References of "Marion, Jean-Marc"
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See detailDes traces de lithalses sur des replats de la retombée nord de la crête de la Vecquée
Marion, Jean-Marc ULg; Lamberty, Pauline ULg; Ghiette, Pascal et al

in Hautes Fagnes (2017), 83(305 (1° trimestre 2017)), 9-13

Pissart (2009, 2014) produced a map showing the distribution of "fish tanks", traces of lithalses, in Eastern Belgium (Hautes Fagnes) and he insisted on a close relationships with the systematic presence ... [more ▼]

Pissart (2009, 2014) produced a map showing the distribution of "fish tanks", traces of lithalses, in Eastern Belgium (Hautes Fagnes) and he insisted on a close relationships with the systematic presence in the subsoil of the Upper Cambrian rocks (former Revinian), namely: quartzites, quartzophyllades and phyllades. He made of this lithological aspect a fundamental factor, as well as the periglacial climatic conditions, to justify the formation of lithalses in Eastern Belgium. He points out one exception in the Elsenborn military camp, where the Lower Devonian sandstones and silty shales are exposed. The researchs that led to the realization of this map were carried out on the aerial photos made available to researchers and the public, from the 1950s, by the Military Geographical Institute (IGM). In 2015, the Walloon Public Service, through its "WalOnMap" site, has launched digital terrain models generated by LIDAR (Laser Detection and Ranging) images, including the "2013-2014 (Hillshade)" model, which only gives the relief of the ground, irrespective of the vegetation cover, and offers, by this advantage, a potential for prospecting. This one is clearly superior to that of the above-mentioned aerial photos. [less ▲]

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See detailVisé - St Martens Voeren. Carte géologique de la Wallonie à l'échelle du 1/25.000. 34/7-8
Barchy, Laurent; Marion, Jean-Marc ULg

Cartographic material (2017)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous edition in 1896 (at 1/40.000, by Forir).

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See detailVisé - Sint-Martens Voeren n°34/7-8.Carte géologique de Wallonie à l'échelle du 1/25.000. Notice explicative.
Barchy, Laurent; Marion, Jean-Marc ULg

Book published by SPW/Editions, Cartes - Révision et 2ème édition (2017)

Leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions in 1896 (at 1/40.000, by ... [more ▼]

Leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions in 1896 (at 1/40.000, by Forir). [less ▲]

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See detailNew data on the incertae sedis biota and foraminifera of the mid-Famennian Baelen Member (Late Devonian, eastern Belgium)
Vachard, Daniel; Dreesen, Roland; Mottequin, Bernard et al

in Paleobiodiversity and Paleoenvironments (2016), 21

The Baelen mud mounds in eastern Belgium represent a local member of the mid-Famennian Souverain-Pré Formation (an important carbonate interval within the Condroz Sandstone Group). The lower part of this ... [more ▼]

The Baelen mud mounds in eastern Belgium represent a local member of the mid-Famennian Souverain-Pré Formation (an important carbonate interval within the Condroz Sandstone Group). The lower part of this member contains silty bioclastic wackestones and packstones that are particularly rich in the problematical algae Serrisinella and Dreesenullella. Plurilocular foraminifera (Septabrunsiina and Baelenia) and rare solitary rugose corals (Neaxon? sp.) occur within crinoidal grainstones (tempestites) interfingering with the latter bioclastic wacke-/packstones and red-stained stromatactoid spiculitic mudstones (carbonate mound core facies). Although Serrisinella is quite common in other mid- and late Famennian limestones, of Belgium, Dreesenulella is almost endemic of the Baelen Member. Both genera apparently inhabited the muddy sediment-water interface, constituting meadows probably in zones of intermittently strong bottom currents. The taxonomic similarities between Dreesenulella and Saccamminopsis are discussed, as well as their possible affinities with the Xenophophyrea and Kokomiacea. Moreover, the first stages of the Septabrunsiina–Baelenia foraminiferal lineage are analysed in detail. The taxonomic and palaoecological positioning of Serrissinella and Dreesenulella adds to the discussion about the palaeobathymetry of the Baelen mud mounds and corroborates sedimentological evidence for their relatively shallow carbonate ramp depositional setting. [less ▲]

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See detailAperçu géologique du bassin du Hoyoux
Marion, Jean-Marc ULg; Goemaere, Eric; Mottequin, Bernard

in Michel, Georges; Thys, Georges (Eds.) Atlas du karst wallon. Bassins versants du Hoyoux et de la Solières (2016)

