FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4205657132> ?p ?o ?g. }

• W4205657132 endingPage "106530" @default.
• W4205657132 startingPage "106530" @default.
• W4205657132 abstract "The Napier Complex of Enderby Land and Kemp Land is a unique part of the Eastern Antarctic Shield, as it preserves history of crustal growth extending from the Eo- to Neoarchean. It is composed mainly of enderbitic and charnockitic gneisses and granulites metamorphosed at ca. 2.5 Ga, and locally at ca. 2.8 Ga, under high- to ultra-high temperature conditions. These events have been well-characterized in the central and western parts of the complex; however, the south-southwestern region has been little studied. Samples from the southern Scott and Raggatt Mountains were selected for zircon U-Pb dating by Secondary Ion Mass Spectrometry and whole-rock geochemical analysis. Tonalitic gneiss from the Raggatt Mountains and trondhjemitic gneiss from the southern Scott Mountains have protolith ages of 2711 ± 5 Ma and 2726 ± 6 Ma, respectively. In contrast, tonalitic samples from the southern Scott Mountains have protolith ages of ca. 2539 ± 5, 2533 ± 5 and 2522 ± 9 Ma. The younger generation of magmatism overlaps the timing of metamorphic zircon growth between 2540 and 2440 Ma observed in this study. The geochemistry of ca. 2720 Ma gneisses indicates that magmatism was generated by medium-pressure melting (>1.5 GPa) of basaltic crust, whereas ca. 2530 Ma magmas were generated at lower pressures (<1.2 GPa). The ca. 2.7 Ga magmatism may be associated with continental crust formed at 2.8 Ga, or be newly formed crust that was assembled with older prior to or during a tectonometamorphic event at ca. 2.5 Ga. Tonalitic magmatism at 2.53 Ga during the first half of the 2585–2420 Ma metamorphic event may be a product of partial melting during high-grade metamorphism. Although protolith ages across the complex are still scarce, differences between regions raise the possibility that the complex contains crustal domains of different ages and origins that may not have been assembled until the ca. 2.5 Ga tectonothermal event." @default.
• W4205657132 created "2022-01-25" @default.
• W4205657132 creator A5003442252 @default.
• W4205657132 creator A5013925454 @default.
• W4205657132 creator A5023689051 @default.
• W4205657132 creator A5040017926 @default.
• W4205657132 creator A5054716335 @default.
• W4205657132 creator A5057864634 @default.
• W4205657132 creator A5083387796 @default.
• W4205657132 creator A5088933277 @default.
• W4205657132 date "2022-03-01" @default.
• W4205657132 modified "2023-10-02" @default.
• W4205657132 title "Neoarchean magmatism in the southern Scott and Raggatt Mountains, Napier Complex, east Antarctica" @default.
• W4205657132 cites W1521262137 @default.
• W4205657132 cites W1964502745 @default.
• W4205657132 cites W1964617878 @default.
• W4205657132 cites W1964826145 @default.
• W4205657132 cites W1968371888 @default.
• W4205657132 cites W1970697513 @default.
• W4205657132 cites W1973629533 @default.
• W4205657132 cites W1974234373 @default.
• W4205657132 cites W1979705656 @default.
• W4205657132 cites W1982240637 @default.
• W4205657132 cites W1985842438 @default.
• W4205657132 cites W1988497895 @default.
• W4205657132 cites W2003546631 @default.
• W4205657132 cites W2007105153 @default.
• W4205657132 cites W2007774322 @default.
• W4205657132 cites W2008691821 @default.
• W4205657132 cites W2010544255 @default.
• W4205657132 cites W2014760701 @default.
• W4205657132 cites W2019034794 @default.
• W4205657132 cites W2024179102 @default.
• W4205657132 cites W2024549725 @default.
• W4205657132 cites W2024589404 @default.
• W4205657132 cites W2024600575 @default.
• W4205657132 cites W2026412695 @default.
• W4205657132 cites W2029370166 @default.
• W4205657132 cites W2031345413 @default.
• W4205657132 cites W2032975395 @default.
• W4205657132 cites W2036174339 @default.
• W4205657132 cites W2037145527 @default.
• W4205657132 cites W2037618727 @default.
• W4205657132 cites W2039872199 @default.
• W4205657132 cites W2044455233 @default.
• W4205657132 cites W2047151621 @default.
• W4205657132 cites W2047770336 @default.
• W4205657132 cites W2053721096 @default.
• W4205657132 cites W2055172418 @default.
• W4205657132 cites W2057014915 @default.
• W4205657132 cites W2061779960 @default.
• W4205657132 cites W2069865961 @default.
• W4205657132 cites W2069868106 @default.
• W4205657132 cites W2071904071 @default.
• W4205657132 cites W2072620570 @default.
• W4205657132 cites W2073455571 @default.
• W4205657132 cites W2077649405 @default.
• W4205657132 cites W2082360769 @default.
• W4205657132 cites W2085596423 @default.
• W4205657132 cites W2088816309 @default.
• W4205657132 cites W2094496505 @default.
• W4205657132 cites W2099168664 @default.
• W4205657132 cites W2103193636 @default.
• W4205657132 cites W2104961574 @default.
• W4205657132 cites W2112634543 @default.
• W4205657132 cites W2113009765 @default.
• W4205657132 cites W2114336143 @default.
• W4205657132 cites W2120966991 @default.
• W4205657132 cites W2121851712 @default.
• W4205657132 cites W2122773833 @default.
• W4205657132 cites W2127940040 @default.
• W4205657132 cites W2133940745 @default.
• W4205657132 cites W2139549235 @default.
• W4205657132 cites W2156244279 @default.
• W4205657132 cites W2164983848 @default.
• W4205657132 cites W2170492879 @default.
• W4205657132 cites W2266446818 @default.
• W4205657132 cites W2330876288 @default.
• W4205657132 cites W2345426871 @default.
• W4205657132 cites W2472168361 @default.
• W4205657132 cites W2536947691 @default.
• W4205657132 cites W2559888658 @default.
• W4205657132 cites W2593745577 @default.
• W4205657132 cites W2614937491 @default.
• W4205657132 cites W2619277305 @default.
• W4205657132 cites W2778830623 @default.
• W4205657132 cites W2790655828 @default.
• W4205657132 cites W2806261979 @default.
• W4205657132 cites W2891361387 @default.
• W4205657132 cites W2914753986 @default.
• W4205657132 cites W2971996196 @default.
• W4205657132 cites W2986586858 @default.
• W4205657132 cites W2992642828 @default.
• W4205657132 cites W2995854049 @default.
• W4205657132 cites W2996301100 @default.
• W4205657132 cites W3004020191 @default.
• W4205657132 cites W3082701246 @default.
• W4205657132 cites W3094073634 @default.

• next