Matches in SemOpenAlex for { <https://semopenalex.org/work/W1631218094> ?p ?o ?g. }
- W1631218094 endingPage "n/a" @default.
- W1631218094 startingPage "n/a" @default.
- W1631218094 abstract "Combined Pb-Sr-Nd-Hf-Os isotopes, together with major and trace element compositions, were determined from clinopyroxene and olivine phenocrysts, along with whole rocks, for ocean island basalts with high μ (μ = 238U/204Pb) (HIMU) and enriched mantle isotopic characteristics from Cook-Austral Islands. Clinopyroxene and olivine separates record reliable isotopic information of the sources because of minimized in situ radiogenic ingrowth and their lower susceptibility to crustal contamination. Coherent isotopic systematics in multi-isotope spaces defined by the HIMU samples are best explained by recent mixing of melts derived from the HIMU reservoir and the local shallow mantle. The isotopic compositions of the HIMU reservoir are constrained to be low ɛNd (≤+4), low ɛHf (≤+3), and moderately radiogenic 187Os/188Os (0.14–0.15) in association with radiogenic Pb isotopes (206Pb/204Pb ≥ 21.5). Since ancient oceanic crust would have had exceptionally radiogenic 187Os/188Os, moderately high 187Os/188Os precludes recycled oceanic crust as the only contributor to the HIMU reservoir. Instead, mantle metasomatized with partial melts from subducted oceanic crust is a likely candidate for the HIMU reservoir. Moreover, partial melting of oceanic crust in equilibrium with Mg perovskite would fractionate U/Pb, Sm/Nd, and Lu/Hf, which are in accordance with the time-integrated U/Pb, Sm/Nd, and Lu/Hf deduced from Pb, Nd, and Hf isotopic compositions of the HIMU reservoir, respectively, with a formation age of 2–3 Ga. We thus propose that the HIMU reservoir was formed by hybridization of a subducted oceanic crust-derived melt with the ambient mantle and then stored for several billion years in the lower mantle." @default.
- W1631218094 created "2016-06-24" @default.
- W1631218094 creator A5008927496 @default.
- W1631218094 creator A5020613096 @default.
- W1631218094 creator A5027295348 @default.
- W1631218094 creator A5034483368 @default.
- W1631218094 creator A5038058053 @default.
- W1631218094 creator A5044223850 @default.
- W1631218094 creator A5065468368 @default.
- W1631218094 creator A5073187199 @default.
- W1631218094 creator A5075485324 @default.
- W1631218094 creator A5081358924 @default.
- W1631218094 creator A5084546521 @default.
- W1631218094 date "2011-02-01" @default.
- W1631218094 modified "2023-10-18" @default.
- W1631218094 title "Geochemical characteristics and origin of the HIMU reservoir: A possible mantle plume source in the lower mantle" @default.
- W1631218094 cites W1485388173 @default.
- W1631218094 cites W1501054080 @default.
- W1631218094 cites W1505998443 @default.
- W1631218094 cites W1534749586 @default.
- W1631218094 cites W1545457404 @default.
- W1631218094 cites W1578122124 @default.
- W1631218094 cites W1587633009 @default.
- W1631218094 cites W1591111050 @default.
- W1631218094 cites W1610512145 @default.
- W1631218094 cites W1656874552 @default.
- W1631218094 cites W1669347305 @default.
- W1631218094 cites W1914890451 @default.
- W1631218094 cites W1933179636 @default.
- W1631218094 cites W1941456882 @default.
- W1631218094 cites W1964927447 @default.
- W1631218094 cites W1969859799 @default.
- W1631218094 cites W1970101802 @default.
- W1631218094 cites W1971515643 @default.
- W1631218094 cites W1972065353 @default.
- W1631218094 cites W1974231715 @default.
- W1631218094 cites W1974731988 @default.
- W1631218094 cites W1974767465 @default.
- W1631218094 cites W1975777679 @default.
- W1631218094 cites W1976818998 @default.
- W1631218094 cites W1977862195 @default.
- W1631218094 cites W1979214544 @default.
- W1631218094 cites W1980477764 @default.
- W1631218094 cites W1981328102 @default.
- W1631218094 cites W1981378138 @default.
- W1631218094 cites W1982386973 @default.
- W1631218094 cites W1982927349 @default.
- W1631218094 cites W1984800782 @default.
- W1631218094 cites W1985531665 @default.
- W1631218094 cites W1987216331 @default.
- W1631218094 cites W1987848866 @default.
- W1631218094 cites W1987907556 @default.
- W1631218094 cites W1988708839 @default.
- W1631218094 cites W1989925842 @default.
- W1631218094 cites W1992093237 @default.
- W1631218094 cites W1996202067 @default.
- W1631218094 cites W2001360260 @default.
- W1631218094 cites W2003142147 @default.
- W1631218094 cites W2004328002 @default.
- W1631218094 cites W2004474671 @default.
- W1631218094 cites W2006238242 @default.
- W1631218094 cites W2006694921 @default.
- W1631218094 cites W2006708407 @default.
- W1631218094 cites W2008373173 @default.
- W1631218094 cites W2009544440 @default.
- W1631218094 cites W2015396785 @default.
- W1631218094 cites W2017420294 @default.
- W1631218094 cites W2020187485 @default.
- W1631218094 cites W2020304604 @default.
- W1631218094 cites W2023340053 @default.
- W1631218094 cites W2026722663 @default.
- W1631218094 cites W2028446699 @default.
- W1631218094 cites W2028824915 @default.
- W1631218094 cites W2029497855 @default.
- W1631218094 cites W2031407346 @default.
- W1631218094 cites W2033475486 @default.
- W1631218094 cites W2034098960 @default.
- W1631218094 cites W2035283420 @default.
- W1631218094 cites W2036918185 @default.
- W1631218094 cites W2037703649 @default.
- W1631218094 cites W2038707767 @default.
- W1631218094 cites W2038979071 @default.
- W1631218094 cites W2041911594 @default.
- W1631218094 cites W2047567126 @default.
- W1631218094 cites W2049044264 @default.
- W1631218094 cites W2049454394 @default.
- W1631218094 cites W2050130236 @default.
- W1631218094 cites W2050189782 @default.
- W1631218094 cites W2054661008 @default.
- W1631218094 cites W2055510772 @default.
- W1631218094 cites W2056122128 @default.
- W1631218094 cites W2058396253 @default.
- W1631218094 cites W2060558586 @default.
- W1631218094 cites W2061848266 @default.
- W1631218094 cites W2068008468 @default.
- W1631218094 cites W2068464003 @default.
- W1631218094 cites W2070259366 @default.
- W1631218094 cites W2070491486 @default.