References of "Geologica Belgica"
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See detailPalynomorph distribution and bathymetry in the Chanxhe section (eastern Belgium), reference for the neritic late to latest Famennian transition (Late Devonian).
Maziane-Serraj, N; Hartkopf-Fröder, C; Streel, Maurice ULg et al

in Geologica Belgica (2007), 10(3-4), 170-175

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See detailFrasnian
Coen-Aubert, M.; Boulvain, Frédéric ULg

in Geologica Belgica (2006), 9(1-2), 19-25

The name Frasnian, which comes from the locality of Frasnes near Couvin in Belgium, was introduced by Gosselet in 1879 and was formally retained for the lower stage of the Upper Devonian by the ... [more ▼]

The name Frasnian, which comes from the locality of Frasnes near Couvin in Belgium, was introduced by Gosselet in 1879 and was formally retained for the lower stage of the Upper Devonian by the Subcommission on Devonian Stratigraphy in 1981. The modern definition of the Frasnian is based on conodonts and the historical background of the stage is developed in detail herein. Data about the lithostratigraphy, sedimentology, biostratigraphy, chronostratigraphy and absolute age of the Frasnian can also been found in this contribution. [less ▲]

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See detailDisused Jurassic regional stage from Belgium: Virtonian
Delsate, D.; Boulvain, Frédéric ULg

in Geologica Belgica (2006), 9(1-2), 199-200

An overview of the definition and history of the Virtonian is given with the argumentation for the abandonment of this disused regional stage.

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See detailDisused Palaeozoic regional stages from Belgium: Devillian, Revinian, Salmian, Gedinnian and Burnotian.
Dejonghe, L.; Herbosch, A.; Steemans, Philippe ULg et al

in Geologica Belgica (2006), 9(1-2), 191-197

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See detailStrunian
Streel, Maurice ULg; Brice, D; Mistiaen, B

in Geologica Belgica (2006), 9(1/2), 105-109

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See detailFamennian
Thorez, J; Dreesen, R; Streel, Maurice ULg

in Geologica Belgica (2006), 9(1/2), 27-45

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See detailAltered rhyolitic rocks in the Visé boreholes: a geochemical approach
Duchesne, Jean-Clair ULg; Goemaere, Eric; Grigolato, Jean-Christophe et al

in Geologica Belgica (2005), 8(3), 71-83

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See detailFrasnian carbonate buildups of southern Belgium: the Arche and Lion members interpreted as atolls
Boulvain, Frédéric ULg; Demany, B.; Coen-Aubert, M.

in Geologica Belgica (2005), 8(1-2), 69-91

The facies architecture, sedimentary dynamics and paleogeographic evolution were reconstructed for a number of Frasnian buildups developed on a carbonate platform on the south side of the Dinant ... [more ▼]

The facies architecture, sedimentary dynamics and paleogeographic evolution were reconstructed for a number of Frasnian buildups developed on a carbonate platform on the south side of the Dinant Synclinorium (Belgium). Bed-by-bed sampling and detailed petrography were complemented by magnetic susceptibility analysis, allowing for high-precision lateral correlation. Six facies were recognised in the buildups, each characterized by a specific range of textures and assemblage of organisms: grey, pinkish or greenish limestone, with stromatactis, corals and stromatoporoids (facies A3-L3); grey limestone with corals, peloids and dasycladales (facies A4-L4); grey, microbial limestone (facies A5-L5); grey limestone with dendroid stromatoporoids (facies A6-L6); grey, laminar fenestral limestone, (facies A7-L7); grey, bioturbated limestone (facies A8-L8). The time-equivalent off -buildup sediments include a large amount of transported material that originally came from the buildups. Sedimentological evidence suggests that facies A3-L3 developed between the storm wavebase and the fairweather wavebase, in a oligophotic environment. This facies contains lenses of facies A5-L5, with stromatolitic coatings and Renalcis-rich thrombolitic bushes. These lenses were developed in greatest abundance closest to the fairweather wavebase, and they became anastomosing. Facies A6-L6 was developed in an environment with slightly restricted water circulation; there is a steady transition between this facies and the fenestral limestone A7-L7, which were deposited in a moderately protected subtidal to intertidal area. Facies A8-L8 developed at subtidal depths in a quiet, lagoonal environment. The buildups started with the development of facies A3-L3, with microbial lenses and algal facies becoming progressively more abundant upwards. Above about 20m in each buildup, more protected facies are found in the buildup’s central part. This atoll-like geometry suggests the development of restricted sedimentation in this central area, sheltered by bindstone or floatstone facies. The initial development of the lower part of a buildup during a transgression and subsequent highstand would have been followed by reefal growth along the edge of the buildup during the succeeding lowstand; an atoll crown would then have started to develop during the following transgressive stage. The presence of restricted facies can be seen as the consequence of the balance between sea level rise and reef growth. [less ▲]

