Search Results - "Woodhead, J. D."

Magmatic and Crustal Differentiation History of Granitic Rocks from Hf-O Isotopes in Zircon by Kemp, A.I.S, Hawkesworth, C.J, Foster, G.L, Paterson, B.A, Woodhead, J.D, Hergt, J.M, Gray, C.M, Whitehouse, M.J

“…Granitic plutonism is the principal agent of crustal differentiation, but linking granite emplacement to crust formation requires knowledge of the magmatic…”
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Vegetation and Climate Change in Southwestern Australia During the Last Glacial Maximum by Sniderman, J. M. K., Hellstrom, J., Woodhead, J. D., Drysdale, R. N., Bajo, P., Archer, M., Hatcher, L.

“…The nature and duration of the Last Glacial Maximum (LGM) in Australia are poorly understood, with little regional agreement on the timing and direction of LGM…”
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Magma Genesis in the New Britain Island Arc: Further Insights into Melting and Mass Transfer Processes by Woodhead, J D, Eggins, S M, Johnson, R W

“…Quaternary volcanic rocks from the New Britain island arc display a wide range in chemical compositions. The source of the lavas shares isotopic…”
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Geochemical and isotopic variations in the calc-alkaline rocks of Aeolian arc, southern Tyrrhenian Sea, Italy. constraints on magma genesis by FRANCALANCI, L, TAYLOR, S. R, MCCULLOCH, M. T, WOODHEAD, J. D

“…New geochemical and isotopic data for calc-alkaline (CA) volcanics of the Aeolian arc are reported. A comparison of volcanics with the same petrological…”
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A Preliminary Appraisal of Seven Natural Zircon Reference Materials for In Situ Hf Isotope Determination by Woodhead, Jon D., Hergt, Janet M.

“…There is a growing need for new zircon reference materials for in situ Hf‐isotope analysis by laser ablation‐multicollector inductively coupled plasma‐mass…”
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Boninites and Adakites from the Northern Termination of the Tonga Trench: Implications for Adakite Petrogenesis by Falloon, Trevor J., Danyushevsky, Leonid V., Crawford, Anthony J., Meffre, Sebastian, Woodhead, Jon D., Bloomer, Sherman H.

“…Adakitic rocks were recovered by dredging from the northern termination of the Tonga Trench during the 1984 voyage of the R.V. Natsushima and the 1996 voyage…”
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Os Isotopes and the Origin of the Tasmanian Dolerites by Brauns, C M, Hergt, J M, Woodhead, J D, Maas, R

“…New Os isotope data obtained for oxides separated from samples of the Jurassic dolerites of Tasmania (Australia) are used to constrain the petrogenesis of the…”
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Mantle oddities: A sulphate fluid preserved in a MARID xenolith from the Bultfontein kimberlite (Kimberley, South Africa) by Giuliani, A., Phillips, D., Fiorentini, M.L., Kendrick, M.A., Maas, R., Wing, B.A., Woodhead, J.D., Bui, T.H., Kamenetsky, V.S.

“…Sulphur in the lithospheric mantle is concentrated in sulphide minerals, with limited evidence for the occurrence of sulphate phases. Here we describe an…”
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Pb?Sr?Nd?O isotopic constraints on the origin of rhyolites from the Taupo Volcanic Zone of New Zealand: evidence for assimilation followed by fractionation from basalt by McCulloch, M. T., Kyser, T. K., Woodhead, J. D., Kinsley, L.

“…A comprehensive strontium-neodymium-lead-oxygen (Sr-Nd-Pb-O) isotopic study is reported for rhyolites from the Taupo volcanic Zone of New Zealand. The…”
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Mantle heterogeneity beneath the Cenozoic volcanic provinces of central Victoria inferred from trace-element and Sr, Nd, Pb and Hf isotope data by Paul, B, Hergt, JM, Woodhead, JD

“…Volcanic rocks in central Victoria play a key role in unravelling magmatic relationships within an extensive zone of Late Mesozoic to Quaternary volcanism in…”
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Hafnium isotope evidence for ‘conservative’ element mobility during subduction zone processes by Woodhead, J.D., Hergt, J.M., Davidson, J.P., Eggins, S.M.

