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See detailSubdivision of the Famennian Stage into four substages and correlation with the neritic and continental Miospore Zonation
Streel, Maurice ULg

in Newsletter. Subcommission on Devonian Stratigraphy (2004), 21

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See detailHolocene record of atmospheric flux by geochemical and Pb isostopes signatures in a Belgian Hautes Fagnes peat bog: Preliminary results
Gerard; De Vleeschouwer, F.; Mattielli, N. et al

in Geochimica et Cosmochimica Acta (2004), 68(11), 485-485

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See detailHolocene record of atmospheric flux by geochemical and Pb isostopes signatures in a Belgian Hautes Fagnes peat bog: Preliminary results
Gerard; De Vleeschouwer, F.; Mattielli, N. et al

in Geochimica et Cosmochimica Acta (2004), 68(11), 485-485

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See detailFaunal/floral and isotopic responses to Milankovitch precession cycles and environmental changes in the upper Gulpen Formation (Upper Maastrichtian) at the CBR-Lixhe and ENCI-Maastricht bv quarries
Felder, P. J.; Keppens, E.; De Clercq, Bernadette ULg et al

in Netherlands Journal of Geosciences-Geologie en Mijnbouw (2003), 82(3), 275-281

Two sections, just below the Nivelle Horizon in the upper Gulpen Formation (Upper Maastrichtian), and seven kilometres apart (CBR-Lixhe and ENCI-Maastricht bv quarries) have been analysed (samples every 5 ... [more ▼]

Two sections, just below the Nivelle Horizon in the upper Gulpen Formation (Upper Maastrichtian), and seven kilometres apart (CBR-Lixhe and ENCI-Maastricht bv quarries) have been analysed (samples every 5 cm) for dinocyst, pollen grains and bioclast contents as well as for carbon and oxygen isotopic composition, to obtain better insight into the influence of weathering on these sediments. The CBR section lies above groundwater level, while that at the ENCI quarry is some metres below. At the former quarry we recognised the influences of weathering (karst) nearby. At ENCI, palynological, bioclast and stable isotope results of the carbonate phase (mainly consisting of coccoliths) co-vary remarkably, displaying two cycles which may be interpreted tentatively as climatic fluctuations. The partial derivative(18)O curve varies roughly between -1.6parts per thousand and -1.1parts per thousand (on PDB scale), corresponding to a temperature change of about 2degreesC. Less negative values (i.e. cooler seawater) coincide with larger amounts of pollen of Normapolles and Triporates type assumed to represent temperate forest elements of a vegetation also containing tropical elements such as palms. Assuming the 5 cm sample intervals at ENCI to correspond to 1 ka, climatic maxima (and minima) may be 20-25 ka apart, obviously recalling Milankovitch precession cycles. These are independent of a sharp sedimentological change noted in the upper part of the lowest cycle (samples 42 to 24). Upwards of sample 42, bioclast contents increase and dinocysts, Spiniferites in particular, decrease significantly, corresponding to a marked shallowing. This turning point is also recorded in the partial derivative(13)C curve at ENCI. Bioclast percentages appear to follow composite trends that are influenced by both climatic and sedimentological conditions. [less ▲]

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See detailBiostratigraphic correlation at the Late or/and Latest Famennian from Western, Central and Eastern European sections. State of the art.
Streel, Maurice ULg; Avkhimovitch, V.I.; Berkowski, B et al

in Newsletter. Subcommission on Devonian Stratigraphy (2003), 19

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See detailLeclercq Suzanne.
Streel, Maurice ULg; Fairon-Demaret, M

in Académie Royale des sciences lettres et beaux arts de Belgique/ Nouvelle biographie nationale (2003), 7

