Search Results - "Arculus, R. J."

Iron isotopic evidence for convective resurfacing of recycled arc-front mantle beneath back-arc basins by Nebel, O., Arculus, R. J., Sossi, P. A., Jenner, F. E., Whan, T. H. E.

“…Geophysical observations suggest sub‐arc convective flow transports melt‐exhausted and metasomatized wedge mantle into deeper mantle regions. Reciprocally,…”
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Use and Abuse of the Terms Calcalkaline and Calcalkalic by ARCULUS, R. J.

“…The terms calcalkaline and calcalkalic are currently defined and used in multiple and non-equivalent ways. Generally, the variation of total Fe as FeO/MgO…”
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Helium isotope variations in seafloor basalts from the Northwest Lau Backarc Basin: Mapping the influence of the Samoan hotspot by Lupton, J. E., Arculus, R. J., Greene, R. R., Evans, L. J., Goddard, C. I.

“…New helium isotope results for seafloor basalts from the northern Lau Basin indicate that the signature of the Samoan hotpot has penetrated beneath the…”
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Mantle hotspot neon in basalts from the Northwest Lau Back-arc Basin by Lupton, J. E., Arculus, R. J., Evans, L. J., Graham, D. W.

“…The neon isotope compositions of basalts from the Northwest Lau Back‐arc Basin reflect three‐component mixing between an ocean island basalt (OIB) mantle…”
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Peridotite xenoliths from Grenada, Lesser Antilles Island Arc by Parkinson, I. J., Arculus, R. J., Eggins, S. M.

“…Ultramafic xenoliths comprising harzburgite, lherzolite (reacted harzburgite) and spinel-rich dunite, occur in alkali olivine basalts (M series) of Grenada in…”
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Pb-isotopic evidence for rapid trench-parallel mantle flow beneath Vanuatu by Heyworth, Z, Knesel, K. M, Turner, S. P, Arculus, R. J

“…Recent geophysical and geochemical studies suggest that some subduction zones have a significant component of trench-parallel flow that is difficult to…”
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Platinum-Group Element Geochemistry and Magma Evolution of the Mount Hagen (Papua New Guinea) Magmatic System by Misztela, M A, Campbell, I H, Arculus, R J

“…Abstract Mount Hagen is a mid-Pleistocene stratovolcano located in the Papua New Guinea Highlands. It was selected for this study because of (1) its close…”
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Redox-variability and controls in subduction zones from an iron-isotope perspective by Nebel, O., Sossi, P.A., Bénard, A., Wille, M., Vroon, P.Z., Arculus, R.J.

“…An ongoing controversy in mantle geochemistry concerns the oxidation state of the sources of island arc lavas (IAL). Three key factors control…”
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Petrology of Plutonic Xenoliths and Volcanic Rocks from Grenada, Lesser Antilles by Stamper, C. C., Blundy, J. D., Arculus, R. J., Melekhova, E.

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Frozen melt–rock reaction in a peridotite xenolith from sub-arc mantle recorded by diffusion of trace elements and water in olivine by Tollan, P.M.E., O'Neill, H.St.C., Hermann, J., Benedictus, A., Arculus, R.J.

“…Inferring the ambient state of the lithospheric mantle from xenoliths may be misleading if the magmatic activity responsible for the exhumation has modified…”
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Generation and Modification of the Mantle Wedge and Lithosphere beneath the West Bismarck Island Arc: Melting, Metasomatism and Thermal History of Peridotite Xenoliths from Ritter Island by Tollan, P M E, Dale, C W, Hermann, J, Davidson, J P, Arculus, R J

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Oxidised phase relations of a primitive basalt from Grenada, Lesser Antilles by Stamper, C. C., Melekhova, E., Blundy, J. D., Arculus, R. J., Humphreys, M. C. S., Brooker, R. A.

“…A series of liquidus determinations is reported for a primitive arc basalt (15.4 wt % MgO, 45.5 wt % SiO 2 ) from Grenada, Lesser Antilles, at anhydrous, H 2…”
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Spinel Harzburgite-Derived Silicate Melts Forming Sulfide-Bearing Orthopyroxenite in the Lithosphere. Part 1: Partition Coefficients and Volatile Evolution Accompanying Fluid- and Redox-Induced Sulfide Formation by Bénard, A., Le Losq, C., Müntener, O., Robyr, M., Nebel, O., Arculus, R. J., Ionov, D. A.

“…We report abundances of major trace and volatile elements in an orthopyroxenite vein cutting a sub-arc, mantle-derived, spinel harzburgite xenolith from…”
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Chlorine in submarine volcanic glasses from the eastern manus basin by Sun, W.D., Binns, R.A., Fan, A.C., Kamenetsky, V.S., Wysoczanski, R., Wei, G.J., Hu, Y.H., Arculus, R.J.

“…Submarine volcanic glasses from the eastern Manus Basin of Papua New Guinea, ranging from basalt to rhyodacite, clarify the geochemical behavior of Cl in…”
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The redox state of subduction zones: insights from arc-peridotites by Parkinson, Ian J., Arculus, Richard J.

“…Spinel peridotites from a variety of island arcs have been utilised to calculate the redox state of the mantle wedge above subduction zones. Oxygen fugacities…”
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Temporal Variations in U-series Disequilibria in an Active Caldera, Rabaul, Papua New Guinea by Cunningham, H. S., Turner, S. P., Dosseto, A., Patia, H., Eggins, S. M., Arculus, R. J.

“…Intra-caldera eruptions have been speculated to sample the last batches of magma remaining from earlier caldera-forming eruptions. Rabaul Caldera, New Britain,…”
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Cenozoic Magmatism of the North-Eastern Eurasian Margin: The Role of Lithosphere Versus Asthenosphere by OKAMURA, SATOSHI, ARCULUS, RICHARD J., MARTYNOV, YURI A.

“…Sikhote-Alin and Sakhalin are located in the Russian Far East flank of the northernmost part of the Sea of Japan. Magmatism in this region preceded, was…”
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Enhanced mantle-to-crust rhenium transfer in undegassed arc magmas by Bennett, Vickie C, Sun, Weidong, Eggins, Stephen M, Kamenetsky, Vadim S, Arculus, Richard J

“…Variations in the 187Os/188Os isotopic signature of mantle and mantle-derived rocks have been thought to provide a powerful chemical tracer of deep Earth…”
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Rhenium systematics in submarine MORB and back-arc basin glasses: laser ablation ICP-MS results by Sun, W., Bennett, V.C., Eggins, S.M., Arculus, R.J., Perfit, M.R.

“…Rhenium and other trace elements, including the moderately chalcophile elements Mo and Cu, were determined for 37 submarine basaltic glasses from the Lau and…”
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Nd-Sr isotope composition of lower crustal xenoliths - Evidence for the origin of mid-tertiary felsic volcanics in Mexico by RUIZ, J, PATCHETT, P. J, ARCULUS, R. J

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