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| Jacobs, P.; De Ceukelaire, M.; Sevens, E.; Verschuren, J.. |
| The most recent detailed geological map of Belgium (scale 1:40000) dates from the turning of the century. The Belgian Geological Survey and the Directorate of Natural Resources and Energy of the Flemish Ministry of Economic Affairs commissioned a new geological map scale (1:50000) to the Geological Institutes of the Universities of Gent and Leuven, to be drawn on basis of the archives of the Geological Survey, completed with data provided by licenciate and Ph.D. theses, publications, internal reports,… As it was the commissioners' aim the new geological map to have a greater applicability and to be highly user friendly, the option was taken to adopt lithostratigraphical units as the basal mapping units, enabling secondary economical and planning survey... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geological surveys Methodology Tertiary ANE; Belgium; Flemish Banks Belgium; Flanders. |
| Ano: 1994 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2605 |
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| Henriet, J.-P.; De Batist, M.; Verschuren, J.. |
| Argillaceous petroleum source-rocks often show evidence of fracturing, which is considered to be an important factor for the primary migration of hydrocarbons. Several authors consider overpressuring of the enclosed pore fluids at great burial depths as a major factor for the generation of microfractures, through the mechanism of hydrofracturing. Various scales of fracture networks have been observed in Palaeogene clays which have never reached burial depths, greater than a few hundreds of meters. High-resolution seismic reflection investigations carried out in the southern North Sea have revealed large-scale fracturing patterns, confined to the London/Ieper clays. Equivalent deformation and microfracturing have been observed at outcrops on land.Field... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1991 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2798 |
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| Verschuren, J.. |
| Some new ecological observations in the littoral area of Senegal are added to a previous and more detailed paper by the author. An aggravation of the marine pollution near Dakar is established. The Senegalese population is continuously respecting the bird fauna. In the national park "Basse Casamance" a large number of tree species has suffered, sometimes irreversibly, by drought during successive years. Near Dakar kites have completely eliminated vultures. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1989 |
URL: http://www.vliz.be/imisdocs/publications/303570.pdf |
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