Results 1 to 10 of about 7,035 (166)
Insight into drilling performance parameters for in-situ detection of lithological transition [PDF]
Scientific ReportsIn order to examine the rock dependence on drilling performance parameters, such as torque and rate of penetration (ROP), we conducted laboratory drilling experiments using mafic and ultramafic rocks from the Oman ophiolite and the Horoman Complex ...
Kazumasa Tanimoto +2 more
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Evidence of ghost plagioclase signature induced by kinetic fractionation of europium in the Earth’s mantle [PDF]
Nature Communications, 2023 Researchers found natural evidence of kinetic Eu anomalies caused by melt-induced diffusion in mantle peridotite clinopyroxene, providing an alternative to crustal recycling for the enigmatic ghost plagioclase signatures in oceanic basalts.
Romain Tilhac +3 more
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Quartz-bearing rhyolitic melts in the Earth’s mantle [PDF]
Nature Communications, 2022 The paper reports the occurrence of quartz-bearing rhyolitic melt inclusions and interstitial glasses within peridotite xenoliths. Their O-isotope composition proves crustal derivation and cycling into the mantle at convergent plate margins.
Luigi Dallai +7 more
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Vertical depletion of ophiolitic mantle reflects melt focusing and interaction in sub-spreading-center asthenosphere [PDF]
Nature Communications, 2022 Upward depletion of ophiolitic mantle is produced by melt-peridotite reaction with lateral melt/rock ratio variations in an asthenospheric upwelling column, which flows to become the horizontal oceanic lithospheric mantle under spreading centers.
Qing Xiong +6 more
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Geosciences, 2021 Dynamic metasomatism experiments were performed by reacting a lamproite melt with garnet peridotite by drawing melt through the peridotite into a vitreous carbon melt trap, ensuring the flow of melt through the peridotite and facilitating analysis of the
Stephen F. Foley, Maik Pertermann
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Melt–rock interactions in a veined mantle: pyroxenite–peridotite reaction experiments at 2 GPa [PDF]
European Journal of Mineralogy, 2022 Interaction between peridotite and pyroxenite-derived melts can significantly modify the mineralogy and chemistry of the upper mantle, enhancing its heterogeneity, by creating re-fertilized peridotites and secondary-type pyroxenites.
G. Borghini, P. Fumagalli, E. Rampone
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Solubility of water in peridotite liquids and the prevalence of steam atmospheres on rocky planets [PDF]
Earth and Planetary Science Letters, 601, 117894 (2022), 2022 Atmospheres are products of time-integrated mass exchange between the surface of a planet and its interior. On Earth and other planetary bodies, magma oceans likely marked significant atmosphere-forming events, during which both steam- and carbon-rich atmospheres may have been generated. However, the nature of Earth's early atmosphere, and those around
arxiv +1 more source
Atomic structure and physical properties of peridotite glasses at 1 bar
Frontiers in Earth Science, 2023 Earth’s mantle, whose bulk composition is broadly peridotitic, likely experienced periods of extensive melting in its early history that formed magma oceans and led to its differentiation and formation of an atmosphere. However, the physical behaviour of
Charles Le Losq +2 more
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Geochemistry, Geophysics, Geosystems, 2023 We present data for lithospheric mantle xenoliths sampled from two alkali basalts in south‐central Vietnam, Pleiku and Xuan Loc, including fertile spinel peridotites.
Kirby P. Hobbs +4 more
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Geochemistry, Geophysics, Geosystems, 2021 Orthopyroxene was analyzed as a proxy for water supra‐subduction‐zone peridotite by polarized infrared radiation. Samples from Conical and Torishima seamounts, Mariana‐Izu‐Bonin forearc (ODP‐Leg 125), have very similar average H2O contents of 215 ppm ...
J. Gose, E. Schmädicke
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