Université de Neuchâtel

Platform-induced clay-mineral fractionation along a northern Tethyan basin-platform transect: implications for the interpretation of Early Cretaceous climate change (Late Hauterivian-Early Aptian)

Godet, Alexis ; Bodin, Stéphane ; Adatte, Thierry ; Föllmi, Karl B.

In: Cretaceous Research, 2008, vol. 29, no. 5-6, p. 830-847

High-resolution clay-mineral analyses were performed on upper Hauterivian to lower Aptian sediments along a platform-to-basin transect through the northern Tethyan margin from the Neuchâtel area (Switzerland), to the Vocontian Trough (France) in order to investigate links between climate change, carbonate platform evolution, and fractionation patterns in clay minerals during their transport....

Université de Neuchâtel

Enrichment of redox-sensitive trace metals (U, V, Mo, As) associated with the late Hauterivian Faraoni oceanic anoxic event

Bodin, Stéphane ; Godet, Alexis ; Matera, Virginie ; Steinmann, Philipp ; Vermeulen, Jean ; Gardin, Silvia ; Adatte, Thierry ; Coccioni, Rodolfo ; Föllmi, Karl B.

In: International Journal of Earth Sciences, 2007, vol. 96, no. 2, p. 327-341

The Faraoni Level is a short-lived oxygen-deficient event that took place during the latest Hauterivian. In order to improve our understanding of the palaeoenvironmental conditions that occurred during this event, we have analysed the contents of several redox-sensitive trace elements (U, V, Mo, As, Co, Cd, Cu, Zn, Ni, Pb, Cr) from bulk limestone samples of late Hauterivian–early Barremian age...

Université de Neuchâtel

The late Hauterivian Faraoni oceanic anoxic event in the western Tethys: Evidence from phosphorus burial rates

Bodin, Stéphane ; Godet, Alexis ; Föllmi, Karl B. ; Vermeulen, Jean ; Arnaud, Hubert ; Strasser, André ; Fiet, Nicolas ; Adatte, Thierry

In: Palaeogeography, Palaeoclimatology, Palaeoecology, 2006, vol. 235, p. 245-264

In the uppermost Hauterivian sediments of the western Tethys, a short-lived anoxic event (Faraoni event) is documented both in the form of an interval enriched in organic matter (pelagic realm) and in a condensed interval enriched in glauconite and phosphate (shelf realm). This latter interval represents the onset of a drowning episode on the Helvetic carbonate platform along the northern tethyan...

Université de Neuchâtel

Evolution of the marine stable carbon-isotope record during the early Cretaceous : A focus on the late Hauterivian and Barremian in the Tethyan realm

Godet, Alexis ; Bodin, Stéphane ; Föllmi, Karl B. ; Vermeulen, Jean ; Gardin, Silvia ; Fiet, Nicolas ; Adatte, Thierry ; Berner, Zsolt ; Stüben, Doris ; Van de Schootbrugge, Bas

In: Earth and Planetary Science Letters, 2006, vol. 242, p. 254-271

In order to improve our understanding of the relationships between the late Hauterivian oceanic anoxic Faraoni event, contemporaneous platform drowning along the northern Tethyan margin and global environmental change in general, we established high-resolution δ13C and δ18O curves for the late Hauterivian and the entire Barremian stage. These data were obtained from whole-rock carbonate samples...