FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3157236880> ?p ?o ?g. }

• W3157236880 endingPage "116973" @default.
• W3157236880 startingPage "116973" @default.
• W3157236880 abstract "Calcium silicate perovskite and bridgmanite are two phases believed to coexist throughout the lower mantle, which at some temperature, at least theoretically, dissolve into each other to form a single perovskite solid solution (CaxMg1−xSiO3). This may have large seismic and geochemical implications due to the changes in density, elasticity and element partition coefficients between single and mixed phase perovskites. DFT Molecular Dynamics has been used to estimate the miscibility of bridgmanite and calcium perovskite at pressures between 25 and 125 GPa. At 125 GPa (where mixing is the greatest in our pressure range) to mix 1% of Ca-pv into bridgmanite requires a temperature of 2042 K, 5% 2588 K, 10% 2675 K and 50% 2743 K. Therefore, in a simplified lower mantle chemistry an extensive MgSiO3–CaSiO3 solid solution is not expected to occur. However, a simple model was employed to test whether the presence of other elements might influence this mutual solid solution and it was demonstrated that if sufficient concentrations (>1 at.%) of additional elements are present then miscibility may become favourable. Of the elements likely to be present at these concentrations it appears that ferrous iron promotes, whilst aluminium inhibits, a single-phase perovskite solid solution. To a lesser extent ferric iron may both increase and decrease perovskite miscibility. Modelling for realistic mantle compositions suggests that basaltic lithologies will always retain two perovskite components, whereas a single perovskite solid solution may be preferred in hot and/or iron-rich pyrolytic bulk compositions near the base of the lower mantle. Static calculations indicate perovskite miscibility may cause pyrolytic lithologies (with 12.5% CaSiO3) to possess lower density (−0.14–0.25%), Vs (−1.5–3.5%) and Vp (−0.5–1.2%), and higher VΦ (+ 0.00–0.75%) than predicted for assemblages containing two perovskites. These seismic changes, while preliminary, are similar to those observed in the LLSVPs which are also regions that are likely hotter than the surrounding mantle and thus possess conditions promoting the formation of a single perovskite phase." @default.
• W3157236880 created "2021-05-10" @default.
• W3157236880 creator A5016898390 @default.
• W3157236880 creator A5032089585 @default.
• W3157236880 creator A5033499131 @default.
• W3157236880 date "2021-07-01" @default.
• W3157236880 modified "2023-10-09" @default.
• W3157236880 title "The miscibility of calcium silicate perovskite and bridgmanite: A single perovskite solid solution in hot, iron-rich regions" @default.
• W3157236880 cites W1483453932 @default.
• W3157236880 cites W1801018691 @default.
• W3157236880 cites W1972502872 @default.
• W3157236880 cites W1972751757 @default.
• W3157236880 cites W1975863035 @default.
• W3157236880 cites W1979544533 @default.
• W3157236880 cites W1984076722 @default.
• W3157236880 cites W1984485003 @default.
• W3157236880 cites W1987848866 @default.
• W3157236880 cites W1987992681 @default.
• W3157236880 cites W1992827985 @default.
• W3157236880 cites W2000614548 @default.
• W3157236880 cites W2007395042 @default.
• W3157236880 cites W2013338340 @default.
• W3157236880 cites W2016168218 @default.
• W3157236880 cites W2021323803 @default.
• W3157236880 cites W2029250113 @default.
• W3157236880 cites W2029781446 @default.
• W3157236880 cites W2031465369 @default.
• W3157236880 cites W2033475486 @default.
• W3157236880 cites W2036113194 @default.
• W3157236880 cites W2047125852 @default.
• W3157236880 cites W2048649363 @default.
• W3157236880 cites W2061848266 @default.
• W3157236880 cites W2068135009 @default.
• W3157236880 cites W2069253963 @default.
• W3157236880 cites W2074176021 @default.
• W3157236880 cites W2078049735 @default.
• W3157236880 cites W2083222334 @default.
• W3157236880 cites W2093588474 @default.
• W3157236880 cites W2093599820 @default.
• W3157236880 cites W2095440947 @default.
• W3157236880 cites W2100359096 @default.
• W3157236880 cites W2104547566 @default.
• W3157236880 cites W2124618519 @default.
• W3157236880 cites W2149403899 @default.
• W3157236880 cites W2155009382 @default.
• W3157236880 cites W2159013124 @default.
• W3157236880 cites W2162530135 @default.
• W3157236880 cites W2185045197 @default.
• W3157236880 cites W2284331298 @default.
• W3157236880 cites W2335773291 @default.
• W3157236880 cites W2404281971 @default.
• W3157236880 cites W2483162754 @default.
• W3157236880 cites W2614329465 @default.
• W3157236880 cites W2623824632 @default.
• W3157236880 cites W2767227666 @default.
• W3157236880 cites W2802821282 @default.
• W3157236880 cites W2887649443 @default.
• W3157236880 cites W2968655733 @default.
• W3157236880 cites W3017082821 @default.
• W3157236880 cites W3048584373 @default.
• W3157236880 cites W3090689927 @default.
• W3157236880 cites W3121382953 @default.
• W3157236880 cites W4254612285 @default.
• W3157236880 cites W4301431994 @default.
• W3157236880 doi "https://doi.org/10.1016/j.epsl.2021.116973" @default.
• W3157236880 hasPublicationYear "2021" @default.
• W3157236880 type Work @default.
• W3157236880 sameAs 3157236880 @default.
• W3157236880 citedByCount "3" @default.
• W3157236880 countsByYear W31572368802022 @default.
• W3157236880 crossrefType "journal-article" @default.
• W3157236880 hasAuthorship W3157236880A5016898390 @default.
• W3157236880 hasAuthorship W3157236880A5032089585 @default.
• W3157236880 hasAuthorship W3157236880A5033499131 @default.
• W3157236880 hasBestOaLocation W31572368802 @default.
• W3157236880 hasConcept C110884469 @default.
• W3157236880 hasConcept C113196181 @default.
• W3157236880 hasConcept C121332964 @default.
• W3157236880 hasConcept C127313418 @default.
• W3157236880 hasConcept C138999460 @default.
• W3157236880 hasConcept C155011858 @default.
• W3157236880 hasConcept C159985019 @default.
• W3157236880 hasConcept C160804572 @default.
• W3157236880 hasConcept C17409809 @default.
• W3157236880 hasConcept C178790620 @default.
• W3157236880 hasConcept C185592680 @default.
• W3157236880 hasConcept C191897082 @default.
• W3157236880 hasConcept C192562407 @default.
• W3157236880 hasConcept C199289684 @default.
• W3157236880 hasConcept C2777335606 @default.
• W3157236880 hasConcept C29234059 @default.
• W3157236880 hasConcept C43617362 @default.
• W3157236880 hasConcept C44280652 @default.
• W3157236880 hasConcept C521977710 @default.
• W3157236880 hasConcept C67236022 @default.
• W3157236880 hasConcept C8010536 @default.
• W3157236880 hasConcept C8898347 @default.
• W3157236880 hasConcept C97355855 @default.

• next