“…The high field strength elements (HFSE) play a critical role in the interpretation of chemical variation within subduction-related magmas by providing an…”
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Recycling of Proterozoic crust in Pleistocene juvenile magma and rapid formation of the Ok Tedi porphyry Cu–Au deposit, Papua New Guinea by van Dongen, M., Weinberg, R.F., Tomkins, A.G., Armstrong, R.A., Woodhead, J.D.

“…We present an investigation of the combined U–Pb, O and Hf isotope composition of zircons from a giant porphyry copper–gold deposit, hosted in a shoshonitic…”
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A simple method for the precise determination of ≥ 40 trace elements in geological samples by ICPMS using enriched isotope internal standardisation by Eggins, S.M., Woodhead, J.D., Kinsley, L.P.J., Mortimer, G.E., Sylvester, P., McCulloch, M.T., Hergt, J.M., Handler, M.R.

“…The combination of enriched isotopes and conventional elemental internal standards permits the precise determination of > 40 trace elements by ICPMS in a broad…”
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Oxygen isotope evidence for recycled crust in the source of EM-type ocean island basalts by Woodhead, Jon D, Greenwood, Peter, Harmon, Russell S, Stoffers, Peter

“…The oxygen isotope compositions of fresh volcanic glasses from submarine volcanoes of "enriched mantle" type appear to need the presence of subducted crustal…”
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Basalt Pb Isotope Analysis and the Prehistoric Settlement of Polynesia by Weisler, Marshall I., Woodhead, Jon D.

“…The prehistoric settlement of the Pacific Ocean has intrigued scholars and stimulated anthropological debate for the past two centuries. Colonized over a few…”
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Pb-Isotope Analyses of USGS Reference Materials by Woodhead, Jon D., Hergt, Janet M.

“…Conventional corrections for thermal ionisation mass spectrometer (TIMS) induced Pb‐isotopic fractionation often result in a loss of accuracy because the…”
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The May 2003 eruption of Anatahan volcano, Mariana Islands: Geochemical evolution of a silicic island-arc volcano by Wade, Jennifer A., Plank, Terry, Stern, Robert J., Tollstrup, Darren L., Gill, James B., O'Leary, Julie C., Eiler, John M., Moore, Richard B., Woodhead, Jon D., Trusdell, Frank, Fischer, Tobias P., Hilton, David R.

“…The first historical eruption of Anatahan volcano began on May 10, 2003. Samples of tephra from early in the eruption were analyzed for major and trace…”
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Geochemical variation within the northern Ryukyu Arc: magma source compositions and geodynamic implications by Shinjo, Ryuichi, Woodhead, Jon D, Hergt, Janet M

“…The majolr and trace element and Pb-Sr-Nd isotopic compositions of Quaternary mafic lavas from the norther Ryukyu arc provide insights into the nature of the…”
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Pan-African intraplate deformation in the northern Prince Charles Mountains, east Antarctica by Boger, S.D., Carson, C.J., Fanning, C.M., Hergt, J.M., Wilson, C.J.L., Woodhead, J.D.

“…New structural and metamorphic data coupled with U–Pb SHRIMP zircon and Rb–Sr step-leach biotite ages help constrain a period of Early Palaeozoic (Pan-African)…”
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Interplay of crystal fractionation, sulfide saturation and oxygen fugacity on the iron isotope composition of arc lavas: An example from the Marianas by Williams, H.M., Prytulak, J., Woodhead, J.D., Kelley, K.A., Brounce, M., Plank, T.

“…Subduction zone systems are central to a multitude of processes from the evolution of the continental crust to the concentration of metals into economically…”
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