curtin Univ, Ctr Explorat Targeting Curtin Node, Timescales Mineral Syst, Perth, WA, Australia 8.Univ Libre Bruxelles, Lab G Time, ULB, Brussels, Belgium |
| 推荐引用方式 GB/T 7714 | Doucet, Luc S.,Li, Zheng-Xiang,Gamal El Dien, Hamed,et al. Distinct formation history for deep-mantle domains reflected in geochemical differences[J]. NATURE GEOSCIENCE,2020,13(7):511-+. |
| APA | Doucet, Luc S..,Li, Zheng-Xiang.,Gamal El Dien, Hamed.,Pourteau, Amaury.,Murphy, J. Brendan.,...&Mitchell, Ross N..(2020).Distinct formation history for deep-mantle domains reflected in geochemical differences.NATURE GEOSCIENCE,13(7),511-+. |
| MLA | Doucet, Luc S.,et al."Distinct formation history for deep-mantle domains reflected in geochemical differences".NATURE GEOSCIENCE 13.7(2020):511-+. |
入库方式： OAI收割
来源：地质与地球物理研究所
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