introduction: soil genesis and development in arid and semi-arid areas are strongly affected by geological formations and geomorphic surfaces. various morphological, physical, and geochemical soil properties at different geomorphic positions are usually attributed to different soil forming factors including parent material and climate. due to variations in climate, geological formations (quater...

It has long been recognized that the minerals in the clay (<2 gm) fractions of soils play a crucial role in determining their major physical and chemical properties, and inevitably, questions concerning the origin and formation of these minerals have assumed some prominence in soil science research. This review considers some important aspects of these questions and is confined to clay minerals...

79Se is a critical radionuclide concerning the safety of deep geological disposal certain radioactive wastes in clay-rich formations. To study fate selenium oxyanions clayey rocks presence reducing microbial community, situ tests were performed Opalinus Clay at Mont Terri Rock Laboratory (Switzerland). Furthermore, biotic and abiotic batch to assess Se(VI) Se(IV) reactivity and/or stainless ste...

The study of uranium-series (U-series) isotopes in soil and sediment materials has been proposed to quantify rates and timescales of soil production and sediment transport. Previous works have studied bulk soil or sediment material, which is a complex assemblage of primary and secondary minerals and organic compounds. However, the approach relies on the fractionation between U-series isotopes i...

Borehole radar can be used in a single-hole reflection mode or in a cross-hole tomography mode. In the reflection mode, radar provides an image of discontinuities in the bedrock surrounding a borehole, including bedding planes, lithologic contacts, fractures, and cavities. The measurements are either directional or omnidirectional, depending upon the type of equipment and antennas. In the tomog...

To assess how the grain size/rock fabric of laboratory-matured shale samples impact oil, gas production, and formation pores during laboratory thermal maturation, cores (4.5 mm*1 cm) bulk rock, millimetric equidimensional rock fragments (3*3 mm), fine grind powder (<200 μm) were obtained from an organic-rich mudstone (Kimmeridge Clay Fm. “KCF”, Yorkshire, UK) artificially matured under anhydrou...

SUMMARY Low permeability, high retention capacity and self-sealing ability are advantageous characteristics that attributed to argillaceous rocks. In contrast, other properties of clay, such as internal heterogeneities, strong attenuation anisotropic behaviour, pose major challenges for underground exploration techniques. Although with regard the storage nuclear waste, seismic in itself is grea...