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See detailZeolites, prehnite, and pumpellyite from Bertrix, Belgium.
Hatert, Frédéric ULg; Theye, Thomas

in Geologica Belgica (2005), 8(1-2), 33-42

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See detailA Psammosteid Heterostracan (Vertebrata: Pteraspidomorphi) from the Emsian (Lower Devonian) of the Grand Duchy of Luxembourg
Delsate, D.; Blieck, A.; Steemans, Philippe ULg

in Geologica Belgica (2004), 7(1-2), 21-26

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See detailJean-Marie Graulich, biographie
Delmer, Andre; Da Silva, Anne-Christine ULg

in Geologica Belgica (2003), 6(3/4), 73-80

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See detailTriassic and Jurassic lithostratigraphic units (Belgian Lorraine)
Boulvain, Frédéric ULg; Belanger, I.; Delsate, D. et al

in Geologica Belgica (2001), 4(1-2), 113-119

A multidisciplinary study of some extensively cored boreholes together with the new 1/25,000 geological mapping of Wallonia led us to propose a new lithostratigraphic canvas for Belgian Lorraine. This ... [more ▼]

A multidisciplinary study of some extensively cored boreholes together with the new 1/25,000 geological mapping of Wallonia led us to propose a new lithostratigraphic canvas for Belgian Lorraine. This area is located on the NE border of the Paris Basin, south of the Ardennes; the studied stratigraphic interval covers the Keuper to the Bajocian. [less ▲]

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See detailSedimentology of the Bieumont Member : influence of the Lion Member Carbonate mounds (Frasnian, Belgium) on their sedimentary environment
Humblet, M.; Boulvain, Frédéric ULg

in Geologica Belgica (2001), 3(1-2), 97-118

This is a sedimentological study of Middle Frasnian Bieumont Member fore-reef and off-reef carbonate sediments exposed in the Chimay-Couvin region (Belgium). It is based on four stratigraphic sections ... [more ▼]

