References of "Vander Auwera, Jacqueline"
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See detailREE in bulk cumulates and the trapped liquid shift in the Bjerkreim-Sokndal layered intrusion (Norway)
Charlier, Bernard ULg; Vander Auwera, Jacqueline ULg; Duchesne, Jean-Clair ULg

in Geochimica et Cosmochimica Acta (2004, June), 68(11, Suppl. S), 632

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See detailSimilar sources for the Apuseni Mts and Banat (Romania) Late Cretaceous Banatitic magmatism
Vander Auwera, Jacqueline ULg; Berza, T.; Marincea, Stefan ULg et al

in Geochimica et Cosmochimica Acta (2004, June), 68(11, Suppl. S), 684

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See detailDerivation of the 1.0-0.9 Ga ferro-potassic A-type granitoids of southern Norway by extreme differentiation from basic magmas
Vander Auwera, Jacqueline ULg; Bogaerts, Michel; Liégeois, Jean-Paul ULg et al

in Precambrian Research (2003), 124(2-4), 107-148

Major and trace elements, Sr and Nd isotopic data as well as mineral compositions are presented for a selection of the 1.0 - 0.9 ferro-potassic A-type granitoids (Bessefjellet, Rustfjellet ... [more ▼]

Major and trace elements, Sr and Nd isotopic data as well as mineral compositions are presented for a selection of the 1.0 - 0.9 ferro-potassic A-type granitoids (Bessefjellet, Rustfjellet, Verhuskjerringi, Valle, Holum, Svöfjell, Handeland-Tveit, Åseral, Lyngdal gabbronorites) that occur close to the Mandal-Ustaoset Line of southern Norway. These hornblende biotite granitoids (HBG) define an extensive differentiation trend ranging from gabbronorites (50 wt % SiO2) to granites (77 wt % SiO2). This trend is interpreted as resulting from extreme fractional crystallization of several basaltic magma batches with similar major and trace elements compositions. At 930 Ma, the HBG suite displays a narrower range in ISr (0.7027 - 0.7056) than in Nd(t) (+1.97 down to -4.90) suggesting some assimilation of a Rb-depleted lower crust (AFC process) or/and source variability. An age of 929 ± 47 Ma is given by a Rb-Sr isochron on the Holum granite (Sri = 0.7046 ±0.0006, MSWD = 1.7). Geothermobarometers indicate a low pressure of emplacement (1.3-2.7 kbar) and an oxygen fugacity close to NNO. High liquidus temperatures are given by the apatite saturation thermometer (1005°C to 1054 °C) and are in agreement with results from other studies. The basaltic parent magmas of the HBG suite are partial melts of an hydrous mafic, potassic source lying either in the lithospheric upper mantle or in the mafic lower crust derived from it. This contrasts with the 930 Ma anorthosite-mangerite-charnockite suite (AMC) of the Rogaland Province for which a depleted lower crustal anhydrous gabbronoritic source has been indicated. The present data imply the penecontemporaneous melting of two contrasting sources in southern Norway. The source duality could result from an increasing degree of metamorphism (amphibolite to granulite) from East to West, an horizontal stratification of the lower crust or from the stratification of the lithosphere (melting of the lower crust or upper mantle). It may also indicate that the AMC and HBG suites formed in two distinct crustal segments. The linear alignment of the HBG suite along the Mandal-Ustaoset shear zone suggests that a linear uprise of the asthenosphere, following a lithospheric delamination under this structure, could be the vector of the mantle heat. [less ▲]

