FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2103182293> ?p ?o ?g. }

• W2103182293 endingPage "1168" @default.
• W2103182293 startingPage "1123" @default.
• W2103182293 abstract "A rare occurrence of a chill sequence in drill core from the eastern Bushveld Complex has been discovered at the base of a thick succession of ultramafic rocks that forms part of the Lower Zone. The lowest 10 m of the section preserves a variety of rock types including a true chill against quartzite floor rock, crystalline quench-textured and spinifex-textured rocks as well as high-temperature olivine and orthopyroxene cumulates. It represents the first stage of magma emplacement into the Bushveld chamber and gives an insight into the nature of the parental magmas to the Bushveld, the processes that took place at that early stage, and how rocks with a high original interstitial liquid content give way to more normal cumulates higher in the section. The chill sequence also provides insight into the variety of rock types that are encountered in marginal sills that are regarded as representing early stage magmas intruded as the chamber developed but that are incompletely understood because of inadequate field exposures. Olivine compositions (up to Mg# 0·912) in a pyroxene dunite in this section are the highest recorded for the Bushveld Complex and cores of associated orthopyroxene have Mg# 0·93. Zoned orthopyroxenes in the quench- and spinifex-textured units range from Mg# 0·91 to 0·72 and preserve core compositions close to the original liquidus. Small single chromite crystals have Cr/(Cr + Al) of 0·85 and Cr/Fe(Total) of three; these are also the most primitive compositions found to date in the Bushveld Complex. The chill and quench zones represent the earliest magmas to be emplaced in the Bushveld Complex; however, these are relatively evolved and similar to the B1 liquid, long assumed to be the most primitive magma that gave rise to the Lower Zone. Major and trace element geochemistry and mineral compositions show that the true parental magmas to the Lower Zone were of komatiite composition, with the most primitive containing 19% MgO. The liquid compositions have a strong crustal signature but are also enriched in K, Rb, Pb and especially Cs and Cl. The olivines in this section are highly Ni enriched, consistent with a component of mantle pyroxenite derived from recycled ocean crust in the source of the parental magmas. It is suggested that this source, combined with PGE-fertile subcontinental lithospheric mantle, was melted within a rising mantle plume and the resultant melts then interacted with the basement rocks of the Kapvaal Craton." @default.
• W2103182293 created "2016-06-24" @default.
• W2103182293 creator A5081568252 @default.
• W2103182293 date "2012-03-29" @default.
• W2103182293 modified "2023-10-11" @default.
• W2103182293 title "A Chill Sequence to the Bushveld Complex: Insight into the First Stage of Emplacement and Implications for the Parental Magmas" @default.
• W2103182293 cites W134457549 @default.
• W2103182293 cites W1507573241 @default.
• W2103182293 cites W1607247829 @default.
• W2103182293 cites W1620200861 @default.
• W2103182293 cites W1674882872 @default.
• W2103182293 cites W1966002492 @default.
• W2103182293 cites W1970811834 @default.
• W2103182293 cites W1972050139 @default.
• W2103182293 cites W1973907979 @default.
• W2103182293 cites W1977954514 @default.
• W2103182293 cites W1987768108 @default.
• W2103182293 cites W1991445735 @default.
• W2103182293 cites W1995161795 @default.
• W2103182293 cites W1997562439 @default.
• W2103182293 cites W2004124272 @default.
• W2103182293 cites W2007060519 @default.
• W2103182293 cites W2009315256 @default.
• W2103182293 cites W2011644126 @default.
• W2103182293 cites W2016792785 @default.
• W2103182293 cites W2019535197 @default.
• W2103182293 cites W2022135249 @default.
• W2103182293 cites W2027795080 @default.
• W2103182293 cites W2029330897 @default.
• W2103182293 cites W2029471637 @default.
• W2103182293 cites W2041130421 @default.
• W2103182293 cites W2042692134 @default.
• W2103182293 cites W2042830802 @default.
• W2103182293 cites W2043819754 @default.
• W2103182293 cites W2043858309 @default.
• W2103182293 cites W2047050638 @default.
• W2103182293 cites W2048470503 @default.
• W2103182293 cites W2053994487 @default.
• W2103182293 cites W2054336385 @default.
• W2103182293 cites W2054454448 @default.
• W2103182293 cites W2055859870 @default.
• W2103182293 cites W2065621980 @default.
• W2103182293 cites W2068250266 @default.
• W2103182293 cites W2075150574 @default.
• W2103182293 cites W2076755830 @default.
• W2103182293 cites W2082192342 @default.
• W2103182293 cites W2082944461 @default.
• W2103182293 cites W2083227715 @default.
• W2103182293 cites W2086540936 @default.
• W2103182293 cites W2087799477 @default.
• W2103182293 cites W2091316274 @default.
• W2103182293 cites W2093375472 @default.
• W2103182293 cites W2101303966 @default.
• W2103182293 cites W2111672926 @default.
• W2103182293 cites W2129051699 @default.
• W2103182293 cites W2129370976 @default.
• W2103182293 cites W2130794152 @default.
• W2103182293 cites W2133332722 @default.
• W2103182293 cites W2136499692 @default.
• W2103182293 cites W2140914999 @default.
• W2103182293 cites W2143104630 @default.
• W2103182293 cites W2151041036 @default.
• W2103182293 cites W2160368579 @default.
• W2103182293 cites W2161866809 @default.
• W2103182293 cites W2163549237 @default.
• W2103182293 cites W2169795919 @default.
• W2103182293 cites W2169962399 @default.
• W2103182293 cites W2169984600 @default.
• W2103182293 cites W2170380709 @default.
• W2103182293 cites W2335043079 @default.
• W2103182293 cites W2886385614 @default.
• W2103182293 cites W4214911971 @default.
• W2103182293 cites W934454749 @default.
• W2103182293 doi "https://doi.org/10.1093/petrology/egs011" @default.
• W2103182293 hasPublicationYear "2012" @default.
• W2103182293 type Work @default.
• W2103182293 sameAs 2103182293 @default.
• W2103182293 citedByCount "139" @default.
• W2103182293 countsByYear W21031822932012 @default.
• W2103182293 countsByYear W21031822932013 @default.
• W2103182293 countsByYear W21031822932014 @default.
• W2103182293 countsByYear W21031822932015 @default.
• W2103182293 countsByYear W21031822932016 @default.
• W2103182293 countsByYear W21031822932017 @default.
• W2103182293 countsByYear W21031822932018 @default.
• W2103182293 countsByYear W21031822932019 @default.
• W2103182293 countsByYear W21031822932020 @default.
• W2103182293 countsByYear W21031822932021 @default.
• W2103182293 countsByYear W21031822932022 @default.
• W2103182293 countsByYear W21031822932023 @default.
• W2103182293 crossrefType "journal-article" @default.
• W2103182293 hasAuthorship W2103182293A5081568252 @default.
• W2103182293 hasBestOaLocation W21031822931 @default.
• W2103182293 hasConcept C127313418 @default.
• W2103182293 hasConcept C146357865 @default.
• W2103182293 hasConcept C151730666 @default.
• W2103182293 hasConcept C17409809 @default.
• W2103182293 hasConcept C1965285 @default.

• next