Transpressional deformations at lateral boundaries of propagating thrust-sheets: the example of the Meuse Valley Recess within the Ardennes Variscan fold-and-thrust belt (N France–S Belgium)

Lacquement, Frédéric; Averbuch, Olivier; Mansy, Jean-Louis; Szaniawski, Rafał; Lewandowski, Marek

doi:10.1016/j.jsg.2005.05.017

Cited by 15 publications

(17 citation statements)

References 33 publications

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“…At the same time, in Europe, the French Massif Central was affected by the synconvergent E-W oriented collapse of the thickened Variscan crust associated with intrusion of numerous syntectonic plutons [Faure, 1995;Faure et al, 2009, and references therein]. However, orogen-parallel extension in the French Massif Central operated simultaneously with thrusting along the northern margin of the central Armorican domain [Lacquement et al, 2005;Ballèvre et al, 2009] while E-W synconvergent gneiss domes were growing in the south in the Montagne Noire and Pyrenean regions [Denèle et al, 2009;Charles et al, 2009]. Further south, the Iberia Orocline was developing due to N-S shortening at 310-295 Ma [Gutiérrez-Alonso et al, 2011, 2012.…”

Section: Upper Carboniferous To Lower Permianmentioning

confidence: 99%

Tectonic evolution of the Rehamna metamorphic dome (Morocco) in the context of the Alleghanian-Variscan orogeny

et al. 2014

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Section: Upper Carboniferous To Lower Permianmentioning

confidence: 99%

Tectonic evolution of the Rehamna metamorphic dome (Morocco) in the context of the Alleghanian-Variscan orogeny

et al. 2014

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“…Along this major thrust, the Namurian-Westphalian coal-bearing foreland basin overlying a reduced Middle Devonian-Carboniferous sequence is underthrusted below the allochthonous Variscan unit floored by the rheologically weak, thick Lower Devonian siliciclastic sequence [Raoult and Meilliez, 1987;Lacquement et al, 1999]. Such a typical geometry has been interpreted recently to result from the inversion of the northern border fault of the Rheno-Hercynian basin that controlled the extension of the syn-rift Lower Devonian sequence [Oncken et al, 2000;Lacquement et al, 2005]. In the Artois area, these Lower Devonian rocks, characteristic for the allochthonous Variscan units, end towards the north against a network of en-échelon steeply S-dipping faults with a N110-N130 orientation, the so-called "Artois faults" [Gosselet, 1908;Briquet, 1924;Bouroz, 1948Bouroz, , 1956.…”

Section: Geological Settingmentioning

confidence: 99%

Inversion tectonics at the northern margin of the Paris basin (northern France): new evidence from seismic profiles and boreholes interpolation in the Artois area

Minguely

Averbuch

Patin

et al. 2010

Bulletin De La Société Géologique De France

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A synthesis of existing borehole data and seismic profiles has been conducted in the Artois area (northern France), along the northern border of the Paris basin, in order to explore the possible control exerted at depth by the Upper Carboniferous Variscan thrust front on the distribution of Late Paleozoic-Mesozoic depositional centers and their subsequent uplift in Tertiary times. Such control was demonstrated recently in the Weald-Boulonnais basin (Eastern Channel area) that forms the western prolongation of the area under study but was so far poorly constrained in the Artois area. Presented data provide evidence for the topography of the Artois hills and the altitude of sedimentary layers to be controlled by the activity of a network of relaying WNW-ESE striking faults inducing the systematic uplift of the southern fault blocks. Those steeply S-dipping faults branch downward onto the ramp of the Variscan thrusts forming listric faults that locally limit to the north buried half-graben structures, filled with fan-shaped fluviatile Stephanian-Permian deposits. Such clear syn-rift geometry shows that the ramp of the main Variscan frontal thrust (the Midi thrust) has been reactivated as a normal fault in Stephanian-Permian times thus forming a very demonstrative example of a negative inversion process. The reverse offset of the transgressive Middle Cretaceous-Lower Eocene layers covering unconformably the Paleozoic substratum argue for a Tertiary (Middle Eocene-Late Oligocene?) contractional reactivation of the fault network thereby documenting a repeated inversion process along the Artois Variscan thrust front. The Variscan frontal thrust zone is thus shown here to represent a prominent crustal-scale mechanical discontinuity that localized deformation in the Artois-Boulonnais area since Upper Paleozoic times. Inversion tectonique en bordure septentrionale du bassin de Paris (nord de la France) : nouvelles contraintes à partir de profils sismiques et de l'interpolation de forages en ArtoisMots-clés. -Front de chevauchement varisque, Héritage structural, Inversion tectonique, Bassin de Paris, Géodynamique du Nord de la FranceRésumé. -Une étude synthétique des données de forage et des profils sismiques existant a été entreprise dans la région de l'Artois (Nord de la France) afin de caractériser le contrôle potentiel exercé, en profondeur, par le front chevauchant varisque du Carbonifère supérieur sur la distribution des aires de sédimentation au cours du Paléozoïque terminal et du Mésozoïque et leur soulèvement plus tardif au cours du Tertiaire. Un tel contrôle a pu être démontré récemment dans le bassin du Weald-Boulonnais (Manche orientale) qui forme le prolongement occidental de la zone d'étude mais reste, pour l'heure, encore assez méconnu dans la région de l'Artois. Les données présentées montrent que la topographie des collines de l'Artois ainsi que l'altitude des niveaux sédimentaires de couverture sont contrôlées par l'activité d'un ré-seau de failles en relais, orientées suivant une direction WNW-ESE, induis...

