... at the base of the sedimentary pile in the Bosmoreau basin provide an age of 332 ± 4 Ma, identical to the 333 ± 2 Ma age obtained from a rhyolitic lava sampled in the Decazeville basin. In addition, both volcanic rocks contain inherited or xenocrystic zircons, reflecting the ages of the basement and/or source...

...F ig . 1. – Schematic geologic map of the area between the Lacapelle-Marival and Decazeville basins. Analysed samples are located. A: schematic geologic map of the French Massif central [from Basile, 2006 ]. B: synthetic lithostratigraphic column of the Decazeville basin [from Basile, 2006...

...Frederic Marie Bergounioux; Jeanne Doubinger Abstract Microscopic study of the limnic coals of the Decazeville basin, France, reveals differences between these and paralic coals, which result from the difference in size of their respective depositional basins. Classification of the elements...

...Jeanne Doubinger; Pierre Vetter Abstract Sphenophyllum impressions in Carboniferous sandstones of the Decazeville coal basin, France, are identified as S. Costae. The excellent state of preservation reveals details of venation not visible in the original specimens, and also shows that S...

...Jeanne Doubinger Abstract Describes a new species of Emplectopteris, E. ruthenensis, collected from the Decazeville coal basin, France, amongst a classic upper Stephanian (Carboniferous) flora. Widespread in Permo-Carboniferous deposits of the paleobotanical province of Cathaysia, the genus...

... Index (HI) and Liétard Index (LI) using X-ray diffraction data. Chosen example is a diffractogram of the highly ordered DCV kaolinite sample from Decazeville (France). The Liétard Index (here abbreviated as “LI” and not “R2” as is usual in the literature, to avoid any confusion...

... sequences on top of thick coal seams. A, Decazeville coal basin, west side of the syncline; B, C, D, E, Blanzy-Montceau coal basin; B, Lucy opencast 2 t couche; C, Maugrand opencast borehole 515; D, Sorme I1 opencast l& couche; E Ste-Htltne opencast I t couche. F-F,, First layer (in ascending sequence over...

... compounds. Their variety and abundance decrease from V1 soil to D13 soil as shown in Table 3 . The Riou Mort River drains the Decazeville basin (Aveyron, SW France) and was affected by heavy-metal contamination while running through a former industrial Zn-ore smelting plant (Fig. 1 ) in activity from...

... occidentale est un fait bien avéré. Des paléoprofils latéritiques sont connus au Carbonifère (bauxites de Decazeville ; Bellenguez, 1987 ), sous le Permien, sous le Trias, sous le Lias, au Crétacé inférieur, dans la première partie du Tertiaire (Paléocène-Eocène), puis au Néogène ( Wyns et al. , 2003...

... , 275 – 290 . Basile C. ( 2006 ). – A new interpretation of Stephanian deformation in the Decazeville basin (Massif Central, France): consequences on late Variscan tectonism . – Int. J. Earth Sci. , 95 , 5 , 791 – 801 . Benard F. Charpal O.D. Mascle A. Tremolieres P...

...-stretching modes of a well-ordered and coarse kaolinite sample from Decazeville, France (top). The four absorption bands were fitted using an additional contribution to match the broader high-frequency band. The theoretical absorption spectrum computed for a platy particle in a KBr matrix is reported in red...

... are observed toward less radiogenic values between 540 and 520 Ma and toward more radiogenic values at 367 and 300 Ma. These variations are related to different sedimentary settings and to a volcanic event (300 Ma) detected in a continental basin. Results indicate that, in any case, radiogenic ε Nd T values do...

... Decazeville, Decize–La Machine and Blanzy–Le Creusot basins ( Langiaux 1984 ; Broutin 1986 ; Broutin et al. 1990 , 1999 ). In the Aumance Basin, specifically, the acknowledged Stephanian–Autunian boundary is based on sedimentological and stratigraphic (discontinuity) criteria, preventing any correlation...

...: 50 000, feuille de Domène (773) , 2 nd edition. Basile C. ( 2006 ). “ A new interpretation of Stephanian deformation in the Decazeville basin (Massif Central, France): consequence on late Variscan tectonism .” Internat. J. Earth Sci. , 95 , 791 – 801 . Bodinier J.-L...

... ]. However, the bottom consists frequently of Upper Visean volcano-sedimentary deposits [ Letourneur, 1953 ; Brousse et al ., 1981 ]. It is worth noting that more to the south of the Sillon Houiller, in the Decazeville coal basin, Bruguier et al . [1998] have dated tuff that constitutes the basis...

..., 1984 ; Sider and Ohnenstetter, 1986 ; Delfour et al. , 1989 ; Leloix et al. , 1999 ; Faure et al. , 2002 ). A similar age of 332 ± 2 Ma has been obtained by U-Pb TIMS on zircon from a rhyolite sampled in the Decazeville basin ( Bruguier et al. , 1998 ). These Visean volcanic rocks are locally...

... into steeply dipping, often isoclinal synclines delimited by foreland-directed thrust faults; a steep basin margin with paleovalleys occurs on the hinterland side. One of these tectonic outliers is the La Magdalena Coalfield, of “Saberian” age, where the quantification of a substantial floral record (140 taxa...