Université de Neuchâtel

Phosphogenesis and organic-carbon preservation in the Miocene Monterey Formation at Naples Beach, California—The Monterey hypothesis revisited

Föllmi, Karl B. ; Badertscher, Christophe ; de Kaenel, Eric ; Stille, Peter ; John, Cédric M. ; Adatte, Thierry ; Steinmann, Philipp

In: GSA Bulletin, 2005, vol. 117, no. 5-6, p. 589-619

The middle part of the Miocene Monterey Formation at Naples Beach, west of Santa Barbara, California, is predominantly composed of organic-rich mudstone interstratified with phosphatic laminae. Minor lithologies include volcanic ash, dolomite, porcelanite and chert, and condensed phosphatic beds. Sediments dated as 14.3–13.5 Ma have average total organic carbon (TOC) values around 8.5 wt%, and...

Université de Fribourg

Airborne particles in the urban environment

Grobéty, Bernard ; Gieré, Reto ; Dietze, Volker ; Stille, Peter

In: Elements, 2010, vol. 6, no. 4, p. 229-234

Particulate matter is an important constituent of our atmosphere and has a critical impact on natural processes and human health. Although they are a minor component of the average global mass flux, anthropogenic particles are abundant in the urban environment, where they contribute substantially to air pollution. Particulate matter is routinely monitored in urban areas, but different particle...

Université de Fribourg

Miocene shallow-water limestones from São Nicolau (Cabo Verde): Caribbean-type benthic fauna and time constraints for volcanism

Bernoulli, Daniel ; Hottinger, Lukas ; Spezzaferri, Silvia ; Stille, Peter

In: Swiss Journal of Geosciences, 2007, vol. 100, no. 2, p. 215-225

Shallow-water limestones of presumed Late Cretaceous and Eocene age, interbedded with basaltic lavas, were described by earlier authors from São Nicolau in the northwestern part of the Cabo Verde archipelago. If confirmed, these ages would imply late Mesozoic shallow-marine and subaerial volcanic activity in the Cabo Verde archipelago, and document a geological history very different from that...