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See detailPalaeozoic palynology. A special Issue in honour of Dr. Stanisla Loboziak
Steemans, Philippe ULg; Servais, T.; Streel, Maurice ULg

in Review of Palaeobotany and Palynology (2002), 118(Special Issue), 1-421

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See detailBiometry and paleoenvironment of Retispora lepidophyta (Kedo) Playford 1976 and associated miospores in the latest Famennian nearshore marine facies, eastern Ardenne (Belgium)
Maziane, N.; Higgs, K. T.; Streel, Maurice ULg

in Review of Palaeobotany and Palynology (2002), 118(1-avr Sp. Iss. SI), 211-226

The size diameter of Retispora lepidophyta, a stratigraphically important miospore, is reexamined in greater detail than in previous studies using three sections of the latest Famennian nearshore marine ... [more ▼]

The size diameter of Retispora lepidophyta, a stratigraphically important miospore, is reexamined in greater detail than in previous studies using three sections of the latest Famennian nearshore marine facies of the eastern Ardenne. The evolutionary character of the size reduction with time is confirmed and is used for accurate correlations between the three sections. Cluster analyses (dendrograms) are performed on the percentages of a selection of miospore species from the two most complete sections and show a clear analogy in the lateral distribution of R. lepidophyta and Vallatisporites hystricosus, a species known elsewhere (West Virginia, USA) to belong to coastal 'downstream' near-swamp plant communities [Streel and Scheckler, Rev. Palaeobot. Palynol. 64 (1990) 315-324]. By comparison also with the West Virginia data, three Diducites species are believed to represent the 'coal' swamp vegetation. A decrease in the proportion of the Diducites species from the lower to the upper portion of the studied sections is observed. Using biometric analysis, high resolution correlation between these sections reveals a lateral shift of facies with time during the latest Famennian in the eastern Ardenne. Local synsedimentary block-faulting processes were probably responsible. (C) 2002 Elsevier Science B.V. All rights reserved. [less ▲]

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See detailMultidisciplinary study of the Wealden deposits in the Mons Basin (Belgium): a progress report.
Yans, J; Spagna, P; Foucher, JC et al

in Aardkungigen Mededelingen (2002), 12

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See detailLa recherche scientifique en Hautes-Fagnes
Streel, Maurice ULg

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (2002), XIII(1-6), 55-65

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See detailPaleozoïc Palynology: a special issue in honour of Dr. Stanislas Loboziak
Steemans, Philippe ULg; Servais, T.; Streel, Maurice ULg

Book published by Elsevier (2002)

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See detailArchaeopteris from the Upper Famennian of Belgium: Heterospory, Nomenclature, and Palaeobiogeography
Fairon-Demaret, Muriel ULg; Leponce, Isabelle ULg; Streel, Maurice ULg

in Review of Palaeobotany & Palynology (2001), 115(1-2), 79-97

New fertile specimens of Archaeopteris roemeriana from Upper (but not uppermost) Famennian strata of Belgium have been studied. Crowded sporangia are borne on non-laminate, three times bifurcate fertile ... [more ▼]

New fertile specimens of Archaeopteris roemeriana from Upper (but not uppermost) Famennian strata of Belgium have been studied. Crowded sporangia are borne on non-laminate, three times bifurcate fertile leaves helically arranged around the fertile ultimate axes. Vegetative leaves occur both proximal and distal to the fertile leaves. Heterospory is demonstrated with miospores belonging to the Geminospora-Aneurospora complex and macrospores most probably to Contagisporites genus. The established morphological traits allow us to substantiate a synonymy between A. roemeriana and A. halliana. The apparent dominance of A. halliana on the eastern side of the Acadian mountains during Late Famennian times is discussed. [less ▲]

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See detailThe Uppermost Famennian around the world (Definition, biostratigraphical and sedimentological context)
Streel, Maurice ULg

in Newsletter. Subcommission on Devonian Stratigraphy (2001), 18

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See detailLes tourbières analysées en profondeur par le radar de subsurface.
Wastiaux, C; Halleux, L; Schumacker, R et al

in Hautes Fagnes (2001), 243

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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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