The Hoyoux hydrographic basin comprises two regions characterized by karstic phenomena and a rich hydrologic potential. On the one hand, the Condroz, where the Dinantian limestones are in synclinal ... [more ▼]

The Hoyoux hydrographic basin comprises two regions characterized by karstic phenomena and a rich hydrologic potential. On the one hand, the Condroz, where the Dinantian limestones are in synclinal position in the bottom of depressions, separated from one another by anticlinal crests which are occupied by the Upper Famennian sandstones. On the other hand, the narrow strip of Devonian limestones (of Givetian and Frasnian ages), positioned immediately at the NW of the previous region, separates the Condroz, which is constituted by an alternation of deposits of Famennian and Dinantian (sandstones and limestones) and, the Ardennes Condroz, which consists of lower devonian and eifelian deposits (conglomerates, quartzites, sandstones and schists). Since 2015, the Walloon Public Service's site "WalOnMap", using the ultra-precise digital terrain model "MNT 2013-2014 Hillshade" obtained after a LIDAR scan of the soil surface, offers a remarkable mapping tool essential to geological mapping, in general, and to the cartography and prospection of Karstic phenomena in particular. [less ▲]

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See detailLes ressources du sous-sol du bassin du Hoyoux jusqu’aux portes de la ville d’Andenne. Un riche passé industriel qui se conjugue au présent
Goemaere, Eric; Marion, Jean-Marc ULg; Mottequin, Bernard

in Michel, Georges; Thys, Georges (Eds.) Atlas du karst wallon. Bassins versants du Hoyoux et de la Solières (2016)

The outcrops made by the incision of the Hoyoux and its tributaries have largely favored the opening of numerous quarries and some mines, in parallel with the installation of various transforming ... [more ▼]

The outcrops made by the incision of the Hoyoux and its tributaries have largely favored the opening of numerous quarries and some mines, in parallel with the installation of various transforming industries. The list of materials exploited is impressive: limestones, dolomites, sandstones and quartzites, conglomerates, clays, sands, iron ores, etc. Their exploitation required an abundant labor force. The quarries were predominantly located in the bottom of the valley, which allowed the establishment of vast and high operating fronts and the extraction of healthy stones, in particular ornamental stones which were declined in different chromatic varieties. Walking today through this popular wooded and bucolic valley, one hardly imagines the industrious activity where resonated the noise of the tools and the labor of the workers. [less ▲]

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See detailPlicathyridine brachiopods (Athyridida) from the Frasnian (Late Devonian) of Western Europe and Middle East
Mottequin, Bernard; Brice, Denise; Marion, Jean-Marc ULg et al

in Geobios (2016), 49

Plicathyridine brachiopods (Athyridida) from the early–middle Frasnian of southern Belgium and northern France (Dinant Synclinorium) are systematically described for the first time. They include two ... [more ▼]

Plicathyridine brachiopods (Athyridida) from the early–middle Frasnian of southern Belgium and northern France (Dinant Synclinorium) are systematically described for the first time. They include two species: Anathyris (Anathyris) calestiennensis nov. sp., and A. (A.) sp. indet. 1. They are uncommon in the mainly shally La Prée (Nismes Formation) and Ermitage (Moulin Liénaux Formation) members and are absent from the mixed argillaceous–carbonate late Frasnian succession in this area, contrary to what is observed in Russia, notably in the East-European Platform and Siberia. In the Middle East, two species of Anathyris are recognized on the basis of a limited material from the Dascht-e-Nawar area in Afghanistan (A. (A.) sp. indet. 2) and the Kuh-e Kaftar mountains in Central Iran (A. (A.) sp. indet. 3). Anathyris (A.) calestiennensis nov. sp. is sometimes encrusted by epizoans (tabulate and rugose corals, and bryozoans) and rarely displays single, small circular drill holes. The past and current epizoan–brachiopod interactions are also discussed (Anathyris vs. Lingula, respectively). [less ▲]

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See detailIntroduction: 2. La géologie du promontoire du Rocher du Vieux-Château
Marion, Jean-Marc ULg; Poty, Edouard ULg

in Delye, Emmanuel (Ed.) Les fortifications celtiques et carolingiennes du Rocher du Vieux-Château à Pont-de-Bonne (Modave, Belgique) (2016)

The archaeological circle Hesbaye Condroz (ACHC) undertook in 2004 a program of excavation of the fortifications of the "Rocher du Vieux-Château" in Pont-de-Bonne (Modave, Belgium), following a project ... [more ▼]

