Sm-Nd isotopic dating of Proterozoic clay material: An example from the Francevillian sedimentary series, Gabon

Chemostratigraphy of Paleoproterozoic carbonate successions of the Wyoming Craton: tectonic forcing of biogeochemical change?

“…The end of the carbon isotope excursion in Fennoscandia is constrained between 20629/2 and 21139/4 Ma (Karhu, 1993). Age constraints for the Francevillian Series, Gabon (Bros et al, 1992), agree with the Fennoscandian age constraints for the end of the biogeochemical anomaly. In addition, the end of the carbon isotope excursion in the upper part of the Pretoria Group, South Africa, preceded intrusion of the Bushveld complex and the associated Rooiberg Felsites dated at 20619/2 Ma (Walraven, 1997;Bekker et al, 2001a).…”

“…, Zagnitko and Lugovaya (1985), Prilutzky et al (1992) Hoshchevat-Zavalsk Suite, Bugskaya Series, Ukraine Boiko et al (1989) Rhodochrosite (Shnyukov and Orlovsky, 1980;Varentsov and Rakhmanov, 1980;Kulish et al, 1988) Zagnitko and Lugovaya (1986), Boiko et al (1989) (/35.8 (Zagnitko and Lugovaya, 1986) Apatite Lugovaya, 1989) Boiko et al (1989), Zagnitko and Lugovaya (1985) Boiko et al (1989), Zagnitko and Lugovaya (1985) Boiko et al (1989, Lugovaya (1985, 1989) Rodionovskaya Suite, Ingulo-Inguletzkaya Series, Ukraine Kulish et al (1988) Graphitic schists (Boiko et al, 1989) Apatite in quartzites (Yur'ev, 1968) Overlies mafic volcanics (Kulish et al, 1988) Zagnitko High phosphate content of iron formation (Leclerc and Weber, 1980) Weber (1972) Gauthier-Lafaye and Weber (1989), Bros et al (1992) Birimian Supergroup, West Africa (Nsuta, Ghana; Tambao, Birkina Faso; Mokta and Ziemougoula, Côte d'Ivoire)…”

Integrating 40Ar–39Ar, 87Rb–87Sr and 147Sm–143Nd geochronology of authigenic illite to evaluate tectonic reactivation in an intraplate setting, central Australia

“…Previously such work utilised Rb-Sr dating or a combination of RbSr and K-Ar (Ohr et al, 1991;Uysal et al, 2001;Uysal et al, 2004;Golding et al, 2006;Uysal et al, 2011). Dating by the Sm-Nd method was also integrated into these works, with varying success, due to its resistance to isotopic resetting compared to the Sr-or Ar-systems and allowed dating of multiple periods of hydrothermal fluid flow (Stille and Clauer, 1986;Ohr et al, 1991;Bros et al, 1992;Schaltegger et al, 1994;Toulkeridis et al, 1998).…”

“…By utilising granite-and sediment-hosted authigenic illite from the previously unrecorded periods of active tectonism (Stille and Clauer, 1986;Bros et al, 1992;Awwiller, 1994;Schaltegger et al, 1994;Zwingmann et al, 1999;Uysal et al, 2001). …”

Palaeoproterozoic to Eoarchaean crustal growth in southern Siberia: a Nd-isotope synthesis

“…The Nd isotope system of meta-sedimentary rocks may be disturbed during diagenesis and metamorphic processes (Stille and Clauer, 1986;Bros et al, 1992;Bock et al, 1994 andCullers et al,1997). However, for such kind of samples it is possible to use a "two-stage" model age calculation (Keto and Jacobsen, 1987).…”