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Le drame de l’Aral: sa complexité
L’exemple de l’Aral est significatif d’un plan d’aménagement qui aurait pu donner de bons résultats si, à chaque étape, la conception, la décision,...
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Sources of Suspended Matter
The amount of water in the sea is 1.37 x 109 km3, which is ca. 94% of all water in the hydrosphere (van der Leeden 1975; Degens 1989). In rivers and...
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Manganese Supply to the Ocean
Manganese and other elements are supplied to the ocean from various sources and by various routes. Continental massifs and the Earth’s interior under...
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How to Establish and Use World Budgets of Riverine Materials
Average river water composition is often taken as a reference of surface water chemistry (Stumm and Morgan, 1981), and global river inputs have been...
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USSR--Black, Azov, Caspian, and Aral Seas
Local changes in the nature of near-shore environments are almost exclusively caused by man’s technical intervention near and, in some instances,...
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Manganese in Marine and Oceanic Sediments
The study of manganese in oceanic bottom sediments, with which manganese nodules are genetically associated in one way or another, was started after...
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Sources of Organic Matter in the Ocean
Organic compounds, which are present in every drop of ocean water, in every particle of suspended material, have either been first created in the...
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Geopedological Examples
All maps but one illustrating this chapter were computer-produced on the original approximate scale of 1:1000000 which is the greatest possible...
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P-CaCO3-MgCO3-SiO2 Deposition in Weakly Mineralized Basins of Arid Zones
In the description of lithogenesis in humid zones (Vol. 2), brief reference was made to the specific features that distinguish the history of...
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Terrigenous Sedimentation in Arid Zones and its Features
The concept of “deposits of arid zones” is generally associated with the idea of saline rocks, forming from more or less mineralized waters. This...
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Stages of Humid-Climate Lithogenesis
The formation of sedimentary rocks may be reduced, in its most general form, to the following scheme: mobilization of substances by weathering of...
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Aridity and Salinity
The arid zones of the world are characterized by the minimum of annual precipitation and the maximum of heat and aridity. The precipitation in arid...
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Grain-Size Sorting of Sandy Silts and Clayey Sediments of Various Facies Types
One of the most characteristic features of deposits in humid zones is the more or less clearly defined sorting of material according to grain size....
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Distribution and Accumulation of Clastic and Clay Minerals in Deposits of Various Facies Types
Since fragmental grains are characterized by specific mineralogical composition, as well as by size and specific gravity, grain-size sorting involves...