Matches in SemOpenAlex for { <https://semopenalex.org/work/W2061848266> ?p ?o ?g. }
- W2061848266 endingPage "251" @default.
- W2061848266 startingPage "239" @default.
- W2061848266 abstract "Phase relations, mineral chemistry, and density of a natural mid-oceanic ridge basalt (MORB) composition were investigated up to 134 GPa and 2300 K by a combination of in-situ X-ray diffraction measurements and chemical analyses using transmission electron microscope (TEM). Results demonstrate that the MORB composition consists of MgSiO3-rich perovskite, stishovite, CaSiO3 perovskite, and CaFe2O4-type Al-phase in the upper part of the lower mantle. The most abundant mineral of MgSiO3-rich perovskite undergoes phase transition to a CaIrO3-type post-perovskite phase above 110 GPa and 2500 K. Post-perovskite phase is similar in composition to perovskite except considerably high Na2O content. Stishovite transforms to CaCl2-type SiO2 phase above 62 GPa and 2000 K and further to α-PbO2-type phase above 110 GPa. α-PbO2-type SiO2 phase includes large amount of Al2O3, which significantly expands its stability relative to CaCl2-type phase. Phase transition of CaSiO3 perovskite from tetragonal to cubic was also observed with increasing temperature. CaFe2O4-type Al-phase is stable to the bottom of the mantle. The density of MORB crust was calculated using volume data, combining with measured chemical compositions and calculated mineral proportions. The former MORB crust is denser than the average lower mantle at all depths greater than ∼ 720 km, contrary to earlier predictions. The subducted basaltic crust may have accumulated at the base of the mantle." @default.
- W2061848266 created "2016-06-24" @default.
- W2061848266 creator A5008295976 @default.
- W2061848266 creator A5067258783 @default.
- W2061848266 creator A5080013742 @default.
- W2061848266 creator A5083390166 @default.
- W2061848266 date "2005-08-01" @default.
- W2061848266 modified "2023-10-07" @default.
- W2061848266 title "Phase transition and density of subducted MORB crust in the lower mantle" @default.
- W2061848266 cites W141037883 @default.
- W2061848266 cites W1483453932 @default.
- W2061848266 cites W1537004772 @default.
- W2061848266 cites W1569788917 @default.
- W2061848266 cites W1851489238 @default.
- W2061848266 cites W1966410987 @default.
- W2061848266 cites W1968157523 @default.
- W2061848266 cites W1970101802 @default.
- W2061848266 cites W1972502872 @default.
- W2061848266 cites W1983679738 @default.
- W2061848266 cites W1984800782 @default.
- W2061848266 cites W1994467505 @default.
- W2061848266 cites W1998718818 @default.
- W2061848266 cites W2001139726 @default.
- W2061848266 cites W2005425146 @default.
- W2061848266 cites W2010956256 @default.
- W2061848266 cites W2013034894 @default.
- W2061848266 cites W2024713960 @default.
- W2061848266 cites W2025900742 @default.
- W2061848266 cites W2028901741 @default.
- W2061848266 cites W2029781446 @default.
- W2061848266 cites W2031407346 @default.
- W2061848266 cites W2033475486 @default.
- W2061848266 cites W2035390247 @default.
- W2061848266 cites W2037703649 @default.
- W2061848266 cites W2062221814 @default.
- W2061848266 cites W2068135009 @default.
- W2061848266 cites W2073355734 @default.
- W2061848266 cites W2079078473 @default.
- W2061848266 cites W2084544096 @default.
- W2061848266 cites W2088449324 @default.
- W2061848266 cites W2095440947 @default.
- W2061848266 cites W2097706794 @default.
- W2061848266 cites W2103268779 @default.
- W2061848266 cites W2112472760 @default.
- W2061848266 cites W2114546253 @default.
- W2061848266 cites W2116985847 @default.
- W2061848266 cites W2121991458 @default.
- W2061848266 cites W2152972241 @default.
- W2061848266 cites W2161028249 @default.
- W2061848266 cites W2167471676 @default.
- W2061848266 cites W2168218609 @default.
- W2061848266 cites W2308905843 @default.
- W2061848266 doi "https://doi.org/10.1016/j.epsl.2005.06.035" @default.
- W2061848266 hasPublicationYear "2005" @default.
- W2061848266 type Work @default.
- W2061848266 sameAs 2061848266 @default.
- W2061848266 citedByCount "277" @default.
- W2061848266 countsByYear W20618482662012 @default.
- W2061848266 countsByYear W20618482662013 @default.
- W2061848266 countsByYear W20618482662014 @default.
- W2061848266 countsByYear W20618482662015 @default.
- W2061848266 countsByYear W20618482662016 @default.
- W2061848266 countsByYear W20618482662017 @default.
- W2061848266 countsByYear W20618482662018 @default.
- W2061848266 countsByYear W20618482662019 @default.
- W2061848266 countsByYear W20618482662020 @default.
- W2061848266 countsByYear W20618482662021 @default.
- W2061848266 countsByYear W20618482662022 @default.
- W2061848266 countsByYear W20618482662023 @default.
- W2061848266 crossrefType "journal-article" @default.
- W2061848266 hasAuthorship W2061848266A5008295976 @default.
- W2061848266 hasAuthorship W2061848266A5067258783 @default.
- W2061848266 hasAuthorship W2061848266A5080013742 @default.
- W2061848266 hasAuthorship W2061848266A5083390166 @default.
- W2061848266 hasConcept C127313418 @default.
- W2061848266 hasConcept C151730666 @default.
- W2061848266 hasConcept C154200439 @default.
- W2061848266 hasConcept C155011858 @default.
- W2061848266 hasConcept C161509811 @default.
- W2061848266 hasConcept C170751736 @default.
- W2061848266 hasConcept C17409809 @default.
- W2061848266 hasConcept C178790620 @default.
- W2061848266 hasConcept C185592680 @default.
- W2061848266 hasConcept C199289684 @default.
- W2061848266 hasConcept C2776698055 @default.
- W2061848266 hasConcept C2779870107 @default.
- W2061848266 hasConcept C2780942940 @default.
- W2061848266 hasConcept C44280652 @default.
- W2061848266 hasConcept C58097730 @default.
- W2061848266 hasConcept C67236022 @default.
- W2061848266 hasConcept C77928131 @default.
- W2061848266 hasConcept C8010536 @default.
- W2061848266 hasConcept C8898347 @default.
- W2061848266 hasConceptScore W2061848266C127313418 @default.
- W2061848266 hasConceptScore W2061848266C151730666 @default.
- W2061848266 hasConceptScore W2061848266C154200439 @default.
- W2061848266 hasConceptScore W2061848266C155011858 @default.
- W2061848266 hasConceptScore W2061848266C161509811 @default.