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DOI | 10.1038/s41561-020-0599-9 |
Distinct formation history for deep-mantle domains reflected in geochemical differences | |
Doucet, Luc S.1; Li, Zheng-Xiang1; Gamal El Dien, Hamed1,2; Pourteau, Amaury1; Murphy, J. Brendan1,3; Collins, William J.1; Mattielli, Nadine4; Olierook, Hugo K. H.5,6; Spencer, Christopher J.1,7; Mitchell, Ross N.1,8 | |
2020-06-29 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
卷号 | 13期号:7页码:511-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Egypt; Canada; Belgium; Peoples R China |
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. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000544997400013 |
WOS关键词 | LARGE IGNEOUS PROVINCES ; HELIUM-ISOTOPES ; CONTINENTAL BREAKUP ; HE-3/HE-4 RATIOS ; VOLCANIC-ROCKS ; PLUME ; ORIGIN ; SHEAR ; SR ; EVOLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/281801 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Curtin Univ, Sch Earth & Planetary Sci, Earth Dynam Res Grp, TIGeR, Perth, WA, Australia; 2.Tanta Univ, Geol Dept, Fac Sci, Tanta, Egypt; 3.St Francis Xavier Univ, Dept Earth Sci, Antigonish, NS, Canada; 4.Univ Libre Bruxelles, Lab G Time, ULB, Brussels, Belgium; 5.Curtin Univ, Ctr Explorat Targeting Curtin Node, Timescales Mineral Syst, Perth, WA, Australia; 6.Curtin Univ, John Laeter Ctr, Perth, WA, Australia; 7.Queens Univ, Dept Geol Sci & Geol Engn, Kingston, ON, Canada; 8.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China |
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-+. |
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