Carbonate leaching rates in several soils in Switzerland and in the Lake Constance region were calculated and related to landscape development. The leached depth of the soil, the carbonate content and the soil density profile are sensitive to soil
age. A first database of carbonate leaching and its relationship to soil age is presented. A simple relationship between the amount of precipitation and carbonate losses was found.
Modellvorstellungen zur Dynamik der Auslaugungsprozesse des Zechsteinsalzes in den Saxoniden der DDR. (Model conceptions of the dynamics involved in the zechstein salt leaching processes in the saxonides of GDR)
Ground-water reservoirs with stagnation brine, where liquid moves in the top layer only, come into existence in the course of natural salt leaching. Diffusion from the dormant liquid towards the flowing ground-water has to be considered
as the driving force for the continuation of the leaching process. The following conclusions can, among others, be drawn: The natural salt leaching proceeds as present so slowly that, apart from residual hollows in the overlying rock, there are no temporal
or spatial consequences in the way of terrain subsidence. Leaching is intensified when the hydrogeological regime is disturbed (mining drainage). When drainages stops, the original state is restored after a major period only. Gypsum leaching proceeds almost
The results of a two-year lysimeter investigation into the effects of fertiliser nitrogen (N) combined with pig or cattle slurry applied in winter or early spring on nitrate (NO3-N) leaching are presented. Soil type, fertiliser N and a combination
Flow and chemical composition of drainage water from farmland in the Belgian loamy region. Part 2. Patterns of irons leaching with particular reference to nitrate
The nitrate quality limit of 50 mg NO3/l could be exceeded in the autumn, winter or spring, depending on the soil mineral nitrogen content and rainfall. Nitrogen leaching losses were related to rainfall distribution and agricultural practices
. They were lower for land under cereals than under sugar-beets. When the available nitrogen for leaching was high, nitrate and chloride were not leached together. At this moment, the NO3 concentration was positively related with the flowrate and the Ca
Leaching of aluminium from the weathering profile of the African surface in Malawi was deduced from the chemistry of a vadose profile. Its loss occurs where congruent kaolinite dissolution results in saprolite collapse, leaving a weakly lateritized
, sandy residual mantle. This leaching is a contemporary process, as shown by the precipitation of aluminosilicate evaporites in the dambos. This paper presents the results of determinations, by ICP-OES and AAS-graphite furnace, of aluminium levels
A three-year investigation into the effects of nitrogen (N) fertiliser rates and rainfall on nitrate-N (NO3-N) leaching from spring barley and Fallow was carried out in a lysimeter unit. The soils was well drained, moderately deep and similar
Arizona ; Experimental catchment ; Geochemistry ; Grain size distribution ; Leaching ; Soil ; Soil erosion ; Soil properties ; Trace-element ; Tracer ; United States of America
A leaching experiment using 5 REE oxides and gravelly, sandy loam soils was conducted and the leaching and binding characteristics of the oxides for the soils were examined. The experiment showed little leaching of the oxides and an enrichment
In this report, the AA. attempted to determine if extractable Fe, Al, and Mn provide age-dependent trends, evidence for downward movement, and leaching signals that relate the paleoclimatic influences. They also sought to determine the relative
Catena ; England ; Hydrochemistry ; Leaching ; Podsol ; Soil ; Solution load ; Somerset ; Spatial variation ; United Kingdom ; Water quality ; Watershed
assumption underlying this research is that the amount of exchangeable cations in soils reflects the nutrient stores and cation leaching processes across the slope where vegetation and parent materials are similar.
. The mineralogical nature of a newly formed product depends mainly on the intensity of the leaching to which the profile is subjected, which is influenced by the rainfall in the area where they are found, as well as the size of existing voids in the material.
A study was carried out on a structured soil in the south-east of Ireland to investigate flow patterns of water in soil. The results provided preliminary evidence for preferential flow in the soil. Nitrate leaching data, from a grazing study, tended
Preglacial weathering. Two stages have been recognized in the weathering process. The first stage is characterized by granular disintegration followed by the subsequent alteration of biotite into vermiculite, and leaching of K, Na and Mg. During
the second weathering stage plagioclase is altered into kaolinite, and the breakdown of dark minerals promotes leaching of Ca, Na, Fe and Mg. The residue has been slightly enriched in K-feldspar, quartz and clay minerals. Si and Al have not dissolved during