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- W2018503407 endingPage "183" @default.
- W2018503407 startingPage "165" @default.
- W2018503407 abstract "Abstract The Neapolitan volcanic area (Southern Italy), which includes the Phlegrean Volcanic District and the Somma–Vesuvius complex, has been the site of intense Plio-Quaternary magmatic activity and has produced volcanic rocks with a subduction-related geochemical and isotopic signature. High-Mg, K-basaltic lithic lava fragments dispersed within hydromagmatic tuff of the Solchiaro eruption (Procida Island) provide constraints on the nature and role of both the mantle source prior to enrichment and the subduction-related components. The geochemical data (Nb/Yb, Nb/Y, Zr/Hf) indicate a pre-enrichment source similar to that of enriched MORB mantle. In order to constrain the characteristics of subducted slab-derived components added to this mantle sector, new geochemical and Sr–Nd-isotopic data have been acquired on meta-sediments and pillow lavas from Timpa delle Murge ophiolites. These represent fragments of Tethyan oceanic crust (basalts and sediments) obducted during the Apennine orogeny, and may be similar to sediments subducted during the closure of the Tethys Ocean. Based on trace element compositions (e.g., Th/Nd, Nb/Th, Yb/Th and Ba/Th) and Nd-isotopic ratio, we hypothesize the addition of several distinct subducted slab-derived components to the mantle wedge: partial melts from shales and limestones, and aqueous fluids from shales, but the most important contribution is provided by melts from pelitic sediments. Also, trace elements and Sr–Nd-isotopic ratios seem to rule out a significant role for altered oceanic crust. Modeling based on variations of trace elements and isotopic ratios indicates that the pre-subduction mantle source of the Phlegrean Volcanic District and Somma–Vesuvius was enriched by 2–4% of subducted slab-derived components. This enrichment event might have stabilized amphibole and/or phlogopite in the mantle source. 6% degree of partial melting of a phlogopite-bearing enriched source, occurring initially in the garnet stability field and then in the spinel stability field can generate a melt with trace elements and Sr–Nd-isotopic features matching those of high-Mg, K-basalts of Procida Island. Furthermore, 2% partial melting of the same enriched source can reproduce the trace elements and isotopic features of the most primitive magmas of Somma–Vesuvius, subsequently modified by assimilation of continental crust during fractional crystallization processes at mid-lower depth. Combined trace element and Sr–Nd isotope modeling constrains the age of the enrichment event to 45 Ma ago, suggesting that the Plio-Quaternary magmatism of the Neapolitan area is post-orogenic, and related to the subduction of oceanic crust belonging to the Tethys Ocean." @default.
- W2018503407 created "2016-06-24" @default.
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- W2018503407 date "2014-10-01" @default.
- W2018503407 modified "2023-10-10" @default.
- W2018503407 title "Subduction-related enrichment of the Neapolitan volcanoes (Southern Italy) mantle source: New constraints on the characteristics of the slab-derived components" @default.
- W2018503407 cites W1512200741 @default.
- W2018503407 cites W1519671336 @default.
- W2018503407 cites W1534749586 @default.
- W2018503407 cites W1541918322 @default.
- W2018503407 cites W1542640906 @default.
- W2018503407 cites W1592718458 @default.
- W2018503407 cites W1697907569 @default.
- W2018503407 cites W1828329906 @default.
- W2018503407 cites W1907935558 @default.
- W2018503407 cites W1964189217 @default.
- W2018503407 cites W1965969708 @default.
- W2018503407 cites W1974626411 @default.
- W2018503407 cites W1975657796 @default.
- W2018503407 cites W1976549496 @default.
- W2018503407 cites W1978658483 @default.
- W2018503407 cites W1979107676 @default.
- W2018503407 cites W1981809587 @default.
- W2018503407 cites W1985925057 @default.
- W2018503407 cites W1988613402 @default.
- W2018503407 cites W1988909155 @default.
- W2018503407 cites W1991586224 @default.
- W2018503407 cites W1992011617 @default.
- W2018503407 cites W1993938132 @default.
- W2018503407 cites W1995857854 @default.
- W2018503407 cites W1997221511 @default.
- W2018503407 cites W1998707404 @default.
- W2018503407 cites W1999375903 @default.
- W2018503407 cites W2004772540 @default.
- W2018503407 cites W2009350839 @default.
- W2018503407 cites W2009779057 @default.
- W2018503407 cites W2010744974 @default.
- W2018503407 cites W2010766879 @default.
- W2018503407 cites W2011607179 @default.
- W2018503407 cites W2013864655 @default.
- W2018503407 cites W2014832120 @default.
- W2018503407 cites W2015178398 @default.
- W2018503407 cites W2023457959 @default.
- W2018503407 cites W2023862052 @default.
- W2018503407 cites W2024116412 @default.
- W2018503407 cites W2025636523 @default.
- W2018503407 cites W2026397963 @default.
- W2018503407 cites W2028669443 @default.
- W2018503407 cites W2029497855 @default.
- W2018503407 cites W2030382982 @default.
- W2018503407 cites W2030387090 @default.
- W2018503407 cites W2031052370 @default.
- W2018503407 cites W2031295342 @default.
- W2018503407 cites W2035283420 @default.
- W2018503407 cites W2036789715 @default.
- W2018503407 cites W2038007178 @default.
- W2018503407 cites W2039064764 @default.
- W2018503407 cites W2040139655 @default.
- W2018503407 cites W2045135669 @default.
- W2018503407 cites W2047567126 @default.
- W2018503407 cites W2047662553 @default.
- W2018503407 cites W2047965201 @default.
- W2018503407 cites W2049317419 @default.
- W2018503407 cites W2049735304 @default.
- W2018503407 cites W2052485560 @default.
- W2018503407 cites W2053384886 @default.
- W2018503407 cites W2056509981 @default.
- W2018503407 cites W2058118596 @default.
- W2018503407 cites W2058196930 @default.
- W2018503407 cites W2059350495 @default.
- W2018503407 cites W2060240557 @default.
- W2018503407 cites W2061214600 @default.
- W2018503407 cites W2062703863 @default.
- W2018503407 cites W2069790122 @default.
- W2018503407 cites W2071324209 @default.
- W2018503407 cites W2071354290 @default.
- W2018503407 cites W2071595664 @default.
- W2018503407 cites W2073773279 @default.
- W2018503407 cites W2074324100 @default.
- W2018503407 cites W2074843698 @default.
- W2018503407 cites W2079418741 @default.
- W2018503407 cites W2079765725 @default.
- W2018503407 cites W2081507631 @default.
- W2018503407 cites W2083565466 @default.
- W2018503407 cites W2085797755 @default.
- W2018503407 cites W2086013452 @default.
- W2018503407 cites W2086227631 @default.
- W2018503407 cites W2087025012 @default.
- W2018503407 cites W2087420220 @default.
- W2018503407 cites W2090397887 @default.
- W2018503407 cites W2091245008 @default.
- W2018503407 cites W2091324857 @default.
- W2018503407 cites W2091690770 @default.