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Proterozoic of the North Atlantic in Evolution of the Earth's crust.
  • Proterozoic of the North Atlantic in Evolution of the Earth's crust.
Thermal effects of basalt on continental crust and crustal contamination of magmas
  • Thermal effects of basalt on continental crust and crustal contamination of magmas
The Bushveld Complex in Evolution of the Earth's crust.
  • The Bushveld Complex in Evolution of the Earth's crust.
Mesozoic complementary crust in the North Atlantic
  • Mesozoic complementary crust in the North Atlantic
Peloritani Continental Crust composition (Southern Italy) : geological and petrochemical evidence
  • Peloritani Continental Crust composition (Southern Italy) : geological and petrochemical evidence
  • Calabria ; Continental crust ; Geochemistry ; Italy ; Petrography ; Regional geology ; Tectonics
  • This paper reconstructs the State of the Art on the Peloritani Crust (Southern Italy). It illustrates the geometry, the real extension, petrographic and geochemical compositions and the techtono-metamorphic evolution of its terrains, with special
An experimental study on the susceptibility of crusted surfaces to wind erosion : a comparison of the strength properties of biotic and salt crusts
  • An experimental study on the susceptibility of crusted surfaces to wind erosion : a comparison of the strength properties of biotic and salt crusts
Effects of peat content, rainfall duration and aggregate size on soil crust strength
  • Effects of peat content, rainfall duration and aggregate size on soil crust strength
  • This paper investigates the effect of the incorporation of organic matter in the form of peat on soil crust strength and adopts an interactive approach to study the effects of soil organic matter content, rainfall duration, and aggregate size
  • , and their interactions on crust strength. The aim was to increase the understanding of the effect of organic matter particularly in the form of peat, on soil crust strength.
Properties of surface crusts of an andisol and their effects on soil-hydrological processes
  • Properties of surface crusts of an andisol and their effects on soil-hydrological processes
  • Soil surface sealing and crusting
  • In this study, changes in the structure and physical properties of the surface crust of an Andisol, especially during the rainfall, were measured by using a rainfall simulator, and effects of surface crust on hydrology and soil erodibility
The effect of drying on runoff and interrill erosion of crusted soils
  • The effect of drying on runoff and interrill erosion of crusted soils
  • Soil surface sealing and crusting
  • This study evaluates the effect of drying on runoff and erosion rates of three southeastern US soils of varying crusting potential over consecutive rainstorms, in order to assess the effect of drying on long-term crust stability, runoff/infiltration
Tensile test of natural microbiotic crust
  • Tensile test of natural microbiotic crust
  • The mechanical properties of microbiotic crust are important to stabilize sandy surfaces in arid and semi-arid regions. The AA. developed a new experimental approach to perform the tensile test of natural microbiotic crust and then investigated
  • the mechanical property. The result of tensile test was applied to the study of the rupture of microbiotic crust under the impact of one saltating grain.
Physical characterization, spectral response and remotely sensed mapping of Mediterranean soil surface crusts
  • Physical characterization, spectral response and remotely sensed mapping of Mediterranean soil surface crusts
  • The AA. studied the occurrence of crusts in a study area in Mediterranean southern France. Their aims were to compare the physical and hydrological properties of the crusts and underlying soil, to identify the spectral characteristics (400 to 2500
  • nm) of the crusted and non-crusted soil surfaces using high-resolution field spectra, and to investigate the potential of mapping crust occurrence using airborne, hyperspectral HyMap images. The differences in some physical properties between crusted
  • and non-crusted surfaces are significant while others are only marginal. Crusts could be mapped in fallow, agricultural fields, but the spectral response of natural badlands was too fragmented for crust mapping.