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See detailPetrology of the Lyngdal granodiorite (southern Norway) and the role of fractional crystallization in the genesis of Proterozoic rapakivi-like granites
Bogaerts, Michel; Scaillet, Bruno; Liégeois, Jean-Paul ULg et al

in Precambrian Research (2003), 124(2-4), 149-184

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See detailOrigin and evolution of Precambrian Anorogenic Magmatism
Vander Auwera, Jacqueline ULg; Martin, Hervé; Rämö, Tapani

in Precambrian Research (2003), 124(2-4), 105-344

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See detailOrigin and evolution of Proterozoic Anorogenic Magmatism
Vander Auwera, Jacqueline ULg; Martin, Hervé; Rämö, Tapani

in Vander Auwera, Jacqueline; Martin, Hervé; Rämö, Tapani (Eds.) Lithos (2003)

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See detailSmall mafic intrusions as indicators of downslope draining of dense residual liquids in anorthositic diapirs
Vander Auwera, Jacqueline ULg; Ernst, Gérald; Weis, Dominique et al

in Geophysical Research Abstracts (2003), 5

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See detailEmplacement of the Lyngdal granodiorite (SW Norway) at the brittle-ductile transition in a hot crust
Bogaerts, Michel; Scaillet, Bruno; Vander Auwera, Jacqueline ULg

in Geophysical Research Abstracts (2003), 5

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See detailThe north-eastern Polish anorthosite massifs: petrological, geochemical and isotopic evidence for a crustal derivation
Wiszniewska, Janina; Claesson, Stefan; Stein, Holly et al

in Terra Nova (2002), 14(6), 451-460

Deeply buried 1.5 Ga Polish anorthosites, accessible only by bore holes, reveal diagnostic features of some massif-type anorthosites (polybarism, jotunitic parent magma), diapirically emplaced in the mid ... [more ▼]

Deeply buried 1.5 Ga Polish anorthosites, accessible only by bore holes, reveal diagnostic features of some massif-type anorthosites (polybarism, jotunitic parent magma), diapirically emplaced in the mid crust together with the rapakivi granites of the EW-trending Mazury complex, intruded along a major crustal discontinuity. Geochemical modelling and isotope data corroborate recent experimental work on the basaltic system in dry conditions: the source rock of the parental magma is a gabbronorite, necessarily lying in the lower crust. Since no Archaean crust is known in the region, high initial Os-188/Os-187 ratios for sulphide-oxide isochrons and negative epsilon(Nd) values are best accounted for by melting a similar to 2.0 Ga mafic crust. [less ▲]

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See detailTrace element and isotope (Sr, Nd) geochemistry of porphyry- and skarn-mineralising Late Cretaceous intrusions from Banat, western South Carpathians, Romania
Dupont, Alain; Vander Auwera, Jacqueline ULg; Pin, Christian et al

in Mineralium Deposita (2002), 37(6-7), 568-586

Geochemical and isotopic (strontium, neodymium) data have been obtained from 24 samples of seven Late Cretaceous intrusions associated with skarn (Tincova, Bocsa, Ocna de Fier - Dognecea) and porphyry ... [more ▼]

