A5044592820- Paleontology and Stratigraphy of Fossils
- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Marine Biology and Ecology Research
- Radioactive element chemistry and processing
- High-pressure geophysics and materials
- Isotope Analysis in Ecology
- International Relations in Latin America
University of Copenhagen
2019-2023
University of Chile
2016-2019
The Great Ordovician Biodiversification Event (GOBE) represents the greatest increase in marine animal biodiversity ever recorded. What caused this transformation is heavily debated. One hypothesis states that rising atmospheric oxygen levels drove biodiversification based on premise animals require for their metabolism. Here, we present uranium isotope data from a Middle carbonate succession shows steepest rise generic richness occurred with global redox stability. Ocean oxygenation ensued...
The late Silurian Lau/Kozlowskii bioevent marks a time interval with substantial loss in marine biodiversity linked to the largest positive carbon isotope excursion (Mid-Ludfordian CIE; MLCIE) recorded Phanerozoic (δ13Ccarb peaks at +8–10‰). δ13C and extinctions have been increased productivity (ocean eutrophication), leading organic burial, expansion of anoxia shallow continental seas. To explore this idea, we reconstruct contemporaneous global extent using uranium (U) isotopes from...