Stroenie Meksikanskogo glubokovodnogo bassejna i sravnenie ego s Prikaspijskoj vpadinoj
  • Atlantic Ocean ; Caspienne Sea ; Earth crust ; Geological structure ; Geophysics ; Gulf of Mexico ; Ocean basin
Ofiolitovye sutury Vnutrennej Mongolii
  • Geological structure ; Geophysics ; Mongolia ; Oceanic crust ; Ophiolite ; Tectonics
  • des paléo-océans, marquant les zones de collision des éléments tectoniques d'âge différent de la zone. 2 approches pour l'interprétation de la structure et de l'évolution tectonique. Il a existé ici non pas une structure océanique de longue durée, mais
Bulk density of surface crusts : depth functions and relationships to texture
  • Bulk density of surface crusts : depth functions and relationships to texture
  • This study attempts to measure the bulk densities of crusts with a high resolution in depth 1) to provide data on crust densities for a wide range of soil types, 2) to test the above models, and 3) to verify whether the crust bulk density can
  • be related to other, more easily determined soil parameters such as texture. The crust samples used in this study were obtained from a broader study aimed at characterising the effect of sealing on infiltration and sediment yield properties of representative
Fabric analysis of surface crusts developed under simulated rainfall on loess soils, China
  • Fabric analysis of surface crusts developed under simulated rainfall on loess soils, China
  • A detailed microfabric analysis of surface seal and crust developed under controlled conditions was conducted to establish the timing and sequence of events. The specific objectives of this investigation are : a) to study the micromorphology
  • and the dynamics of fabric rearrangement during crusting development under simulated rainfall and thus to determine the subprocesses of crust development; and b) to relate fabric rearrangements to crust strength variations.
Effects of surface crusting and slope gradient on soil and water losses in the hilly loess region, North China
  • Effects of surface crusting and slope gradient on soil and water losses in the hilly loess region, North China
  • Soil surface sealing and crusting
  • This paper reports a set of field rainfall simulation experiments conducted in the hilly loess region, North China designed to investigate the effects of surface crusting and slope gradient on soil and water losses. Specifically, the objectives
  • are 1) to determine the effects of antecedent crusting and sealing on soil and water losses under simulated rainfall; and 2) to establish the influence of slope gradient on soil and water losses under crusted and uncrusted conditions.
Effects of microbiotic crusts under cropland in temperate environments on soil erodibility during concentrated flow
  • Effects of microbiotic crusts under cropland in temperate environments on soil erodibility during concentrated flow
  • To study the effect of microbiotic soil crusts on soil erosion resistance of loess-derived soils under cropland during concentrated runoff, two study areas in central Belgium were selected in the vicinity of the cities of Leuven and Sint-Truiden
  • . The soils in both areas developed on the loess that covers Tertiary sandy deposits. Three stages of microbiotic crust development on cropland soils are distinguished. The results suggest that the possible magnitude of the microbiotic soil crust effect
  • is not negligible compared with the effect of vegetation ground cover. Microbiotic crusts thus help conserve soils.
Permanence of soil surface crusts on abandoned farmland in the Central Ebro Basin/Spain
  • Permanence of soil surface crusts on abandoned farmland in the Central Ebro Basin/Spain
  • The aim of this study is to show the consequences of crust formation on areas of fallow land on the surface runoff and soil erosion. Thin sections were used to analyse the development and structures of the different crusts found across the ridge
  • /furrow field pattern. Rainfall simulations experiments and infiltration measurements show the runoff generation and the soil erosion rates on the crusts. The spatial distribution of crusts was documented using large-scale aerial photographs.
Wind erosion of crusted soil sediments
  • Wind erosion of crusted soil sediments
  • This paper describes a number of experiments which formed a pilot examination of the abrasion and possible break-up of several artificially crusted sediments and of the release of surface particles from fine unaggregated material, resulting from
  • impact by saltating grains. The experiments with unaggregated material were carried out in order to examine the effect of saltating grains on the detachment of particles having a minimum cohesion in comparison to crusted surfaces. The crust experiments
  • assessed the break-up of crusts of differing strengths in relation to the flux of saltating particles.
Microgeometrical characterisation and percolation threshold evolution of a soil crust under rainfall
  • Microgeometrical characterisation and percolation threshold evolution of a soil crust under rainfall
  • An experiment has been carried out in order to both measure the unsaturated hydraulic conductivity of a soil crust when it is developing and to characterize its macro- and microstructural evolution. Five stages of a structural crust developing
  • in a loamy clay soil have been identified. Mercury intrusion experiments and micromorphological descriptions have provided information on the structural evolution of the crust at the microscale. Both the structural information given by the chord size
  • distribution and the functional information obtained from the percolation threshold can be related to propose a new model of soil crusting.