Results 1 to 10 of about 25,858 (276)
Insight into drilling performance parameters for in-situ detection of lithological transition [PDF]
In 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
doaj +2 more sources
Fossilized Melts in Mantle Wedge Peridotites [PDF]
The shallow oxidized asthenosphere may contain a small fraction of potassic silicate melts that are enriched in incompatible trace elements and volatiles.
Kosuke Naemura+4 more
doaj +4 more sources
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
doaj +1 more source
Atomic structure and physical properties of peridotite glasses at 1 bar
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
doaj +1 more source
Melt–rock interactions in a veined mantle: pyroxenite–peridotite reaction experiments at 2 GPa [PDF]
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
doaj +1 more source
Ultramafic xenoliths from the Bearpaw Mountains, Montana, USA: evidence for multiple metasomatic events in the lithospheric mantle beneath the Wyoming craton [PDF]
Ultramafic xenoliths in Eocene minettes of the Bearpaw Mountains volcanic field (Montana, USA), derived from the lower lithosphere of the Wyoming craton, can be divided based on textural criteria into tectonite and cumulate groups. The tectonites consist
Abidin, M.S.Z.+11 more
core +4 more sources
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
doaj +1 more source
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
doaj +1 more source
Ophiolite-hosted diamond from peridotites and podiform chromitites significantly differs from those of kimberlitic diamond and ultra-high pressure (UHP) metamorphic diamond in terms of occurrence, mineral inclusion, as well as carbon and nitrogen ...
Fei Liu+3 more
doaj +1 more source
Petrology of some oceanic island basalts: PRIMELT2.XLS software for primary magma calculation [PDF]
PRIMELT2.XLS software is introduced for calculating primary magma composition and mantle potential temperature (TP) from an observed lava composition. It is an upgrade over a previous version in that it includes garnet peridotite melting and it detects ...
Asimow, Paul D., Herzberg, C.
core +2 more sources