全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:... Luc Tack , Luc André , Jean-Marc Baele
来源:[J].Mineralium Deposita(IF 2.147), 2016, Vol.51 (4), pp.453-466Springer
摘要:Abstract(#br)The Matongo carbonatite intrusive body in the Neoproterozoic Upper Ruvubu alkaline plutonic complex (URAPC) in Burundi is overlain by an economic phosphate ore deposit that is present as breccia lenses. The ore exhibits evidence of supergene enrichment but also ...
作者:... Sylvain Bermell , Emmanuel Ponzevera , Luc André
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2016, Vol.438, pp.25-36Elsevier
摘要:Abstract(#br)The hafnium and neodymium radiogenic isotope systems behave differently during Earth surface processes, causing a wide dispersion of Hf and Nd isotopic compositions in sediments and other sedimentary rocks. The decoupling between Hf and Nd isotopes in sediments ...
作者:... Stijn Dewaele , Luc André , Philippe Muchez
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2014, Vol.132, pp.349-374Elsevier
摘要:Abstract(#br)This study presents a general model for the evaluation of Rayleigh fractional crystallisation as the principal differentiation mechanism in the formation of regionally zoned common and rare-element pegmatites. The magmatic evolution of these systems from a grani...
作者:... Damien Cardinal , Axel Hofmann , Luc André
来源:[J].Chemical Geology(IF 3.154), 2016, Vol.420, pp.139-147Elsevier
摘要:Abstract(#br)The influence of continental weathering on oceanic seawater compositions in the Precambrian is poorly understood. Here we combine Si isotopes and Ge/Si ratios of a Mesoarchean paleosol (~ 2.95 Ga) and overlying shales as proxies for weathering processes and Si m...
作者:... Damien Cardinal , Axel Hofmann , Luc André
来源:[J].Chemical Geology(IF 3.154), 2016, Vol.420, pp.139-147Elsevier
摘要:Abstract(#br)The influence of continental weathering on oceanic seawater compositions in the Precambrian is poorly understood. Here we combine Si isotopes and Ge/Si ratios of a Mesoarchean paleosol (~ 2.95 Ga) and overlying shales as proxies for weathering processes and Si m...
作者:... Sylvain Bermell , Emmanuel Ponzevera , Luc André
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2016, Vol.438, pp.25-36Elsevier
摘要:Abstract(#br)The hafnium and neodymium radiogenic isotope systems behave differently during Earth surface processes, causing a wide dispersion of Hf and Nd isotopic compositions in sediments and other sedimentary rocks. The decoupling between Hf and Nd isotopes in sediments ...
作者:... Emmanuel Ponzevera , Charlotte Skonieczny , Luc André
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2019, Vol.505, pp.30-41Elsevier
摘要:Abstract(#br)There is increasing evidence that abrupt vegetation shifts and large-scale erosive phases occurred in Central Africa during the third millennium before present. Debate exists as to whether these events were caused by climate change and/or intensifying human acti...
作者:... Yves-Marie Paulet , Luc André , Frank Dehairs
来源:[J].Geo-Marine Letters(IF 1.852), 2008, Vol.28 (5-6), pp.351-358Springer
摘要:Abstract(#br)Barium/calcium profiles of bivalve shells are characterized by flat background signals periodically interrupted by sharp peaks, with the background signals correlated with water Ba/Ca. To test if the peaks are an environmental signal related to productivity, we analy...
作者:Luc André , Dirk Notz
来源:[J].Biogeochemistry(IF 3.531), 2014, Vol.119 (1-3), pp.25-33Springer
摘要:Abstract(#br)We report silicon isotopic composition (δ 30 Si vs. NBS28) in Arctic sea ice, based on sampling of silicic acid from both brine and seawater in a small Greenlandic bay in March 2010. Our measurements show that just before the productive period, δ 30 Si of sea-ic...
作者:... Fjo De Ridder , Luc André , Marc Elskens
来源:[J].Deep-Sea Research Part I(IF 2.816), 2012, Vol.70, pp.42-59Elsevier
摘要:Abstract(#br)A box model is presented describing the time evolution for the three stable Si isotopes (or total concentration and natural isotopic compositions), both in the dissolved and biogenic pools. Temporal variations are controlled by uptake, dissolution (both with iso...

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