The archaeological circle Hesbaye Condroz (ACHC) undertook in 2004 a program of excavation of the fortifications of the "Rocher du Vieux-Château" in Pont-de-Bonne (Modave, Belgium), following a project started in 2001. The development of the site has been focused on 3 points: the restoration of a calcareous grassland with sheep grazing to limit thorny, the cutting of the edges of the site and of some nice lansdscape perspectives to include the creation of a tourist trail and finally, an archaeological component that identifies at best the successive occupations at the top of the spur. [less ▲]

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See detailEdouard Poty: a bio- and bibliography
Denayer, Julien ULg; Aretz, Markus ULg; Barchy, Laurent et al

in Geologica Belgica (2016), 19(1-2), 3-6

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See detailHet Rode marmer van Baelen, een geologisch buitenbeentje
Dreesen, Roland; Marion, Jean-Marc ULg; Mottequin, Bernard

in Grondboor and Hamer (2015), 48(4), 2-13

Het Rode Marmer van Baelen is een crinoïdenrijke kalksteen uit het jongste Devoon (Boven-Famenniaan) van België, die dagzoomt niet al te ver onder de grens van Nederlands Zuid-Limburg. Deze bouwsteen is ... [more ▼]

Het Rode Marmer van Baelen is een crinoïdenrijke kalksteen uit het jongste Devoon (Boven-Famenniaan) van België, die dagzoomt niet al te ver onder de grens van Nederlands Zuid-Limburg. Deze bouwsteen is geologisch uniek omdat het gesteente waaruit hij werd gewonnen allicht wereldwijd het best gedocumenteerde (en misschien het enige) voorbeeld is van een z.g. bioherm of kalkslibheuvel (“mud mound”) tijdens het Famenniaan. Het calciumcarbonaat in dergelijke kalkslibheuvels is grotendeels van microbiële oorsprong, evenals het ijzerrijke pigment (hematiet) dat de vaak opvallende roze en rode kleuren veroorzaakt. [less ▲]

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See detailThe Red Marble of Baelen, an exceptional mid-Famennian mud mound complex in a carbonate ramp setting from Eastern Belgium
Dreesen, Roland; Vachard, Daniel; Marion, Jean-Marc ULg et al

Poster (2015, September 14)

The Red Marble of Baelen from the Limbourg area (Vesdre Basin, Eastern Belgium) represents a member of the middle Famennian (late Upper Devonian) Souverain-Pré Formation (Late marginifera conodont Zone ... [more ▼]

The Red Marble of Baelen from the Limbourg area (Vesdre Basin, Eastern Belgium) represents a member of the middle Famennian (late Upper Devonian) Souverain-Pré Formation (Late marginifera conodont Zone). It corresponds to a short-term transgressive event and eustatic rise during the Famennian, interrupting the regressive megasequence on the Condroz shelf in Belgium. It is the only known or at least the only well-documented mid-Famennian carbonate mud mound complex worldwide, after the end-Frasnian mass extinction that wiped out numerous invertebrate taxa. [less ▲]

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See detailFlora and fauna from a new Famennian (Upper Devonian) locality at Becco, eastern Belgium
Olive, Sébastien; Clément, Gaël; Denayer, Julien ULg et al

in Geologica Belgica (2015), 18(2-4), 92-101

The Becco locality (Liège province), belongs to the Theux tectonic window and represents a proximal, probably fluvial, environment corresponding to a channel infill. We present here a preliminary report ... [more ▼]

The Becco locality (Liège province), belongs to the Theux tectonic window and represents a proximal, probably fluvial, environment corresponding to a channel infill. We present here a preliminary report of the fossil assemblage discovered at the locality. The Becco site has yielded a diverse flora of early seed plants including Moresnetia zalesskyi, Dorinnotheca streeli and Condrusia sp. This assemblage, characteristic of the Belgian Famennian, highlights the diversity of early spermatophytes in the country. Becco has also delivered a rich vertebrate fauna with antiarch, groenlandaspid and phyllolepid placoderms, diplacanthiform acanthodians, as well as actinopterygians and various sarcopterygians. The fossiliferous assemblage of Becco resembles those of several Devonian tetrapod- bearing localities, including that of Strud in Belgium, and could therefore provide a favorable palaeoecological setting in the search for early tetrapods. [less ▲]

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See detailCarte géologique de Wallonie (Belgique), échelle 1/25.000 n° 49/1-2 Tavier-Esneux
Bellière, Jacques; Marion, Jean-Marc ULg

Cartographic material (2015)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous edition in 1898 (at the scale of 1/40.000, by ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous edition in 1898 (at the scale of 1/40.000, by Lohest) [less ▲]

