Tectonic and climatic control of Paleogene sedimentation in the Rhenodanubian Flysch basin (Eastern Alps, Austria)

Geochemical study of lower Eocene volcanic ash layers from the Alpine Anthering Formation, Austria.

“…The flysch sediments (Barremian-Ypresian) were deposited in an abyssal environment at the northwestern Tethyan margin (Egger et al, 2002). The youngest deposits of the Rhenodanubian Flysch are exposed close to the small village of Anthering, 10 km north of the town Salzburg (see Fig.…”

Out-of-sequence thrusts and paleogeography of the Rhenodanubian Flysch Belt (Eastern Alps) revisited

“…Such rotations could have affected the orientation of paleocurrent indicators. The only regional study of this aspect in the Rhenodanubian Flysch by Egger et al (2002; Fig. 2) revealed minor counterclockwise rotations between 5°and 7°between Salzburg and Steyr, where left-lateral faults of different trend dominate.…”

“…A further look at the data reveals that within the Altlengbach Fm. a significant change in heavy mineral spectra exists (Woletz 1962;Schnabel 1992b;Faupl 1996); the older parts are garnet-dominated and characterized by W-directed paleocurrents (Schnabel 1992b;Egger et al 2002) intersecting with the strike of the flysch belt from the south. Egger et al (2002) also found Maastrichtian paleoflow directions from the north.…”

“…a significant change in heavy mineral spectra exists (Woletz 1962;Schnabel 1992b;Faupl 1996); the older parts are garnet-dominated and characterized by W-directed paleocurrents (Schnabel 1992b;Egger et al 2002) intersecting with the strike of the flysch belt from the south. Egger et al (2002) also found Maastrichtian paleoflow directions from the north. Postmid-Danian beds are ZTR-dominated which were transported from the west and northwest (Schnabel 1992b) intersecting with the flysch zone's overall trend from the north.…”

Clay mineralogy and calcareous nannofossils from Jagüel and Roca formations in the eastern sector of Pellegrini Lake, Neuquen Basin, República Argentina.

“…Este retrabajo podría ser explicado en parte como consecuencia de una caída importante del nivel del mar ocurrido en la Cuenca Neuquina durante el Daniano (Casadío, 1994), relacionado con cambios en la subsidencia regional y oscilaciones eustáticas, que pudo haber inducido a la erosión de sedimentos más antiguos. También podría explicarse como resultado de un levantamiento tectónico (fase Larámica, primeros movimientos de la fase Andina) durante el Maastrichtiano tardío-Daniano temprano, o como la combinación de los factores eustáticos, actuando en conjunto con los tectónicos (Gibsson et al, 2000;Egger et al, 2002). Este retrabajo de los nanofósiles también ha sido observado en otros sectores de la cuenca, entre ellos en el sur de la provincia de Mendoza (Concheyro y Villa, 1996;Concheyro, 2004).…”