[1] The slip behavior of major faults depends largely on the frictional and hydrologic properties of fault gouge. We report on laboratory experiments designed to measure the strength, friction constitutive properties, and permeability of a suite of saturated clay-rich fault gouges, including: a 50:50% mixture of montmorillonite-quartz, powdered illite shale, and powdered chlorite schist. Fricti...

The Neogene-Paleogene glauconite sands are investigated in the framework of Belgian radioactive waste disposal as material for an additional sorption sink. Glauconite is Fe-rich phyllosilicate that mainly present 125–250 ?m sized pellets sand. Recent studies have shown a surprisingly strong radiocaesium (137Cs) on these sands, despite coarse pellet structure. This study was set up to characteri...

introduction: minerals are one of the main components of soils which play different roles in the soils. minerals make up about 50% of the volume of most soils. they provide physical support for plants, and create the water- and air-filled pores that make plant growth possible. mineral weathering releases plant nutrients which are retained by other minerals through adsorption, cation exchange, a...

Strontium is an important contaminant radionuclide at many former nuclear sites. This paper investigates the effect of changing pH and ionic strength on the sorption of Sr to a range of common soil minerals. Specifically it focuses on the sorption of Sr onto illite, chlorite, goethite, and a mixed sediment. The interplay between ionic strength and pH was determined by varying the background ion...

Abstract Hydrothermally altered rhyolite rocks in the Permian Donnersberg Formation of a geothermal borehole Northern Upper Rhine Graben (Germany) were investigated to find out answers for low hydraulic conductivity rocks. The composition clay minerals and temperature smectite–illite transformation carried using X-ray diffraction, fluorescence, transmission electron microscopy, Fourier transfor...