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See detailTavier-Esneux 49/1-2. Carte géologique de Wallonie, échelle 1/25.000. Notice explicative
Bellière, Jacques; Marion, Jean-Marc ULg

Book published by SPW Editions, cartes - Révision (2de édition revue et corrigée) (2015)

Leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using scientific data produced since the previous edition in 1898 (at the scale of 1/40.000 ... [more ▼]

Leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using scientific data produced since the previous edition in 1898 (at the scale of 1/40.000, by Lohest). [less ▲]

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See detailGeological context of the Mesolithic Heid de Fer and Ourlaine sites at Becco (Liège province, Belgium)
Mottequin, Bernard; Marion, Jean-Marc ULg

in Anthropologica et Praehistorica : Bulletin de la Société Royale Belge d'Anthropologie et de Préhistoire (2015), 125/2014 (2015)

In the surroundings of the hamlet of Becco (Theux, province of Liège , Belgium), the sites of "La Heid de Fer" and 'L'Ourlaine" are known to have supplied lithic materials assigned to the Early Mesolithic ... [more ▼]

In the surroundings of the hamlet of Becco (Theux, province of Liège , Belgium), the sites of "La Heid de Fer" and 'L'Ourlaine" are known to have supplied lithic materials assigned to the Early Mesolithic (pre-Boreal). Located a the top a small cliff formed by sandstones and siltstones belonging to the Esneux Formation (Devonian, Famennian), "La Heid de Fer" station overlooks a steep slope developed in the shales and siltstones belonging to Lambermont and Hodimont Formations (Upper Devonian, Famennian), within which occurs an oolitic hematite level reaching several decimeters thick (0.5 m maximum). As suggested by the particular topography of these two sites, further investigations should be conducted in this area in search of other traces of the microlithic industry. [less ▲]

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See detailEnseignements de la recherche de viviers sur les images Lidar. Documents de la station scientifique des Hautes-Fagnes
Juvigné, Etienne ULg; Marion, Jean-Marc ULg; Lamberty, Pauline ULg et al

in Hautes Fagnes (2015), (3), 23-27

Pissart (2010) published a synthetic map locating high "viviers" (fishponds) areas in the Ardennes (Belgium), some of which were identified in the 1950s' on aerial photographs taken by aircraft flying at ... [more ▼]

Pissart (2010) published a synthetic map locating high "viviers" (fishponds) areas in the Ardennes (Belgium), some of which were identified in the 1950s' on aerial photographs taken by aircraft flying at low altitude; others have been found on Google Earth in the 2000s'. However, be aware that one and the other source is usable for this purpose only in open landscapes. In 2015, the Public Service of Wallonia, via his site "WalOnMap" launches the Lidar mapping. Among other possibilities, this tool allows only restore the relief of the ground (digital field model), regardless of the plant cover (MNT 2013-2014 "Hillshade") . So the question is to estimate what can be the contribution of this new tool in the identification of traces of lithalsas. [less ▲]

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See detailThe Famennian succession: marine, continental and reefal facies in the Dinant Synclinorium and the Vesdre area
Denayer, Julien ULg; Mottequin, Bernard; Dreesen, Roland et al

in STRATA (2015), 17

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See detailThe Middle Devonian succession in the Dinant Synclinorium
Denayer, Julien ULg; Mottequin, Bernard; Marion, Jean-Marc ULg et al

in STRATA (2015), 17

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See detailLes formations cambro-ordoviciennes du Massif de Stavelot et le conglomérat permien (Poudingue de Malmedy), sur les cartes Harzé- La Gleize et Stavelot - Malmedy.
Lamberty, Pauline ULg; Marion, Jean-Marc ULg

Diverse speeche and writing (2014)

Livret-guide de l'excursion réalisée dans le cadre du Programme* de Révision de la carte géologique de la Wallonie (*commandé par le SPW). La journée est dédiée aux formations cambriennes (Wanne, La Venne ... [more ▼]

Livret-guide de l'excursion réalisée dans le cadre du Programme* de Révision de la carte géologique de la Wallonie (*commandé par le SPW). La journée est dédiée aux formations cambriennes (Wanne, La Venne et La Gleize), ordoviciennes (Jalhay et Ottré), ainsi qu'aux dépôts conglomératiques permiens, connus sous le nom de "Poudingue de Malmedy" qui affleurent dans le Massif de Stavelot (localités de Trois-Ponts, Stavelot, Basse-Bodeux, Stoumont, ainsi que la vallée de la Lienne). [less ▲]

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