A5083928017- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geochemistry and Elemental Analysis
- Geological formations and processes
- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies
- Marine and coastal ecosystems
- Isotope Analysis in Ecology
- Reservoir Engineering and Simulation Methods
- Geological Formations and Processes Exploration
- Geological and Geophysical Studies Worldwide
- Paleontology and Evolutionary Biology
- Groundwater and Isotope Geochemistry
- Radioactive element chemistry and processing
- Heavy metals in environment
- earthquake and tectonic studies
- Marine and environmental studies
- Diatoms and Algae Research
- Astro and Planetary Science
- Radioactive contamination and transfer
- Mercury impact and mitigation studies
University of Lausanne
2012-2021
Virginia Tech
2020
Aarhus University
2020
Terre des Hommes
2013-2014
University of Neuchâtel
2000-2010
In-Q-Tel
2009
ETH Zurich
1990-1996
Board of the Swiss Federal Institutes of Technology
1995
University of California, Santa Cruz
1990
Research Article| June 01, 1994 Phosphogenesis, carbon-isotope stratigraphy, and carbonate-platform evolution along the Lower Cretaceous northern Tethyan margin KARL B. FÖLLMI; FÖLLMI 1Geological Institute, ETH Center, CH-8092 Zürich, Switzerland Search for other works by this author on: GSW Google Scholar HELMUT WEISSERT; WEISSERT MARTIN BISPING; BISPING HANSPETER FUNK Author Article Information Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674...
The evolution of the Early Cretaceous, northern Tethyan carbonate platform was not only influenced by changes in sea level, detrital influx, and surface water temperature but also trophic levels. We distinguish between phases production dominated oligotrophic photozoan communities mesotrophic eventually colder‐water heterozoan communities. Superimposed on this bimodal trend were demise for which we provide improved age control based ammonite biostratigraphy. initial phase these episodes...
Research Article| June 01, 2007 Phosphorus and the roles of productivity nutrient recycling during oceanic anoxic event 2 Haydon P. Mort; Mort 1Institute Geology, University Neuchâtel, Rue Emile Argand 11, Case postale 158, CH-2009 Neuchatel, Switzerland Search for other works by this author on: GSW Google Scholar Thierry Adatte; Adatte Karl B. Föllmi; Föllmi Gerta Keller; Keller 2Department Geosciences, Princeton University, Guyot Hall, Princeton, New Jersey 08544-1003, USA Philipp...
Palaeoenvironmental and palaeoclimatic changes during the Toarcian Oceanic Anoxic Event (T-OAE) are reported from two successions deposited in Andean Basin (Chile), based on a high-resolution biostratigraphic (calcareous nannofossils), sedimentological, mineralogical geochemical analysis. A large negative carbon-isotope excursion was identified lower storm-dominated marl–limestone alternation, underlining global extent of carbon-cycle perturbation occurrence episodic high-energy conditions...
Research Article| September 01, 1995 160 m.y. record of marine sedimentary phosphorus burial: Coupling climate and continental weathering under greenhouse icehouse conditions Karl B. Föllmi 1Geological Institute, Eidgenössische Technische Hochschule, 8092 Zürich, Switzerland Search for other works by this author on: GSW Google Scholar Author Article Information Publisher: Geological Society America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print 0091-7613 Geology (1995) 23 (9):...
The Triassic‐Jurassic boundary mass‐extinction event (T‐J; 199.6 Ma) is associated with major perturbations in the carbon cycle recorded stable isotopes. Two rapid negative isotope excursions bulk organic ( δ 13 C org ) occur within immediate interval at multiple locations and have been linked to outgassing of 12 C‐enriched CO 2 from Central Atlantic Magmatic Province. In British Columbia, a positive excursion +5‰ (Vienna Peedee belemnite (V‐PDB)) spans part or all subsequent Hettangian...
Abstract The Valanginian stage (Early Cretaceous) includes an episode of significant environmental changes, which are well defined by a positive δ 13 C excursion. This globally recorded excursion indicates important perturbations in the carbon cycle, has tentatively been associated with pulse volcanic activity and formation Paraná-Etendeka large igneous province (LIP). Uncertainties existing age models preclude, however, its identification as trigger changes. Here we report that sediments...
Abstract The early Aptian recorded one of the most significant episodes environmental change during Mesozoic—the Selli oceanic anoxic episode (OAE 1a). It has often been suggested that magmatic activity related to emplacement Greater Ontong Java large igneous province (LIP) triggered OAE 1a. A major challenge, however, resides in establishment precise temporal relationships between perturbations associated with 1a and phases volcanic activity. In this study we evaluate potential mercury (Hg)...