Fig. 3: Mo isotope and trace element systematics of serpentinite mud and volcanic rock samples.
From: Molybdenum isotopes unmask slab dehydration and melting beneath the Mariana arc
Plots of δ98/95Mo vs. a Ce/Mo, b Ba/Nb, c Cs/Nb, and d Mo/Nb for the Asùt Tesoru serpentinite mud samples and Pagan and NW Rota-1 volcanic rock samples unaffected by amphibole fractional crystallization. The Izu arc33, other Mariana volcanic front volcanoes8, average Mariana sediments6,8, 801 C AMOC Super Composite8,72 and average blueschist and eclogite data from the Raspas Complex and Cabo Ortegal Complex32 are also plotted for comparison. The ranges for depleted mantle (DM) are estimated according to the studies of Bezard et al.34, Gale et al.44, Workman and Hart73, and Salters and Stracke43. COB clinopyroxene-olivine basalt, POB plagioclase-olivine basalt, AMOC altered mafic oceanic crust, SD standard deviation. The blue arrows show compositions of magmas formed above increasing slab depth.
