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• W4213426236 endingPage "261" @default.
• W4213426236 startingPage "240" @default.
• W4213426236 abstract "Alkaline basalts occur widely in intraplate settings and carbonate-bearing mantle sources such as carbonated peridotites are increasingly regarded to play a key role in their formation. Carbonated eclogites, most likely the products of subducted carbonate-bearing altered oceanic crust, are probable alternative ingredients in the mantle sources of many intraplate alkaline basalts, highlighting the importance of the subduction-driven deep carbon cycle. However, this widely proposed hypothesis remains enigmatic because the recognition of low-MgO primitive alkaline basalts predicted by experiments is scarce. Here we show that Cenozoic continental intraplate alkaline basalts occurring above the stagnant oceanic slab in the mantle transition zone beneath the Hannuoba region, eastern China, display geochemical features consistent with their origin as low-degree partial melts of carbonate-bearing eclogites. Their MgO contents correlate positively with CaO, Ba/Th and Ti/Eu, but negatively with Dy/Yb and εNd. Remarkably, the most primitive alkaline basalts are characterized by low MgO (<5.25 wt.%), low heavy rare earth elements and Sc contents, low CaO/Al2O3 (<0.41), low Ti/Eu (<3380), but Dy/Yb (>7.1) higher than those of ocean island basalts (OIBs). These features cannot be ascribed to differentiation from high-MgO alkaline basalts because significant amounts of crystallization of clinopyroxene and garnet did not occur during ascent. Differentiation also cannot account for the correlations of time-integrated Sr-Nd isotopes with MgO, Dy/Yb and Ba/Th. Instead, the linear correlations mainly reflect strong interaction between ascending primitive alkaline melts and the lithospheric mantle. The compositions of primitive alkaline basalts reflect the key control of garnet and clinopyroxene in the mantle residue (eclogites), and the Ti, Zr and Hf anomalies further indicate the critical effect of carbonates in the eclogite source. Partial melting of the carbonate-bearing eclogites likely occurred in the uppermost asthenosphere. The production of alkaline basalts with low MgO contents by partial melting of carbonate-bearing eclogite below the peridotite solidus in an intraplate setting has been overlooked and the magmas were instead often considered to be highly evolved. Recycled altered oceanic crust thus may not only cause metasomatism of the deep mantle but may also serve as a direct source of mafic melts. These results on natural rocks support the experiment-based model for subducted altered oceanic crustal material and also indicate its diverse fate in the mantle." @default.
• W4213426236 created "2022-02-25" @default.
• W4213426236 creator A5006015317 @default.
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• W4213426236 creator A5084263315 @default.
• W4213426236 date "2022-05-01" @default.
• W4213426236 modified "2023-10-12" @default.
• W4213426236 title "Origin of low-MgO primitive intraplate alkaline basalts from partial melting of carbonate-bearing eclogite sources" @default.
• W4213426236 cites W1562200705 @default.
• W4213426236 cites W1656874552 @default.
• W4213426236 cites W1688191693 @default.
• W4213426236 cites W1828329906 @default.
• W4213426236 cites W1879999282 @default.
• W4213426236 cites W1893068022 @default.
• W4213426236 cites W192043380 @default.
• W4213426236 cites W1966278336 @default.
• W4213426236 cites W1966693672 @default.
• W4213426236 cites W1968839333 @default.
• W4213426236 cites W1969262711 @default.
• W4213426236 cites W1969859799 @default.
• W4213426236 cites W1974731988 @default.
• W4213426236 cites W1974882281 @default.
• W4213426236 cites W1979529097 @default.
• W4213426236 cites W1979910717 @default.
• W4213426236 cites W1980419960 @default.
• W4213426236 cites W1981483059 @default.
• W4213426236 cites W1981883491 @default.
• W4213426236 cites W1983316554 @default.
• W4213426236 cites W1983545647 @default.
• W4213426236 cites W1983891732 @default.
• W4213426236 cites W1984045107 @default.
• W4213426236 cites W1988488782 @default.
• W4213426236 cites W1990972736 @default.
• W4213426236 cites W1991732676 @default.
• W4213426236 cites W1995878469 @default.
• W4213426236 cites W1996207484 @default.
• W4213426236 cites W1997310688 @default.
• W4213426236 cites W1997668544 @default.
• W4213426236 cites W2001875090 @default.
• W4213426236 cites W2002271865 @default.
• W4213426236 cites W2005647481 @default.
• W4213426236 cites W2007192582 @default.
• W4213426236 cites W2007490418 @default.
• W4213426236 cites W2008782416 @default.
• W4213426236 cites W2009901659 @default.
• W4213426236 cites W2011607179 @default.
• W4213426236 cites W2011822856 @default.
• W4213426236 cites W2015697995 @default.
• W4213426236 cites W2017755745 @default.
• W4213426236 cites W2018282154 @default.
• W4213426236 cites W2019866022 @default.
• W4213426236 cites W2024141736 @default.
• W4213426236 cites W2025671512 @default.
• W4213426236 cites W2026397963 @default.
• W4213426236 cites W2027862110 @default.
• W4213426236 cites W2028386031 @default.
• W4213426236 cites W2031120397 @default.
• W4213426236 cites W2034411808 @default.
• W4213426236 cites W2035283420 @default.
• W4213426236 cites W2035562754 @default.
• W4213426236 cites W2035686077 @default.
• W4213426236 cites W2035786208 @default.
• W4213426236 cites W2035790992 @default.
• W4213426236 cites W2038338796 @default.
• W4213426236 cites W2038707767 @default.
• W4213426236 cites W2038979071 @default.
• W4213426236 cites W2042832983 @default.
• W4213426236 cites W2043466950 @default.
• W4213426236 cites W2045339936 @default.
• W4213426236 cites W2045825112 @default.
• W4213426236 cites W2046897746 @default.
• W4213426236 cites W2047121008 @default.
• W4213426236 cites W2048434764 @default.
• W4213426236 cites W2049044264 @default.
• W4213426236 cites W2052473341 @default.
• W4213426236 cites W2055859870 @default.
• W4213426236 cites W2059416609 @default.
• W4213426236 cites W2064223528 @default.
• W4213426236 cites W2067173167 @default.
• W4213426236 cites W2067203284 @default.
• W4213426236 cites W2067336738 @default.
• W4213426236 cites W2069053606 @default.
• W4213426236 cites W2077430827 @default.
• W4213426236 cites W2081958168 @default.
• W4213426236 cites W2082667528 @default.
• W4213426236 cites W2083784240 @default.
• W4213426236 cites W2083844863 @default.
• W4213426236 cites W2084285443 @default.
• W4213426236 cites W2087320324 @default.
• W4213426236 cites W2089571445 @default.
• W4213426236 cites W2094663134 @default.
• W4213426236 cites W2100995592 @default.
• W4213426236 cites W2101303966 @default.
• W4213426236 cites W2101476315 @default.

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