Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
Waples, D. W. Basin modelling: how well have we done?
Giles, M. R., Indrelid, S. L. & James, D. M. D.: Compaction - the great unknown in basin modelling
Okui, A., Siebert, R. M. & Matsubayashi, H.: Simulation of oil expulsion by 1-D and 2-D basin modelling - saturation threshold and relative permeabilities of source rocks
Waples, D. W. & Couples, G. D.: Some thoughts on porosity reduction - rock mechanics, overpressure and fluid flow
Tokunaga, T., Hosoya, S., Tosaka, H. & Kojima, K.: An estimation of the intrinsic permeability of argillaceous rocks and the effects on long-term fluid migration
Darby, D., Haszeldine, R. S. & Couples, G. D.: Central North Sea overpressures: insights into fluid flow from one- and two-dimensional basin modelling
Throndsen, T. t~ Wangen, M.: A comparison between l-D, 2-D and 3-D basin simulations of compaction, water flow and temperature evolution
Archard, G., Stafford, J., Bardwell, K. & Bagge, M.: A review of techniques used to determine geological and thermal history in the Southern North Sea
Schegg, R. & Leu, W.: Analysis of erosion events and palaeogeothermal gradients in the North Alpine Foreland Basin of Switzerland
Hegre, J. A., Pittion, J. L., Herbin, J. E & Lopatin, N. V.: Geochemical modelling in an organicrich source rock: the Bazhenov Formation
Symington, W. A., Green, K. E., Huang, J., Poyrorf, R. J. & Summa, L. L.: A multidisciplinary approach to modelling secondary migration: a Central North Sea example
Ho, T. T. Y., Jensen, R. R, Sahai, S. K., Leadholm, R. H. & Senneseth, O.: Comparative studies of pre- and post-drilling modelled thermal conductivity and maturity data with post-drilling results: implications for basin modelling and hydrocarbon exploration
Thomsen, R. O.: Aspects of applied basin modelling: sensitivity analysis and scientific risk
Gallagher, K. & Morrow, D. W.: A novel approach for constraining heat flow histories in sedimentary basins
On s’accorde aujourd’hui d’une façon assez générale pour reconnaître que la bauxite ou minerai d’aluminium représente le produit d’altération atmosphérique ultime de roches alumineuses très diverses. C est donc une matière résiduelle, conservée sur des surfaces continentales, formée dans des régions où les conditions climatiques sont particulièrement favorables et dont le relief est peu accidenté.
This book aims to present an accurate survey of the current state of our knowledge regarding the mineralogy, geochemistry, geology and genesis of bauxite deposits, and to discuss unsolved problems as necessary for teaching and research. For mining engineers and economic geologists the book contributes to a better understanding of the genesis and distribution of different types of deposits. <...>
The surface of the earth is covered by two contrasting media; land and sea. They meet at the coast. There are, of course, glaciers that span parts of both the land and sea such as in Greenland, Iceland, parts of Alaska and the Canadian Arctic, and on Antarctica. Each of these two surfaces may cover millions of square kilometers over continents and oceans or much less in the case of small oceanic islands or some lakes within continental masses. Nevertheless, a narrow coastal zone separates these two major parts of the earth’s surface.
The carstic bauxite deposits of the western flange of the Turgai trough are investigated in geological, petrological, mineralogical, and morphological aspects, as well as to the chemical composition. Special attention was paid to the so-called »beans«, inclusions in the cement of the stony bauxites of that region. These beans have an average diameter from 2 to 20 mm, greater ones are rare, and so are varieties smaller than 1 mm. Structurally, they consist of a gray ferrum-alumi-nium core around which a black coating of alumina-ferruginous matter is wrapped. The inner composition of the beans was examined very carefully in every respect, and on that base some new suggestions about their genesis was put forward.
Energy costs represent a significant component of the total costs of operations for Canada’s mining sector. Directly and indirectly, the energy use in the mining sector is also a significant contributor to Canada’s greenhouse gas emissions. Improving energy efficiency reduces greenhouse gas emissions that contribute to climate changes.
Phosphate rock is an important mineral commodity used in the production of phosphoric acid. The majority of phosphoric acid is produced by the “wet process,” in which phosphate rock is reacted with sulfuric acid to produce phosphoric acid and gypsum (calcium sulfate dihydrate). The wet process demands a phosphate rock feed that meets certain specifications in order to produce phosphoric acid efficiently and economically.
Water supply is critical for ensuring optimal operation of any beneficiation plant. As ore quality continues to decline, the demand on water for mineral processing will only increase. Traditionally, ground and surface water sources have been extensively utilized for mining and beneficiation. In some regions, these sources are proving to be insufficient to meet the increasing demands of this industry, as well as the local municipal requirements. As a result, alternate water supplies must be considered. The purpose of this investigation was to develop a collector that allows for the flotation of phosphate in sea water, while still meeting the grade (>27.5% P2O5) and recovery (>80%) criteria. <...>
Have you tried to walk across a farmer’s field in Montmorillon in France on a rainy October day? Marcel and Bertrand, his father, tried to do so in the fall of 1881 with fatal consequences. We will return to this terrible true story in the first chapter of this book for explaining how the soil at this place made it happen, continuing throughout the rest of the book by explaining how the dreadful soil, in fact, also has extremely beneficial properties in other contexts, like isolation of very hazardous waste.
