Search Results - "Le Roex, A.P."

Mantle heterogeneity beneath the southern Mid-Atlantic Ridge: trace element evidence for contamination of ambient asthenospheric mantle by le Roux, P.J, le Roex, A.P, Schilling, J.-G, Shimizu, N, Perkins, W.W, Pearce, N.J.G

“…We report new trace element data for an extensive suite of quench basalt glasses dredged from the southern Mid-Atlantic Ridge (MAR) between 40 degree S and…”
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The geochemistry of primitive volcanic rocks of the Ankaratra volcanic complex, and source enrichment processes in the genesis of the Cenozoic magmatism in Madagascar by Melluso, L., Cucciniello, C., le Roex, A.P., Morra, V.

“…The Ankaratra volcanic complex in central Madagascar consists of lava flows, domes, scoria cones, tuff rings and maars of Cenozoic age that are scattered over…”
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Hf isotope evidence for selective mobility of high-field-strength elements in a subduction setting: South Sandwich Islands by Barry, T.L., Pearce, J.A., Leat, P.T., Millar, I.L., le Roex, A.P.

“…176Hf/ 177Hf isotopes provide information about the behaviour of so-called immobile elements in subduction environments. Early studies of Hf isotopes in…”
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Feeding system and mantle sources of the southern and western sector of the Madagascar flood basalt province, and comparisons with Southwest Indian Ridge “anomalous” basalts by Cucciniello, C., Grifa, C., le Roex, A.P., de Gennaro, R., Morra, V., Melluso, L.

“…The flood basalts of Cretaceous age in southwestern Madagascar range from moderately incompatible-element-enriched, tholeiitic, high-Ti ferrobasalt/basaltic…”
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Geochemistry of Cenozoic mafic potassic and sodic volcanic rocks in southwestern Madagascar: Long-lived lithospheric mantle heterogeneities in an extensional tectonic setting by Cucciniello, C., le Roex, A.P., de' Gennaro, R., Jourdan, F., Grifa, C., Morra, V., Melluso, L.

“…Cenozoic (≥ 43 Ma) silica undersaturated (potassic) trachybasalts and trachyandesites in southwestern Madagascar (Tsianihy-Manja, southern Morondava Basin)…”
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The magmatic evolution and genesis of the Quaternary basanite-trachyphonolite suite of Itasy (Madagascar) as inferred by geochemistry, Sr-Nd-Pb isotopes and trace element distribution in coexisting phases by Melluso, L., Tucker, R.D., Cucciniello, C., le Roex, A.P., Morra, V., Zanetti, A., Rakotoson, R.L.

“…The Itasy is a Pleistocene-Holocene volcanic field in central Madagascar, located to the west of the Ankaratra volcanic complex. It comprises scoria cones and…”
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Selenium and tellurium systematics in MORBs from the southern Mid-Atlantic Ridge (47–50°S) by Lissner, M., König, S., Luguet, A., le Roux, P.J., Schuth, S., Heuser, A., le Roex, A.P.

“…Selenium and tellurium concentrations along with sulfur and Highly Siderophile Element (HSE) contents as well as 187Os signatures were determined in 20…”
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Petrology and geochemistry of Marion and Prince Edward Islands, Southern Ocean: Magma chamber processes and source region characteristics by le Roex, A.P., Chevallier, L., Verwoerd, W.J., Barends, R.

“…New bulk rock geochemical data on an extensive suite of samples from the Marion and Prince Edward Islands, located in the Southern Ocean at ~37°45′E, 46°55′S,…”
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Re–Os isotopic composition of peridotitic sulphide inclusions in diamonds from Ellendale, Australia: Age constraints on Kimberley cratonic lithosphere by Smit, K.V., Shirey, S.B., Richardson, S.H., le Roex, A.P., Gurney, J.J.

“…Sulphide-bearing diamonds recovered from the ∼20 Ma Ellendale 4 and 9 lamproite pipes in north-western Australia were investigated to determine the nitrogen…”
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Spinel lherzolite xenoliths from the Premier kimberlite (Kaapvaal craton, South Africa): Nature and evolution of the shallow upper mantle beneath the Bushveld complex by Grégoire, M., Tinguely, C., Bell, D.R., le Roex, A.P.

“…Coarse-grained, granular spinel lherzolites xenoliths from the Premier kimberlite show evidence of melt extraction and metasomatic enrichment, documenting a…”
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The petrology of the Chyulu Hills Volcanic Province, southern Kenya by Späth, A., Le Roex, A.P., Opiyo-Akech, N.

“…The Quaternary Chyulu Hills Volcanic Province is located more than 100 km east of the Kenya Rift Valley. It consists of a large number of free-standing and…”
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The rare-earth element content of GSJ rock referene samples determined by gradient ion chromatography by WATKINS, R.T, LE ROEX, A.P

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