Search Results - "Willbold, M."

Systematic Across‐Arc Variations of Molybdenum Isotopes in a Fluid‐Dominated Subduction Zone System by Willbold, M., Messling, N.

“…Mass‐dependent Mo isotope variations are a promising new tracer to study magmatic processes in different geological settings. We report the first Mo isotope…”
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Mobilization of Tungsten in Greenstone Belts of the Archean Kaapvaal and Singhbhum Cratons by Messling, N., Jodder, J., Hegner, E., Hofmann, A., Wemmer, K., Willbold, M.

“…Due to the inherently fluid‐mobile nature of W, the 182W record of the early Earth may have been obscured by fluid‐induced mobilization of W. To investigate W…”
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Tungsten isotope composition of the Acasta Gneiss Complex by Willbold, M., Mojzsis, S.J., Chen, H.-W., Elliott, T.

“…High-precision tungsten (182W/184W) isotope measurements on well-characterised mafic and felsic samples of the ca. 3960 Ma Acasta Gneiss Complex (AGC;…”
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High-K andesites as witnesses of a continental arc system in the Western Alps, Italy: constraints from HFSE and Hf–Nd–Sr–Pb–O isotope systematics by Jung, S., Pfänder, J. A., Nebel, O., Willbold, M., Hoernes, S., Berndt, J., Pack, A.

“…Geochemical and isotopic data are presented for ~ 32 Ma-old high-K andesites and dacites from the Alpine Chain. The samples consist of plagioclase, amphibole,…”
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Early Silurian tholeiitic-boninitic Mailisu ophiolite, South Tianshan, Kyrgyzstan: a geochemical record of subduction initiation by Hegner, E., Alexeiev, D.V., Willbold, M., Kröner, A., Topuz, G., Mikolaichuk, A.V.

“…Ophiolite assemblages of the South Tianshan fold-and-thrust-belt (STS) track the sea floor dynamics of the late Cambrian to Carboniferous Turkestan Ocean in…”
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Geochemical evidence for a Neoproterozoic magmatic continental margin in Sri Lanka—relevance for the Rodinia–Gondwana supercontinent cycle by Willbold, M, Hegner, E, Kleinschrodt, R, Stosch, H.-G, Kehelpannala, K.V.W, Dulski, P

“…Zircon ages of Neoproterozoic crustal blocks in Sri Lanka indicate crystallization and metamorphism contemporaneously with the development of the…”
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Formation of enriched mantle components by recycling of upper and lower continental crust by Willbold, Matthias, Stracke, Andreas

“…The origin of enriched mantle (EM) sources remains an unsolved problem for constraining the composition and chemical evolution of the Earth's mantle, because a…”
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Validation of multi-element isotope dilution ICPMS for the analysis of basalts by Willbold, M, Jochum, K P, Raczek, I, Amini, M A, Stoll, B, Hofmann, A W

“…In this study we have validated a newly developed multi-element isotope dilution (ID) ICPMS method for the simultaneous analysis of up to 12 trace elements in…”
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Cambrian-Ordovician mid-ocean ridge magmatism in the Kyrgyz Middle Tianshan and origin of the Karaterek ophiolite by Hegner, E., Alexeiev, D.V., Messling, N., Tolmacheva, T.Yu, Willbold, M.

“…The Karaterek ophiolite represents a remnant of a previously unknown early Paleozoic ocean basin in the Kyrgyz Middle Tianshan (MTS) and sheds new light on the…”
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Continental geochemical signatures in dacites from Iceland and implications for models of early Archaean crust formation by Willbold, Matthias, Hegner, Ernst, Stracke, Andreas, Rocholl, Alexander

“…Whether early Archaean felsic crust was formed by processes related to plate subduction or melting of thick basaltic plateaus is vividly debated. Ultimately,…”
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Ancient mantle plume components constrained by tungsten isotope variability in arc lavas by Messling, N., Wörner, G., Willbold, M.

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Thallium elemental and isotopic systematics in ocean island lavas by Brett, E.K.A., Prytulak, J., Rehkämper, M., Hammond, S.J., Chauvel, C., Stracke, A., Willbold, M.

“…The Earth’s mantle exhibits marked chemical heterogeneity. We provide an examination of thallium systematics in ocean island basalts (OIB): new high-precision…”
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Multi-Element Isotope Dilution Sector Field ICP-MS: A Precise Technique for the Analysis of Geological Materials and its Application to Geological Reference Materials by Willbold, Matthias, Jochum, Klaus Peter

“…We present a multi‐element technique for the simultaneous determination of twelve trace elements in geological materials by combined isotope dilution (ID)…”
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Chemical Characterisation of the USGS Reference Glasses GSA-1G, GSC-1G, GSD-1G, GSE-1G, BCR-2G, BHVO-2G and BIR-1G Using EPMA, ID-TIMS, ID-ICP-MS and LA-ICP-MS by Jochum, Klaus Peter, Willbold, Matthias, Raczek, Ingrid, Stoll, Brigitte, Herwig, Kirstin

“…The USGS reference glasses GSA‐1G, GSC‐1G, GSD‐1G, GSE‐1G, BCR‐2G, BHVO‐2G and BIR‐1G were investigated by different analytical techniques. All these materials…”
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Reply to comment by E. Martin, M. Martin, and O. Sigmarsson on “Continental geochemical signatures in dacites from Iceland and implications for models of early Archaean crust formation” by M. Willbold, E. Hegner, A. Stracke, and A. Rocholl by Willbold, M., Hegner, E., Stracke, A., Rocholl, A.

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Upper and lower continental crust in the sources of ocean island basalts—isotopic and chemical constraints by Willbold, M., Stracke, A.

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Chemical characterisation of the USGS reference glasses GSA-1 G, GSC-1 G, GSD-1 G, GSE-1 G, BCR-2 G, BHVO-2 G and BIR-1 G using EPMA, ID-TIMS, ID-ICP-MS and LA-ICP-MS by JOCHUM, K. P, WILLBOLD, M, RACZEK, I, STOLL, B, HERWIG, K

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