Matches in SemOpenAlex for { <https://semopenalex.org/work/W2892362191> ?p ?o ?g. }
- W2892362191 abstract "Constraining arc magma sources at continental arc settings is a delicate task, because chemical signatures from crustal processes obscure the slab and mantle signatures. Here, we present major, trace, and volatile element compositions of olivine-hosted melt inclusions (Fo82–89) selected from the most primitive lavas (Mg# > 60) from two Ecuadorian volcanoes (Puñalica and Sangay) situated at the southern termination of the Andean Northern Volcanic Zone. Melt inclusions (MI) from Puñalica are nepheline normative and have basaltic-to-basaltic-andesite compositions (45–56 wt% SiO2) similar to peridotite-derived melts. Sangay MI is also nepheline normative, with high CaO (up to 16 wt% and CaO/Al2O3 < 1) and low silica contents (41.9–44.5 wt%) pointing out an amphibole-bearing clinopyroxenite source. Both volcanoes display volatile-rich compositions (up to 6100 ppm Cl, 2200 ppm F, and 6700 ppm S). These MI cannot be related to their host lavas by fractional crystallization, implying that they represent true primitive liquids. The source of Puñalica MI was metasomatized by slab-derived melts that imprints its low Ba/Th, Sr/Th, and high Th/La (average values of 66, 129, and 0.22, respectively). On the contrary, the slab component added to the source of Sangay MI has a higher Ba/Th, Sr/Th, and low Th/La (average values of 261, 517, and 0.11, respectively) which could suggest a relative contribution of aqueous fluids. This dichotomy is related to the presence of the Grijalva Fracture Zone that separates a younger and hotter oceanic crust to the north (below Puñalica) from a colder and older oceanic crust to the south (below Sangay)." @default.
- W2892362191 created "2018-09-27" @default.
- W2892362191 creator A5026050814 @default.
- W2892362191 creator A5033658249 @default.
- W2892362191 creator A5035195830 @default.
- W2892362191 creator A5076540192 @default.
- W2892362191 creator A5081489117 @default.
- W2892362191 date "2018-09-10" @default.
- W2892362191 modified "2023-09-30" @default.
- W2892362191 title "Constraining magma sources using primitive olivine-hosted melt inclusions from Puñalica and Sangay volcanoes (Ecuador)" @default.
- W2892362191 cites W1890534790 @default.
- W2892362191 cites W1907650291 @default.
- W2892362191 cites W1966397334 @default.
- W2892362191 cites W1973438572 @default.
- W2892362191 cites W1978226631 @default.
- W2892362191 cites W1978264821 @default.
- W2892362191 cites W1985115683 @default.
- W2892362191 cites W1985649750 @default.
- W2892362191 cites W1986713906 @default.
- W2892362191 cites W1988036625 @default.
- W2892362191 cites W1989705035 @default.
- W2892362191 cites W1990968777 @default.
- W2892362191 cites W1995671876 @default.
- W2892362191 cites W1999075746 @default.
- W2892362191 cites W2000506586 @default.
- W2892362191 cites W2001443300 @default.
- W2892362191 cites W2003156310 @default.
- W2892362191 cites W2003445267 @default.
- W2892362191 cites W2008484337 @default.
- W2892362191 cites W2008782416 @default.
- W2892362191 cites W2010540350 @default.
- W2892362191 cites W2010900329 @default.
- W2892362191 cites W2011607179 @default.
- W2892362191 cites W2014832120 @default.
- W2892362191 cites W2015500192 @default.
- W2892362191 cites W2019139998 @default.
- W2892362191 cites W2020383655 @default.
- W2892362191 cites W2020714453 @default.
- W2892362191 cites W2024982606 @default.
- W2892362191 cites W2027862110 @default.
- W2892362191 cites W2027920577 @default.
- W2892362191 cites W2030387090 @default.
- W2892362191 cites W2030649370 @default.
- W2892362191 cites W2034260155 @default.
- W2892362191 cites W2035167073 @default.
- W2892362191 cites W2035283420 @default.
- W2892362191 cites W2035833878 @default.
- W2892362191 cites W2037642999 @default.
- W2892362191 cites W2037708864 @default.
- W2892362191 cites W2038979071 @default.
- W2892362191 cites W2039517403 @default.
- W2892362191 cites W2040089758 @default.
- W2892362191 cites W2041911594 @default.
- W2892362191 cites W2042423268 @default.
- W2892362191 cites W2048888141 @default.
- W2892362191 cites W2052473341 @default.
- W2892362191 cites W2053577868 @default.
- W2892362191 cites W2055357116 @default.
- W2892362191 cites W2056035061 @default.
- W2892362191 cites W2056854711 @default.
- W2892362191 cites W2057362605 @default.
- W2892362191 cites W2058000599 @default.
- W2892362191 cites W2060655431 @default.
- W2892362191 cites W2064241548 @default.
- W2892362191 cites W2064475601 @default.
- W2892362191 cites W2066382013 @default.
- W2892362191 cites W2068525217 @default.
- W2892362191 cites W2069946125 @default.
- W2892362191 cites W2070707331 @default.
- W2892362191 cites W2071583796 @default.
- W2892362191 cites W2074579635 @default.
- W2892362191 cites W2074796137 @default.
- W2892362191 cites W2080843712 @default.
- W2892362191 cites W2081673195 @default.
- W2892362191 cites W2081949140 @default.
- W2892362191 cites W2091624736 @default.
- W2892362191 cites W2093066740 @default.
- W2892362191 cites W2095267307 @default.
- W2892362191 cites W2095681242 @default.
- W2892362191 cites W2096795635 @default.
- W2892362191 cites W2098282350 @default.
- W2892362191 cites W2099914884 @default.
- W2892362191 cites W2102704186 @default.
- W2892362191 cites W2103081350 @default.
- W2892362191 cites W2105937867 @default.
- W2892362191 cites W2108597026 @default.
- W2892362191 cites W2109071061 @default.
- W2892362191 cites W2113566502 @default.
- W2892362191 cites W2115609653 @default.
- W2892362191 cites W2119438235 @default.
- W2892362191 cites W2119745789 @default.
- W2892362191 cites W2120482945 @default.
- W2892362191 cites W2127936998 @default.
- W2892362191 cites W2132443428 @default.
- W2892362191 cites W2134239353 @default.
- W2892362191 cites W2135596310 @default.
- W2892362191 cites W2138522501 @default.
- W2892362191 cites W2142762707 @default.
- W2892362191 cites W2144235599 @default.
- W2892362191 cites W2145898590 @default.