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See detailPrecambrian geodynamics and ore formation: The Fennoscandian Shield
Weihed, Pär; Arndt, Nicholas; Billström, Kjell et al

in Ore Geology Reviews (2005), 27(1-4), 273-322

Compared with present-day global plate tectonics, Archaean and Palaeoproterozoic plate tectonics may have involved faster moving, hotter plates that accumulated less sediment and contained a thinner ... [more ▼]

Compared with present-day global plate tectonics, Archaean and Palaeoproterozoic plate tectonics may have involved faster moving, hotter plates that accumulated less sediment and contained a thinner section of lithospheric mantle. This scenario also fits with the complex geodynamic evolution of the Fennoscandian Shield from 2.06 to 1.78 Ga when rapid accretion of island arcs and several microcontinent-continent collisions in a complex array of orogens was manifested in short-lived but intense orogenies involving voluminous magmatism. With a few exceptions, all major ore deposits formed in specific tectonic settings between 2.06 and 1.78 Ga and thus a strong geodynamic control oil ore deposit formation is suggested. All orogenic gold deposits formed syn- to post-peak metamorphism and their timing reflects the orogenic younging of the shield towards the SW and west. Most orogenic gold deposits formed during periods of crustal shortening with peaks at 2.72 to 2.67, 1.90 to 1.86 and 1.85 to 1.79 Ga. The ca. 2.5 to 2.4 Ga Ni-Cu PGE deposits formed both as part of layered igneous complexes and associated with mafic volcanism, in basins formed during rifling of the Archaean craton at ca. 2.5 to 2.4 Ga. Svecokarelian ca. 1.89 to 1.88 Ga Ni-Cu deposits are related to mafic-ultramafic rocks intruded along linear belts at the accretionary margins of microcratons. All major VMS deposits in the Fennoscandian Shield formed between 1.97 and 1.88 Ga, in extensional settings, prior to basin inversion and accretion. The oldest "Cyprus-type" deposits were obducted onto the Archaean continent during the onset of convergence. The Pyhasalmi VMS deposits formed at 1.93 to 1.91 Ga in primitive, bimodal arc complexes during extension of the arc. In contrast, the Skellefte VMS deposits are 20 to 30 million years younger and formed in a strongly extensional intra-arc region that developed on continental or mature arc crust. Deposits in the Bergslagen-Uusimaa belt are similar in age to the Skellefte deposits and formed in a microcraton that collided with the Karelian craton at ca. 1.88 to 1.87 Ga. The Bergslagen-Uusimaa belt is interpreted as an intra-continental, or continental margin back-arc, extensional region developed on older continental crust. Iron oxide-copper-gold (IOCG) deposits are diverse in style. At least the oldest mineralizing stages, at ca. 1.88 Ga, are coeval with calc-alkaline to monzonitic magmatism and coeval and possibly cogenetic subaerial volcanism more akin to continental arcs or to magmatic arcs inboard of the active subduction zone. Younger mineralization of similar style took place when S-type magmatism occurred at ca. 1.80 to 1.77 Ga during cratonization distal to the active N-S-trending subduction zone in the west. Possibly, interaction of magmatic fluids with evaporitic sequences in older rift sequences was important for ore formation. Finally, the large volumes of anorthositic magmas that characterize the Sveconorwegian Orogeny formed a major concentration of Ti in the SW part of the Sveconorwegian orogenic belt under granulite facies conditions, about 40 million years after the last regional deformation of the Sveconorwegian Orogeny, between ca. 930 and 920 Ma. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detailPrecambrian microfossils from Mbuji-Mayi Supergroup, Democratic Republic of Congo
Kabamba Baludikay, Blaise ULg

Diverse speeche and writing (2013)

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See detailPrécarité de la reconnaissance. Des luttes aux conditions de la reconnaissance
Van Caillie, Céline ULg

Scientific conference (2013, November 28)

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See detailPrécarité et dignité - comment devient-on "inutile au monde"?
Delruelle, Edouard ULg

in Verdussen, Marc (Ed.) Les droits culturels et sociaux des plus défavorisés (2009)

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See detailPrécarité et parentalité difficile : une aide coordonnée au bénéfice de l’enfant. « Seconde Peau », le projet de maisons médicales et d’hôpitaux liégeois
Vanmeerbeek, Marc ULg

Conference (2010, December 11)

Une collaboration entre des centres de santé de première ligne (maisons médicales) et des services hospitaliers (Service SOS Familles du CHC - Liège et maternité universitaire au CHR de la Citadelle ... [more ▼]

Une collaboration entre des centres de santé de première ligne (maisons médicales) et des services hospitaliers (Service SOS Familles du CHC - Liège et maternité universitaire au CHR de la Citadelle - Liège) a permis de mettre sur pieds une intervention précoce dans le milieu de vie au bénéfice de nourrissons et jeunes enfants victimes de négligence ou de troubles de l'attachement. [less ▲]

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See detailPrécarité psycho-sociale différentielle des hommes et des femmes
Born, Michel ULg; Gavray, Claire ULg

in Cahiers de l'IPSA (1996), 19

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See detailLa précarité psychosociale différentielle entre hommes et femmes
Born, Michel ULg; Gavray, Claire ULg

in Neuilly, M. (Ed.) La disqualification (1996)

