The thermal conductivity, thermal diffusivity and heat capacity per unit volume of dunite rocks taken from Chillas near Gilgit, Pakistan have been measured simultaneously using transient plane source technique. The temperature dependence of thermal transport properties is studied in the temperature range 83-303 K. Different relations for the estimation of thermal conductivity are also tested. T...

Abstract Background and aim The use of amendments to immobilize metals in polluted soils is a widely accepted remediation approach, the framework circular economy, produced from mining and/or biomass waste have gained relevance. However, application such can also mobilize metalloids. Here we propose combination nanoscale zero-valent iron nanoparticles (nZVI) with dunite (mining waste) compost f...

Recent information from experimentally deformed dunite coupled with a reanalysis of data on the Fennoscandian postglacial rebound suggest that the rheological behavior of the upper mantle is distinctly non-Newtonian, and that the shear strain rate is proportional to the shear stress raised to about the third power.

Most Hawaiian basaltic shield volcanoes are capped by moderately to strongly evolved alkalic lavas (MgO < 4.5 wt. %). On M auna Kea Volcano the cap is dominantly composed of hawaiite with minor mugearite. Although these lavas contain dunite and gabbroic xenoliths, they are nearly aphyric with rare olivine and plagioclase phenocrysts and xenocrysts. The hawaiites are nearly homogeneous in radiog...

Introduction: Twelve Martian meteorites that have been recovered so far are classified into five groups (basalt, lherzolite, clinopyroxenite, dunite, or-thopyroxenite) mainly from petrology and chemistry [e.g., 1]. Among them, the dunite and orthopyroxenite groups consist of only one meteorite, respectively (dunite: Chassigny, orthopyroxenite: ALH84001). The basalt group is the largest group an...

We review physical and chemical constraints on the mechanisms of melt extraction from the mantle beneath mid-ocean ridges. Compositional constraints from MORB and abyssal peridotite are summarized, followed by observations of melt extraction features in the mantle, and constraints from the physical properties of partially molten peridotite. We address two main issues. (1) To what extent is melt...

[1] Ultramafic xenoliths of spinel dunite, harzburgite, lherzolite, amphibole/phlogopite-bearing pyroxenite, and clinopyroxenite occur in andesitic pyroclastic debris from the 1964 eruption of Shiveluch volcano, Kamchatka. Peridotites have coarse/protogranular, porphyroclastic, and granuloblastic textures, abundant kink-banded olivine, and refractory mineral compositions with forsteritic olivin...