 | | Journal (article/letter/editorial) | | between 2171 ± 7 to 2113 ± 23 Ma (Bonkoungou, 1994; Bossière et al., 1996). In the West, the Birimian basement...composed of sericite, iron carbonates (ankerite/siderite) and disseminated magnetite. In the NW part, sericitic...et Structurale. University of Nantes, p. 419. Bossière, G., Bonkoungou, I., Peucat, J.J., Pupin, J.P |  | | Journal (article/letter/editorial) | | wide linear band along the Boni shear zone (BSZ) (Bossière et al., 1996; Koffi et al., 2016). These Tarkwaian-type...Safané village along the BSZ (detrital zircon U-Pb: Bossière et al., 1996) to 2115 ± 2 Ma in the Ouango-Fitini...muscovite with lesser chlorite and iron carbonates (siderite/ankerite) (Figs. 12d, f).They are hosted along...halo of muscovite and iron carbonates (ankerite/siderite) (Augustin et al., 2016) (Fig. 17a). This mineralization...maximum age of 2113 ± 23 Ma controlled by the BSZ (Bossière et al., 1996). These rocks are thus younger than |  | | Journal (article/letter/editorial) | | with minor pyrrhotite. Major gangue minerals are siderite, ankerite, calcite, barite, and quartz. The Signal...and Masi, U, 2000, Sr-isotopic composition of siderite for assessing the origin of mineralization fluids:...0361-0128/98/000/000-00 $6.00 155 Piqué, A., Bossière, G., Bouillin, J-P., Chalouan, A., and Hoepffner |  | | Report (issue) | | favored—depending on solutes and local pH—development of siderite, ferrous hydroxide, and/or iron (nickel) monosulfides...(Eh/pH) diagram illustrating the stabilities of siderite, mackinawite (as FeS), protoferredoxin, greigite...for modern atmospheric CO2. At higher pCO2 the siderite field would expand as indicated by arrows, at...Samples. The carbonate-facies BIF is dominated by siderite, with secondary pyrrhotite in veins and along...occurred. Carbonates from this formation, mainly siderite, give δ13Ccarb values from –3.9‰ to –0.4‰ (n = |  | | Book | | carbonate host rocks consist predominantly of Fe–Mg siderite (pistomesite) and ankerite, with subordinate amounts...(magnetite-hematite) stage with abundant calcite, siderite, and ankerite. Hydrothermal alteration of wall...muscovite-phengite, chlorite (Fe-ripidolite), carbonate (siderite, ankerite), leucoxene, and tourmaline. The origin...celestite, and, to a lesser extent, fluorite, siderite, and ankerite. At the Sidi Driss deposit, carbonate-hosted...quartz + siderite, (P2) galena + calcite ± sphalerite, (P3) galena + sphalerite + siderite, and (P4) |  | | Report (issue) | | the adjacent Acadian and Variscan fold belts in Belgium and northern France from geophysical and geological...1986, Ordovician-Silurian magmatic provinces in Belgium und the Caledonian orogeny in middle Europe: Geology...1990; Matte, 1991; Dalziel, 1997; Shelley and Bossière, 2000, 2002; Robardet, 2002; Stampfli et al.,...of the Variscan belt (Matte, 2002; Shelley and Bossière, 2002; Stampfli et al., 2002; Cartier and Faure... doi: 10.1007/s005310000156. Shelley, D., and Bossière, G., 2000, A new model for the Hercynian orogen |  | | Book | | cost to be recovered from output. Petrofina of Belgium, Lasmo from UK, International Petroleum Company...authigenic minerals, such as glauconite, pyrite and siderite (Said, 1990e). Toward the periphery of the Nile...Ooids contain hematite, limonite, berthierine, and siderite. The top of the Formation is marked by a conglomerate...and Flysch thrust sheets. In Greater Kabylie, Bossière & Peucat (1985) described a N70° dextral mylonitic...271 ± 12 Ma (Bossière & Peucat, 1985, 1986) and a U/Pb age of 273 ± 6 Ma (Peucat & Bossière, 1991). Accordingly |
|
