References of "Ek, Camille"
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See detailCarbon dioxide in cave atmospheres. New results in Belgium and comparison with some other countries.
Ek, Camille ULg; Gewelt, Michel

in Earth Surface Processes & Landforms (1985), 10

More than 600 measurements of the carbon dioxide content of cave air in Belgium lead up to the conclusion that the main factors of its distribution are: (1) a flow originating from the biomass and ... [more ▼]

More than 600 measurements of the carbon dioxide content of cave air in Belgium lead up to the conclusion that the main factors of its distribution are: (1) a flow originating from the biomass and diffusing in the soil and the voids of bedrock; (2) a trend, discernible in very still air only, to go down by density; (3) in some caves, draughts caused, for instance, by a swift underground stream. Results in Belgium are compared with published and unpublished data from other countries, showing that CO2 is often less abundant in cold climate caves and in caves of semi-arid regions (influence of the biomass). Special attention is paid to human contamination during analyses: the influence of people passing through the cave nearby the operator, but also the influence of the operator himself, are discussed, and the use of special precautions (including a CO2-absorbing mask) in defined critical situations is stressed. [less ▲]

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See detailQuantités de matières transportées en suspension et en solution par l'effluent majeur des karsts belges: la Meuse
Close-Lecocq, Jean-François; Ek, Camille ULg

in Annales de la Société Géologique de Belgique (1985)

In the Meuse River at Liège, for a drainage basin of 16 400 sq km,the average annual suspended load is 388 000 tons and the load in dissolution 1 092 000 tons.

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See detailL'Evolution saisonière de la teneur en CO2 de l'air de deux grottes belges : Ste-Anne et Brialmont, Tilff
Gewelt, Michel; Ek, Camille ULg

in Paterson, K.; Sweeting, M.M. (Eds.) New directions in Karst (1983, September)

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See detailEsquisse d'une chronologie des phénomènes karstiques de Belgique
Ek, Camille ULg; Poty, Edouard ULg

in Revue Belge de Géographie (1982), 106(1), 73-85

Limestone formations in Belgium have always been subject to dissolution. In Devonian limestones, the oldest Belgian ones, the first karst phenomena occurred in Devonian times. Fossil caves dicovered in ... [more ▼]

Limestone formations in Belgium have always been subject to dissolution. In Devonian limestones, the oldest Belgian ones, the first karst phenomena occurred in Devonian times. Fossil caves dicovered in Devonian limestones display a Carboniferous marine fill. During Mesozoic, Dinosaurs were trapped in collapse dolines. Grints and karst depressions occurred in Tertiary times, whereas subhorizontal caves were dug out during Quaternary. To-day, in some places, swallowholes and dolines are evolving fast. [less ▲]

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See detailLa morphologie de la Lune. Comparaison avec la Terre et avec Mars
Ek, Camille ULg

in G.E.O. (1978), 4(2), 15-27

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See detailLes phénomènes karstiques
Ek, Camille ULg

in Pissart, Albert (Ed.) Géomorphologie de la Belgique, hommage au professeur P. Macar (1976)

Les phénomènes karstiques de la Belgique sont localisés dans les calcaires dévoniens, le calcaire carbonifère, le poudingue permien de Malmedy, les dépôts triasiques et jurassiques de Lorraine belge et la ... [more ▼]

Les phénomènes karstiques de la Belgique sont localisés dans les calcaires dévoniens, le calcaire carbonifère, le poudingue permien de Malmedy, les dépôts triasiques et jurassiques de Lorraine belge et la craie du Crétacé de la Meuse et du pays de Herve. La genèse et la chronologie des différents phénomènes sont passées en revue. [less ▲]

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See detailLes dernières transgressions marines
Ek, Camille ULg; Ozer, André ULg

in Pissart, Albert (Ed.) Géomorphologie de la Belgique, hommage au Professeur P. Macar (1976)

Toute l'ère secondaire est marquée d'une alternance de phases continentales et d'importantes invasions marines, progressant dans des directions très variables. Le Tertiaire va connaître aussi une ... [more ▼]

Toute l'ère secondaire est marquée d'une alternance de phases continentales et d'importantes invasions marines, progressant dans des directions très variables. Le Tertiaire va connaître aussi une alternance de transgressions et de régressions; mais, à la différence de ce qui s'était passé au Secondaire, les invasions marines viendront toutes du secteur nord de notre pays: c'est la préfiguration de l'actuelle Mer du Nord. C'est donc un trait fondamental du relief de la Belgique qui s'instaure au Tertiaire. Au Quaternaire, les avancées marines ont été beaucoup plus restreintes et limitées à la plaine du nord du pays. [less ▲]

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See detailNouvelles recherches à la grotte de Remouchamps: le cadre géologique et géomorphologique
Ek, Camille ULg

in Bulletin de la Société Royale Belge d'Anthropologie et de Préhistoire (1974), 85

Remouchamps Cave is located in Frasnian limestones. These limestones are pure, sometimes dolomitic, and in thick beds. The cave displays two levels. The lower one (underground river) is at the level of ... [more ▼]