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See detailPrecast Hollow Core Slabs in Fire: Numerical Simulations and Experimental Tests
Dotreppe, Jean-Claude ULg; Franssen, Jean-Marc ULg

in Franssen, Jean-Marc; Benichou; Kodur (Eds.) et al Proceedings of SiF'04: Third International Structures in Fire workshop (2004)

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See detailLa précaution en droit administratif, Rapport international de synthèse
Pâques, Michel ULg

in General Reports - Rapports généraux, XVIIe Congrès de l'Académie internationale de droit comparé (2007)

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See detailLa précaution en droit administratif, Rapport international de synthèse
Pâques, Michel ULg

in Le principe de précaution en droit administratif - Precautionary Principle and Administrative Law (2007)

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See detailLa précession du plan d'oscillation du pendule de Foucault : une approche géométrique intuitive
De Rop, Yves ULg; Moreau, Olivier

in Revue des Questions Scientifiques (2002), 173(3), 261-276

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See detailPrecessional and half-precessional climate forcing of Mid-Devonian monsoon-like dynamics
De Vleeschouwer, David; Da Silva, Anne-Christine ULg; Boulvain, Frédéric ULg et al

in Climate of the Past (2012), 8

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See detailPrecessional and half-precessional climate forcing of Mid-Devonian monsoon-like dynamics
De Vleeschouwer, David; Da Silva, Anne-Christine ULg; Boulvain, Frédéric ULg et al

in Suttner; Kido; Piller (Eds.) et al Mid Paleozoic climate and biodiversity. IGCP-596 opening meeting. Abstract Volume (2011)

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See detailPrecessional and half-precessional climate forcing of Mid-Devonian monsoon-like dynamics
De Vleeschouwer; Da Silva, Anne-Christine ULg; Boulvain, Frédéric ULg et al

in Climate of the Past Discussions (2011), 7

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See detailPrêcher la Trinité dans le royaume carolingien. Un facteur de cohésion de l’Imperium christianum ?
Close, Florence ULg

Scientific conference (2008, October 04)

Une lecture attentive des admonestations ecclésiastiques de Charlemagne laisse entrevoir un renforcement très net du souci du souverain de l'enseignement de la doctrine chrétienne au lendemain du ... [more ▼]

Une lecture attentive des admonestations ecclésiastiques de Charlemagne laisse entrevoir un renforcement très net du souci du souverain de l'enseignement de la doctrine chrétienne au lendemain du couronnement impérial. La foi en la Trinité s'impose dans les capitulaires des missi des quinze premières années du IXe siècle comme l'une des priorités du programme religieux. Or, cet intérêt impérial ne date pas du couronnement. Il était déjà exprimé dans le texte fondateur de la réforme carolingienne, l'Admonitio Generalis de 789. Dans cette communication, l'auteur proposait un passage en revue des grandes étapes de l'instauration de l'enseignement de la doctrine trinitaire, d’abord en Francia, puis dans l'empire suivi d'un examen de quelques textes représentatifs du processus de maturation de la "théologie impériale". Il s'arrêtait ensuite sur les moyens mis à la disposition du clergé pour se préparer à enseigner ce mystère avant de formuler l'hypothèse d'une notable influence de cette "prédication" de la Trinité sur le processus d'unification de l'empire renaissant. [less ▲]

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See detailPrecipitation of auroral protons in detached arcs
Immel, Thomas J; Mende, Stephen B; Frey, Harald U et al

in Geophysical Research Letters (2002), 29

Recent global-scale observations by the IMAGE-FUV instrument demonstrate the existence of regions of particle precipitation at sub-auroral latitudes on the dayside. The signature of this precipitation is ... [more ▼]

Recent global-scale observations by the IMAGE-FUV instrument demonstrate the existence of regions of particle precipitation at sub-auroral latitudes on the dayside. The signature of this precipitation is seen infrequently, but when so, it is clear in all 3 channels of the FUV instrument. A conjugate hemisphere conjunction with the FAST satellite demonstrates the presence of precipitating protons and the notable absence of precipitating electrons in these arcs. With this knowledge, one can determine the mean energy and energy flux of the precipitating protons by intercomparison of the response in the three FUV channels. Assuming that the protons have a kappa energy distribution, the mean energy is found to be ~20 keV, with a peak in total energy flux of ~1 mW/m[SUP]2[/SUP]/sec, consistent with fits to the FAST ion measurements. These phenomena are observed mainly during times of high solar wind dynamic pressure and variable interplanetary magnetic field, and are associated with earlier nightside enhancements in the brightness and latitudinal extent of the proton aurora. [less ▲]

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See detailPrécipitations atmosphériques et altitude. Prélude à une cartographie des montants annuel et mensuels en Belgique
Alexandre, Jean ULg; Erpicum, Michel ULg; Mabille, Georges ULg et al

in Publications de l'Association Internationale de Climatologie (1998), 11

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See detailPrécis d'urologie de l'enfant
Battisti, Oreste ULg

Book published by les éditions de l'Université de Liège (2012)

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