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作者:Georges Ceuleneer , Juan Carlos Afonso
来源:[J].LITHOS(IF 3.779), 2020, Vol.354-355
摘要:Abstract(#br)Mantle lithologies in orogenic massifs and xenoliths commonly display strikingly different Hf- and Nd-isotope compositions compared to oceanic basalts. While the presence of pyroxenites has long been suggested in the source region of mantle-derived magmas, very ...
作者:Georges Ceuleneer , Florent Hodel
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2018, Vol.234, pp.1-23
摘要:Abstract(#br)The Maqsad area in the Oman ophiolite exposes a >300 m thick dunitic mantle-crust transition zone (DTZ) that developed above a mantle diapir. The Maqsad DTZ is primarily made of “pure” dunites (olivine with scattered chromite and chromite seams) and “impreg...
作者:Georges Ceuleneer , Mary-Alix Kaczmarek
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2019, Vol.516, pp.108-121
摘要:Abstract(#br)On Earth, most of the critical processes happen at the frontiers between envelopes and especially at the Moho between the mantle and the crust. Beneath oceanic spreading centers, the dunitic transition zone (DTZ) appears as a major interface between the upwelling and...
作者:... William L. Griffin , Hadrien Henry , Georges Ceuleneer
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2017, Vol.474, pp.490-502
摘要:Abstract(#br)Pyroxenites exposed in ophiolites and orogenic peridotite massifs may record petrogenetic processes occurring in mantle domains generated and/or transferred in supra-subduction environments. However, the timing of their formation and the geochemical characterist...
作者:Georges Ceuleneer , Nicolas Granier ...
来源:[J].LITHOS(IF 3.779), 2019, Vol.350-351
摘要:Abstract(#br)A stratiform chromite ore body crops out in the lower part of the dunitic mantle-crust transition zone (DTZ) that developed at the top of a mantle diapir in the Maqsad area in the Oman ophiolite. It is made of layers ranging in thickness from a few mm to a maxim...
作者:Georges Ceuleneer , Mathieu Rospabé ...
来源:[J].LITHOS(IF 3.779), 2018, Vol.312-313, pp.343-357
摘要:Abstract(#br)The igneous and mechanical processes controlling the formation of nodular chromite ore have been investigated through the study of a chromitite dyke emplaced in the uppermost part of the 330 m-thick dunitic mantle/crust transition zone that developed at the top ...
作者:... Mary-Alix Kaczmarek , Michel Grégoire , Georges Ceuleneer
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2017, Vol.472, pp.174-185
摘要:Abstract(#br)In the Herbeira massif, Cabo Ortegal Complex, Spain, a well exposed assemblage of deformed dunites and pyroxenites offers a unique opportunity to investigate key upper mantle tectonic processes. Four types of pyroxenites are recognized: clinopyroxenites with enc...
作者:Marie Python , Georges Ceuleneer , Shoji Arai
来源:[J].LITHOS(IF 3.779), 2008, Vol.106 (1), pp.137-154
摘要:Abstract(#br)This paper describes a comprehensive study of the chromian spinels present in mafic–ultramafic dykes cropping out along the mantle section of the Oman ophiolite. We studied about 1100 samples in thin section and with the electron microprobe. Chromian spinel is a...
作者:... Pierre Genthon , Georges Ceuleneer , Matthieu Hillairet
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2001, Vol.188 (3), pp.313-328
摘要:Abstract(#br)Most compaction models in the partially molten mantle have addressed the case of low intergranular melt concentrations (up to a few percent). Here we develop a mathematical and numerical formalism adapted to the two-dimensional modeling of compaction in mushes w...
作者:Mathieu Benoit , Mireille Polvé , Georges Ceuleneer
来源:[J].Chemical Geology(IF 3.154), 1996, Vol.134 (1), pp.199-214
摘要:Abstract(#br)This paper is devoted to an exploratory geochemical study (trace elements, SrNd isotopes) of a suite of cumulate features cropping out in the mantle harzburgites of Oman. The cumulates are concentrically distributed around a fossil mantle diapir. From the centr...

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