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Academic literature on the topic 'Terre – Manteau supérieur – Chine'
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Journal articles on the topic "Terre – Manteau supérieur – Chine"
Kerr, Andrew. "Classic Rock Tours 2. Exploring a Famous Ophiolite: A Guide to the Bay of Islands Igneous Complex in Gros Morne National Park, Western Newfoundland, Canada." Geoscience Canada, October 31, 2019, 101–36. http://dx.doi.org/10.12789/geocanj.2019.46.149.
Full textDissertations / Theses on the topic "Terre – Manteau supérieur – Chine"
Xu, Yigang. "Hétérogénéïté du manteau supérieur sous l'est de la Chine : faille de Tanlu et régions adjacentes : les enclaves de péridotites dans les basaltes cénozoïques." Paris 7, 1994. http://www.theses.fr/1994PA077107.
Full textChen, Huan. "The rôle of the Pacific subduction in the genesis of Cenozoic basalts in eastern China : New constrains from water content and oxygen isotope composition." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10019/document.
Full textThis work is focused on the role of the Pacific subduction on the genesis of the Cenozoic continental basalts in eastern China, based on the approaches of the water contents (analyzed by Fourier transform infrared spectroscopy (FTIR)) and oxygen isotope compositions ( analyzed by Secondary ion mass spectrometry (SIMS)).The δ18O values of cpx phenocrysts in the Shuangliao basalts range from 4.10‰ to 6.73‰, which provides a strong evidence for the contribution of recycled oceanic crust (ROC) in the mantle source. Combined with the high H2O content and H2O/Ce ratios of the “primary” magma (0.90-3.06 wt.%, 158-737), the contribution of water-rich sediment component has also been suggested. Unlike the Shuangliao basalts, the Wulanhada basalts have lower H2O contents (0.21-0.69 wt.%). The high oxygen isotope compositions (5.49-7.38 ‰) and the correlations of H2O/Ce with 87Sr/86Sr, Ba/Th, Nb/La, Nb/U and Ce/Pb ratios indicate that the contributions of a significantly dehydrated sediments and ROC to the mantle source. In Chaihe-aershan basalts, the δ18O values of cpx phenocrysts and the H2O contents of “primary” magmas vary widely (4.27-8.57‰, 0.23-2.70 wt.%).Three components (altered upper oceanic crust and marine sediments, altered lower gabbroic oceanic crust, ambient mantle) have been identified in the mantle source based on the relations between δ18O values of the cpx phenocrysts, H2O/Ce and Ba/Th ratios and the Eu anomaly of bulk rock. For the Xiaogulihe ultrapotassic volcanic rocks, the estimated H2O contents and H2O/Ce ratios are low (0.36-0.50 wt%, ~15). Combined with the high δ18O values of olivine phenocrysts, the low 206Pb/204Pb ratios and moderately high 87Sr/86Sr ratios of the bulk rock, we concluded that highly dehydrated ancient sediments could be a most likely candidate for the K-rich component in the mantle source
Counil, Jean-Louis. "Contribution du géomagnétisme à l'étude des hétérogénéités latérales de la croûte et du manteau supérieur." Paris 7, 1987. http://www.theses.fr/1987PA077284.
Full textInsergueix, Delphine. "Modélisation numérique de la lithosphère en subduction dans le manteau supérieur terrestre." Paris 11, 1997. http://www.theses.fr/1997PA112268.
Full textNolasco, Maria Rita. "Sondages éléctromagnétiques en domaine océanique appliqués à l'étude du manteau supérieur en contexte de point chaud intraplaque." Brest, 1998. http://www.theses.fr/1998BRES2038.
Full textLévêque, Jean-Jacques. "Etude du manteau supérieur de la terre par inversion anisotrope des ondes de surface et de leurs harmoniques." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13028.
Full textGranet, Michel. "Tomographie de la croûte et du manteau supérieur déduite des signaux sismologiques courtes périodes et algorithmes de traitement des données ReNaSS." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13018.
Full textGibert, Benoit. "Etude expérimentale de la diffusion thermique dans les monocristaux d'olivine et dans les roches du manteau supérieur." Montpellier 2, 2003. https://tel.archives-ouvertes.fr/tel-00007214.
Full textBollinger, Caroline. "Rhéologie de l’olivine polycristalline aux conditions du manteau supérieur : étude en D-DIA." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10038/document.
Full textThis manuscript presents an experimental investigation of the effect of pressure on the rheology of olivine and forsterite. Indeed, the geodynamics of the Earth’s interior is not always well understood and needs input for experimental data. The movements of materials in the Earth mantle induce plastic deformation of the constitutive minerals and, particularly, are connected to the rheology of olivine, the main constituent of the upper mantle. Polycristalline olivine and forsterite are deformed in D-DIA at pressure-temperature conditions of the upper mantle, from 3 to 8 GPa and 1373-1673 K. Coupled with synchrotron radiations, applied stresses and developed lattice preferred orientations are measured in situ, with the addition of transmission electron microscopy observations on the run products. From these experimental data, rheological laws have been determined in dislocation-creep regime, under “wet” conditions and below 8GPa for both of these minerals. Pressure effect is observed with an activation volume of 12.8 ± (5) cm3.mol-1 for olivine. For forsterite, this parameter is 12.5 ± 5 cm3.mol-1, with a stress-exponent of n’= 2.35 (0.6). The water influence is apparently not significant compared to the pressure effect, and the iron-bearing olivine is more ductile than iron-free olivine.Developed textures show a dominant slip-system along the (010) plane below 8 GPa. Above, textures are weaker, leading to the conclusion that others slip-systems and/or deformation mechanisms take a part in the plasticity of the olivine. This transition is well correlated with the decreasing of the observed seismic anisotropy of the upper mantle below -200 km
Mocquet, Antoine. "Structure tri-dimensionnelle du manteau supérieur sous l'océan atlantique d'après l'étude des ondes de Rayleigh longue période." Rennes 1, 1988. http://www.theses.fr/1988REN10136.
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