This is a sedimentological study of Middle Frasnian Bieumont Member fore-reef and off-reef carbonate sediments exposed in the Chimay-Couvin region (Belgium). It is based on four stratigraphic sections: the Lompret quarry, the Frasnes railway section, the Leus quarry and southern parts of the Lion quarry. The Lompret section is here described for the first time and represents the main focus of this work. The Bieumont Member consists of a bedded sequence of argillaceous and bioclastic limestone. At Lompret, the Member is exposed with a thickness of 48 m (the basal contact is not exposed). The Member consists of 6 lithological units (in stratigraphic order) : 1. argillaceous limestone with episodic intercalations of reef debris (distal reef talus), 2. an alternation of marl and argillaceous limestone (basinal background sediment), 3. thickly-bedded bioclastic limestone (channel deposits), 4. a sequence of argillaceous limestone (inter-channel deposits), 5. bioclastic limestone with sporadic occurrence of framestone (proximal fore-reef deposits) and 6. fine-grained, bioclastic limestone interbedded with prominent layers of reef debris (distal fore-reef deposits). Within unit 5, an isolated reef block transported down the paleoslope is present. Microfacies analysis revealed 16 microfacies units which together with the lithological subdivisions were used to reconstruct the dynamic sedimentary history of the Bieumont Member at Lompret. There are two orders of depositional rhythmicity. The reef growth cycle starts with the first significant influx of reef-related facies at the beginning of unit 3 and from thereon is well differentiated from the Bieumont Member stratotype which largely consists of lithologies equivalent to units 1 and 2. Progradation was directed to the South and related shallowing-upward conditions culminated during the deposition of unit 5. On a lower scale, rhythmic bedding within units 2 and 4 could be related to orbitally forced cycling. The vertical and lateral variations of facies within the Bieumont Member were used to reconstruct a depositional model for the Lompret area. In addition, the documentation of facies variation on a regional scale was enhanced by using data from the Focant borehole and geological surveys of Han-sur-Lesse and Barvaux regions. [less ▲]

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See detailNew lithostratigraphical, sedimentological, mineralogical and palaeontological data on the Mesozoic of Belgian Lorraine: a progress report
Boulvain, Frédéric ULg; Belanger, I.; Delsate, D. et al

in Geologica Belgica (2001), 3(1-2), 3-33

A multidisciplinary study of some extensively cored boreholes together with the new 1/25.000 geological mapping of wallonia lead us to propose a new lithostratigraphic canvas for belgian lorraine. This ... [more ▼]

A multidisciplinary study of some extensively cored boreholes together with the new 1/25.000 geological mapping of wallonia lead us to propose a new lithostratigraphic canvas for belgian lorraine. This area is located on the n-e border of the paris basin, south of the ardennes; the studied stratigraphic interval covers the keuper to the toarcian. Each of the newly defined units is sedimentologicaly interpreted on the basis of macroscopic and microscopic observations. Detailed palynological and claystratigraphical analyses have been performed, providingadditional stratigraphical, palaeoecological and sedimentological data. Moreover, a first sequence stratigraphic interpretation is proposed for this highly transgressive sedimentary body. The habay formation (conglomerates and red mudstones) is a fluvial unit, with immature channel conglomerates and paleosoils; the attert formation (dolomitic marls with gypsum and pseudomorphs) exhibites an evaporitic trend. The Mortinsart formation (sands and marls) corresponds to a restricted marine unit, evolving towards an alluvial plain (levallois member). The second cycle begins with the Jamoigne Formation (bioturbated marls and limestones), a marine subtidal restricted unit, evolving towards a more sandy sedimentary body (Metzert Member). The base of the third cycle corresponds to the rest of the Luxemburg Formation, comprising a succession of sandy waves. The Ethe Formation (laminar mudstones and marls) marks a deepening of the basin and the outset of open marine dysaerobic conditions. The Aubange Formation (bioturbated marls with sandstones and limestones) is characterized by the reappearance of a normal benthic fauna. The Grandcourt Formation (laminar mudstones and marls) marks a return to open marine dysaerobic conditions. The Mont-Saint-Martin Formation (marls, sandy marls and oolitic ironstone) is a highly regressive unit, while the Longwy Formation (limestones) marks the initiation of a carbonate platform. [less ▲]

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See detailPalaeogeographic and palaeoenvironmental characteristics of major marine incursions in northwestern Europe during the Westphalian C (Bolsovian).
Dusar, M; Paproth, E; Streel, Maurice ULg et al

in Geologica Belgica (2001), (2000)3(3-4), 331-347

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See detailPalynology and sedimentology of laminites and tillites from the latest Famennian of the Parnaíba Basin, Brazil.
Streel, Maurice ULg; Caputo, M.V.; Loboziak, S et al

in Geologica Belgica (2001), 3(1-2), 87-96

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