Remouchamps Cave is located in Frasnian limestones. These limestones are pure, sometimes dolomitic, and in thick beds. The cave displays two levels. The lower one (underground river) is at the level of the main outside river. The upper one, 10 m. higher, is dry. It is also an ancient river bed, but it includes large halls. These halls display huge collapses. [less ▲]

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See detailEtude sédimentologique dans la grotte de Remouchamps
Ek, Camille ULg

in Anthropologica et Praehistorica : Bulletin de la Société Royale Belge d'Anthropologie et de Préhistoire (1974), 85

Sedimentological study: Grain size analyses, morphoscopy, morphometry, heavy minerals. Sediments include: fluvial deposits, aeolian deposits, gelifracts. Some very flat pebbles got through a deep sump. A ... [more ▼]

Sedimentological study: Grain size analyses, morphoscopy, morphometry, heavy minerals. Sediments include: fluvial deposits, aeolian deposits, gelifracts. Some very flat pebbles got through a deep sump. A stalagmitic floor covered the fluvial sediments. Aeolian deposits, reworked by rainwash, are restricted to the entrance zone. Gelifraction occured in the same zone. [less ▲]

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See detailLes phénomènes karstiques du bassin du rio Aragón Subordán (Pyrénées). Leur étagement altitudinal.
Ek, Camille ULg

in Bulletin de la Société Géographique de Liège (1973), 9

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See detailLa dissolution du carbonate de calcium. Essai de mise au point.
Ek, Camille ULg

in Bulletin de la Société Géographique de Liège (1973), 9

Dissolution equilibria. Dissolution kinetics.

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See detailDissolution expérimentale de calcaires dans une solution de gaz carbonique. Note préliminaire.
Ek, Camille ULg

in Transactions of the Cave Research Group of Great Britain (1972)

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See detailLevé géologique des environs de Qal'at El-Mudiq. Note préliminaire.
Ek, Camille ULg

in Fouilles d'Apamée de Syrie, Miscellanea, 7 : Actes du Colloque (1972)

Presentation of the geological map of Qal'at el-Mudiq, in the Ghab graben, Syria.The bedrock is Cretaceous to Miocene. The cover formations are partly autochtonous (weathering and pedogenesis) and partly ... [more ▼]

Presentation of the geological map of Qal'at el-Mudiq, in the Ghab graben, Syria.The bedrock is Cretaceous to Miocene. The cover formations are partly autochtonous (weathering and pedogenesis) and partly allochtonous (fluvial, aeolian and slope deposits). [less ▲]

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See detailLa grotte de Remouchamps
Ek, Camille ULg; Dewez, Michel; Denoël, René et al

Book published by Lesire (1972)

The first inhabitants of the cave. Explorations history. Geology. Cave genesis. Speleothems genesis. The cave climate. Fauna. The swallowhole Dale.

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See detailLa grotte de Remouchamps: compte rendu de l'excursion de la Société Géographiqe de Liège le 28 mai 1969
Ek, Camille ULg

in Bulletin de la Société Géographique de Liège (1970), 6

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See detailLes influences structurales sur la morphologie de la grotte de Remouchamps (Belgique)
Ek, Camille ULg

in Annales de la Société Géologique de Belgique (1970), 93(2), 293-304

The geological structure has had a determining effect on the genesis and morphology of Remouchamps cavern (dip of the beds, joints, faults).

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See detailCarte géologique de la grotte de Remouchamps (Belgique) Notice explicative
Ek, Camille ULg

in Annales de la Société Géologique de Belgique (1970), 93(2), 287-292

The geological map of the cavern of Remouchamps was surveyed at a scale of I : 500. The main structural features are two anticlines, with faulted hinges, separated by a syncline. The observed faults are ... [more ▼]

The geological map of the cavern of Remouchamps was surveyed at a scale of I : 500. The main structural features are two anticlines, with faulted hinges, separated by a syncline. The observed faults are reversed, except for the most northerly - the Faille Cathédrale Nord - which is normal. The strike of the principal faults is about N.- 70-80°E. No faults with this strike have been recognized on the surface at Remouchamps. [less ▲]

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See detailL'effet de la loi de Henry sur la dissolution du CO2 dans les eaux naturelles
Ek, Camille ULg

in Problems of the Karst Denudation (1969)

The solution coefficient of CO2 in water increases three times when temperature decreases from 35 to 0°C. It was deduced from this, by some researchers, that cold waters are richer in CO2 than warm waters ... [more ▼]

The solution coefficient of CO2 in water increases three times when temperature decreases from 35 to 0°C. It was deduced from this, by some researchers, that cold waters are richer in CO2 than warm waters, and thus more aggressive towards limestone. Indeed, CO2 content of water is, according to Henry's law, the product of the solution coefficient by the partial pressure of CO2 in air. This partial pressure varies much more than solution coefficient, and often in the opposite direction. [less ▲]

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See detailAbondance du gaz carbonique dans des fissures de grottes.
Ek, Camille ULg

in 5. Internationaler Kongress für Speläologie (1969)

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