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• W2079246427 endingPage "88" @default.
• W2079246427 startingPage "69" @default.
• W2079246427 abstract "Nephelinites and phonolites from the Moroccan Anti-Atlas form a cogenetic series of volcanic rocks linked by a fractional crystallization process and showing continuous evolutionary trends for trace-elements. According to partial melting calculations, minor element data in olivine and review of published experimental studies, the most primitive nephelinites are low degree (~ 2%) partial melts from a carbonated LREE-rich spinel lherzolite. Sr–Nd–Pb isotopic compositions indicate the participation of both DM and HIMU end-members in the mantle source of nephelinites; the HIMU component is here interpreted as a relic of the shallow metasomatized Pan-African mantle. The phonolites show similar isotopic composition except for slightly more radiogenic Sr isotopic values. Fractional crystallization calculations were performed using trace-element mineral/bulk rock coefficients determined with new LA-ICP-MS data on minerals together with published equilibrium partition coefficients. The decrease of LREE, Sr and Ba with increasing differentiation is explained by fractionation of large amounts of apatite. Th, Nb and Zr display a behavior of very incompatible elements, reaching extreme concentration in most differentiated phonolites. Ta, Hf and MREE by contrast are characterized by a moderately incompatible to compatible behavior during differentiation. Fractionation of small amount of titanite, in which Ta, Hf and MREE are highly compatible compared to Nb, Zr and LREE (DNb/DTa: 2, DZr/DHf: 1.5 for titanite/phonolite ratios), explains the observed increase in Nb/Ta and Zr/Hf ratios with increasing silica content, from 18 and 40 in nephelinites to 70 and 80 in phonolites, respectively. Clinopyroxene also contributed to the fractionation of Hf from Zr in the very first steps of crystallization. The low values of Nb/Ta and Zr/Hf ratios observed in the two most differentiated Si-rich phonolites are probably a consequence of late stage segregation of volatile-rich agpaitic assemblages in the underlying magma chamber. Two phonolites with extreme Sr contents plot outside fractionation trends, as a result of the remelting of previously crystallized nephelinitic rocks in depth." @default.
• W2079246427 created "2016-06-24" @default.
• W2079246427 creator A5049639227 @default.
• W2079246427 creator A5084594935 @default.
• W2079246427 creator A5087424317 @default.
• W2079246427 date "2014-12-01" @default.
• W2079246427 modified "2023-10-17" @default.
• W2079246427 title "Extreme trace elements fractionation in Cenozoic nephelinites and phonolites from the Moroccan Anti-Atlas (Eastern Saghro)" @default.
• W2079246427 cites W1485043829 @default.
• W2079246427 cites W1507573241 @default.
• W2079246427 cites W1656874552 @default.
• W2079246427 cites W1677236754 @default.
• W2079246427 cites W1966340877 @default.
• W2079246427 cites W1967597677 @default.
• W2079246427 cites W1969700311 @default.
• W2079246427 cites W1969859799 @default.
• W2079246427 cites W1973423590 @default.
• W2079246427 cites W1973871913 @default.
• W2079246427 cites W1974731988 @default.
• W2079246427 cites W1976264605 @default.
• W2079246427 cites W1978658483 @default.
• W2079246427 cites W1979982652 @default.
• W2079246427 cites W1983675476 @default.
• W2079246427 cites W1984846057 @default.
• W2079246427 cites W1985876329 @default.
• W2079246427 cites W1985957692 @default.
• W2079246427 cites W1986916420 @default.
• W2079246427 cites W2000845802 @default.
• W2079246427 cites W2002041994 @default.
• W2079246427 cites W2003948785 @default.
• W2079246427 cites W2003956233 @default.
• W2079246427 cites W2008782416 @default.
• W2079246427 cites W2017195243 @default.
• W2079246427 cites W2017690693 @default.
• W2079246427 cites W2018188298 @default.
• W2079246427 cites W2020661642 @default.
• W2079246427 cites W2021254835 @default.
• W2079246427 cites W2022060797 @default.
• W2079246427 cites W2027862110 @default.
• W2079246427 cites W2028213559 @default.
• W2079246427 cites W2029014434 @default.
• W2079246427 cites W2029330897 @default.
• W2079246427 cites W2035883416 @default.
• W2079246427 cites W2037313001 @default.
• W2079246427 cites W2038979071 @default.
• W2079246427 cites W2042133113 @default.
• W2079246427 cites W2042171553 @default.
• W2079246427 cites W2042279102 @default.
• W2079246427 cites W2043466950 @default.
• W2079246427 cites W2046206679 @default.
• W2079246427 cites W2049306057 @default.
• W2079246427 cites W2049597178 @default.
• W2079246427 cites W2049772953 @default.
• W2079246427 cites W2052851484 @default.
• W2079246427 cites W2057315751 @default.
• W2079246427 cites W2057657267 @default.
• W2079246427 cites W2062466505 @default.
• W2079246427 cites W2066355721 @default.
• W2079246427 cites W2086540936 @default.
• W2079246427 cites W2086558702 @default.
• W2079246427 cites W2089561399 @default.
• W2079246427 cites W2090455350 @default.
• W2079246427 cites W2091672848 @default.
• W2079246427 cites W2091997576 @default.
• W2079246427 cites W2092836793 @default.
• W2079246427 cites W2095774940 @default.
• W2079246427 cites W2100995592 @default.
• W2079246427 cites W2101303966 @default.
• W2079246427 cites W2101718819 @default.
• W2079246427 cites W2102598847 @default.
• W2079246427 cites W2105958021 @default.
• W2079246427 cites W2106837803 @default.
• W2079246427 cites W2109625600 @default.
• W2079246427 cites W2112897510 @default.
• W2079246427 cites W2117683602 @default.
• W2079246427 cites W2119460393 @default.
• W2079246427 cites W2119899013 @default.
• W2079246427 cites W2125654971 @default.
• W2079246427 cites W2128591127 @default.
• W2079246427 cites W2133610516 @default.
• W2079246427 cites W2137427519 @default.
• W2079246427 cites W2137696584 @default.
• W2079246427 cites W2142782632 @default.
• W2079246427 cites W2144374655 @default.
• W2079246427 cites W2145387578 @default.
• W2079246427 cites W2146610339 @default.
• W2079246427 cites W2151041036 @default.
• W2079246427 cites W2152782826 @default.
• W2079246427 cites W2152895531 @default.
• W2079246427 cites W2162947446 @default.
• W2079246427 cites W2165989142 @default.
• W2079246427 cites W2166626396 @default.
• W2079246427 cites W2167782460 @default.
• W2079246427 cites W2334109956 @default.
• W2079246427 cites W3088334550 @default.
• W2079246427 cites W4214911971 @default.
• W2079246427 cites W4253600674 @default.
• W2079246427 doi "https://doi.org/10.1016/j.lithos.2014.09.018" @default.

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