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“…The results of his further study of the Holy Cross Mts. performed together with the French group from the University of Lille (France) were presented in several articles Lamarche et al 2003;Lamarche et al 2002;Lacquement et al 2005). In the same years together with scientist from Denmark he studied origin of natural magnetic remanence of Cambrian sandstones from Nexø (Lewandowski and Abrahamsen 2003).…”

Section: The Next Stage Of Palaeomagnetic Laboratory In a Newmentioning

confidence: 99%

“…In a short time he gained a competition for a co-tutelle Ph.D. fellowship for the years 1998-2003 and begun his investigations partly in our Laboratory and partly in the Lille 1 University (France). He expanded study of European Variscans further to the west with his thesis concerning palaeomagnetism and tectogenesis of European Variscans of Northern France and Southern Belgium Szaniawski et al 2003;Averbuch et al 2002Averbuch et al , 2006Lacquement et al 2005). After finishing of his thesis he performed interdisciplinary study in the Holy Cross Mts (Szaniawski 2008;Szaniawski and Lewandowski 2009;Szaniawski et al 2011) and Carpathians in cooperation with the Geological Faculty of Warsaw University, Polish Geological Institute, and universities in Padua and Naples (Italy) (Grabowski et al 2009Mazzoli et al 2010;Zattin et al 2011;Szaniawski et al 2013, Andreucci et al 2013) as well as Apennines (Mazzoli et al 2012).…”

Section: The Next Stage Of Palaeomagnetic Laboratory In a Newmentioning

confidence: 99%

Fifty Years of Palaeomagnetic Studies in the Institute of Geophysics, Polish Academy of Sciences

Kądziałko-Hofmokl

Werner

Kruczyk

2014

Achievements, History and Challenges in Geophysics

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Palaeo-and archaeomagnetic investigations in the Institute of Geophysics were initiated at the beginning of 1960s. The archaeomagnetic study was performed in the Geomagnetic Observatory in Hel till the mid-1980s and was resumed lately in the Warsaw laboratory. Palaeomagnetic study begun in 1963 but the palaeomagnetic group obtained necessary place for the laboratory in the Central Geophysical Observatory in the newly finished building in Belsk later in 1966. Formally, the Paleomagnetic Laboratory was established in 1972. From the very beginning, palaeomagnetic studies were accompanied by studies of magnetic properties of rocks and minerals-carriers of natural remanence and by measurements of magnetic susceptibility and its anisotropy. Therefore, the laboratory became successively equipped with the apparatus for strictly palaeomagnetic study (astatic and spinner magnetometers and demagnetizing devices) as well as with devices for rock-magnetic investigations (apparatus for thermoanalysis, system for measuring of hysteresis parameters and for study of magnetic remanence at low temperatures, torsion balance, device for study of magnetic properties under mechanical stress and temperature, device for study of alterations of magnetic minerals based on thermally stimulated emission of exo-electrons (TSEE). The last three devices have not been in use for several years. At the end of 1980s, the Institute moved to a new building and the whole laboratory was moved to Warsaw. Moving palaeomagnetic measurements to town was possible due to the replacement of spinner magnetometer by the cryogenic magnetometer SQUID, which is much more sensitive and less affected by the urban disturbances. Computer software packages that are written in the Institute or obtained from their inventors became a great help in the interpretation of experimental results. Palaeomagnetic investigations have been performed in our laboratory on rocks of various origins and age, coming from various regions of Poland and other countries often in cooperation with scientists from foreign laboratories. Numerous palaeomagnetic results that are obtained in our laboratory are in

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Transpressional deformations at lateral boundaries of propagating thrust-sheets: the example of the Meuse Valley Recess within the Ardennes Variscan fold-and-thrust belt (N France–S Belgium)

Cited by 15 publications

References 33 publications

Tectonic evolution of the Rehamna metamorphic dome (Morocco) in the context of the Alleghanian-Variscan orogeny

Tectonic evolution of the Rehamna metamorphic dome (Morocco) in the context of the Alleghanian-Variscan orogeny

Inversion tectonics at the northern margin of the Paris basin (northern France): new evidence from seismic profiles and boreholes interpolation in the Artois area

Fifty Years of Palaeomagnetic Studies in the Institute of Geophysics, Polish Academy of Sciences

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