Results 101 to 110 of about 3,013 (217)

The isotopic composition of magnesium in mantle olivine: Records of depletion and metasomatism

, 2006
We have investigated detailed Mg isotopic variations in the lithospheric mantle by analysing olivine in mantle-derived peridotite xenoliths and megacrysts.
Alard, O., O'Reilly, S. Y., Pearson, N. J., Griffin, W. L.   +3 more
core   +1 more source

Mélange dehydration and melting beneath South Sandwich Islands arc

Nature Communications
Mechanisms regulating material transfer from subducted slabs to arc magmas remain debated, centered on metasomatized mantle wedge interactions versus mélange mobilization at the slab-mantle interface.
Yunchao Shu, Sune G. Nielsen, Veronique Le Roux, Danielle Santiago Ramos, Jerzy Blusztajn, Maureen Auro, Phil T. Leat, Tristan J. Horner   +7 more
doaj   +1 more source

Evidence for mantle metasomatism by hydrous silicic melts derived from subducted oceanic crust.

, 2001
The low concentrations of niobium, tantalum and titanium observed in island-arc basalts are thought to result from modification of the sub-arc mantle by a metasomatic agent, deficient in these elements, that originates from within the subducted oceanic ...
Maury, René, Prouteau, Gaëlle, Pichavant, Michel, Scaillet, Bruno   +3 more
core   +1 more source

Diamondiferous garnet lherzolite from the V.Grib kimberlite pipe: relationship between subduction, mantle metasomatism and diamond formation

Записки Горного института
The article presents the results of a comprehensive study of diamondiferous lherzolite from the V.Grib kimberlite pipe. The composition of rock-forming minerals (olivine, orthopyroxene, Cr-diopside, Cr-pyrope) in terms of major elements mainly ...
Elena V. Agasheva, Nikolai V. Gubanov, Dmitrii A. Zedgenizov   +2 more
doaj  

Coexisting anorogenic and subduction-related metasomatism in mantle xenoliths from the Betic Cordillera (southern Spain)

, 2004
he mantle xenolith suite from Tallante (Betic Cordillera, southern Spain) comprises peridotites equilibrated in the spinel to plagioclase stability field, ranging in composition from fertile lherzolites to harzburgites residual after partial melting ...
BIANCHINI, Gianluca, VACCARO, Carmela, SIENA, Franca, BECCALUVA, Luigi, BONADIMAN, Costanza   +4 more
core  

Continental evolution influenced by relamination of deeply subducted continental crust. [PDF]

Nat Geosci
Gómez-Frutos D, Castro A, Balázs A, Gerya T.   +3 more
europepmc   +1 more source

Linking carbonatites, rare earth ores, and subduction-fertilized mantle lithosphere. [PDF]

Sci Adv
Spandler C, Merdith AS, Griffin A.
europepmc   +1 more source

Mantle Metasomatism and Alkaline Magmatism [PDF]

, 1987
openaire   +1 more source

Cluster analysis reveals increasing plume-like magmatism during progressive rifting in Afar (Ethiopia). [PDF]

Sci Rep
Tortelli G, Crescenzi P, Pagli C, Gioncada A, Keir D, Pagli L.   +5 more
europepmc   +1 more source

Mantle-derived fluid flux controls Olympic Dam-style Fe oxide-Cu-Au mineralisation. [PDF]

Sci Rep
Thiel S, Reid A, Heinson G, Brand K, Li L.   +4 more
europepmc   +1 more source