Geochemical and isotopic (strontium, neodymium) data have been obtained from 24 samples of seven Late Cretaceous intrusions associated with skarn (Tincova, Bocsa, Ocna de Fier - Dognecea) and porphyry copper-molybdenum/skarn deposits (Oravita, Ciclova, Sasca and Moldova Noua) in the South Carpathians of Romania. The intrusions cut the Supragetic-Getic nappes and form a 100-km-long, NNE-SSW-trending lineament in the Banat metallogenic province. The samples range in composition from gabbro to granodiorite and define, in major and trace element variation diagrams, a calc-alkaline to high-potassium calc-alkaline trend ranging from 50 to 67% SiO2. They are magnetite-bearing, I-type granitoids enriched in LILE/LREE and depleted in Nb, Ta and Zr, common features for magmas associated with subduction zones. The lack of cumulate textures and of positive europium anomalies seems to indicate that the samples represent liquid compositions. The observed trend thus approximates a liquid line of descent resulting from fractional crystallisation of parental magmas with similar major and trace element compositions. Initial strontium isotopic ratios (Sr-i) vary from 0.7042 to 0.7058 and epsilon(Nd(t)) values range from + 3.9 to -0.2. Variations of Sri and epsilon(Nd(t)) values with SiO2 show minor crustal assimilation. The generally positive epsilon(Nd(t)) values, together with moderate Sri, indicate that the parental magmas result from partial melting of a rubidium-enriched and LREE-depleted source, such as a heterogeneous lithospheric mantle or a young mafic lower crust derived from it. Selective rubidium enrichment probably occurred during a previous subduction event by metasomatism of the overlying mantle wedge, either in the Early Cretaceous or earlier, as suggested by T-DM model ages (ca. 600 Ma). The Cu-Mo(-Pb-Zn-Fe) deposits are intimately associated with the intrusions, and the Banat (Romania) region can be subdivided in two metallogenic zones. In northern Banat, Fe-Cu-Pb-Zn skarns occur whereas in southern Banat, porphyry-style copper and molybdenum deposits predominate. These differences result from a combination of several parameters: (1) magma composition, whereby copper- and molybdenum-rich deposits tend to be associated with calc-alkaline compositions; (2) an increase of the present-day erosion level, from south to north, as indicated by the presence of large equigranular plutons in northern Banat, and of porphyritic cupolas and apophyses associated with porphyry-style mineralisation in southern Banat; (3) the nature of the host rocks, with skarns preferentially developed in calcareous host rocks; and (4) local variations of conditions controlling the infiltration of fluids and the precipitation of ore minerals. [less ▲]

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See detailThe jotunitic and the acidic igneous rocks
Vander Auwera, Jacqueline ULg; Bolle, Olivier ULg; Duchesne, Jean-Clair ULg

in Duchesne, Jean-Clair (Ed.) The Rogaland Intrusive Massifs: an excursion guide (2001)

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See detailThe Rogaland intrusive massifs: eastern part
Duchesne, Jean-Clair ULg; Demaiffe, Daniel; Vander Auwera, Jacqueline ULg et al

in Duchesne, Jean-Clair (Ed.) The Rogaland intrusive massifs: an excursion guide (2001)

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See detailTi deposits in anorthosite; geochemical constraints on the economic value
Duchesne, Jean-Clair; Vander Auwera, Jacqueline ULg

in Proceedings of the Biennial SGA Meeting (2001), 6

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See detailPetrology and geochemistry of rapakivi-type granites from the crystalline basement of NE Poland
Baginski, Boguslaw; Duchesne, Jean-Clair ULg; Vander Auwera, Jacqueline ULg et al

in Geological Quarterly (2001), 45(1), 33-52

The collection of 80 rock samples coming from drillcores of 8 localities from the Mazury Complex (Polish part of the crystalline East European Craton) and representing different rock types from ... [more ▼]

The collection of 80 rock samples coming from drillcores of 8 localities from the Mazury Complex (Polish part of the crystalline East European Craton) and representing different rock types from monzodiorites to leucogranites, were studied for major, trace and REE elements by XRF and ICP-MS methods. The range in composition of investigating rocks varies from 46% to 76% SiO2 contents. All of them show similar REE distributions, what suggests that they are genetically linked. They also plot along a major trend with many similarities to the jotunitic liquid line of descent (LLD) defined in AMCG rocks from Rogaland (Norway). Each group of rocks has however its own characteristics considering specific elements, such as REE, Sr or Zr. [less ▲]

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See detailGeochemical constraints on the petrogenesis of the O'okiep intrusive rocks (Namaqualand, S. Africa) : a lower crustal mafic source
Duchesne, Jean Clair; Vander Auwera, Jacqueline ULg; Clifford, Tom

in Journal of Conference Abstracts (2001), 6

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See detailDyke swarms in the Pan-African basement from the Alpine Danubian window : new field and geochemical investigation in southern Carpathians (Romania)
Femenias, Olivier; Demaiffe, Daniel; Liégeois, Jean-Paul ULg et al

in Journal of Conference Abstracts (2001), 6

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