You are invited to an upcoming Geoscience seminar to take place in the Geoscience Auditorium on Mar 26 @ 15:00. The seminar will be given by Wolfgang Ruebsam, a geochemist from Kiel University. Below is the title, abstract and brief bio. There will be cake and coffee.

Abstract: 

The Early Jurassic T-OAE represents a major Mesozoic environmental perturbation characterized by the widespread deposition of organic-carbon-rich sediments in oxygen-deficient shelf and epicontinental seas. This event was associated with rising global temperatures, major changes in biogeochemical cycles, and a eustatic sea-level rise, which together had profound impacts on both marine and terrestrial ecosystems. The talk will present molecular and isotope-geochemical datasets that provide insights into spatial and temporal changes in marine depositional environments during the event. By integrating biomarker and stable-isotope records from marine sedimentary archives, the presentation will highlight how oceanographic conditions, redox dynamics, and biogeochemical cycles evolved across different depositional settings during this interval of global environmental change. These data offer a window into the processes that governed organic-matter accumulation, oxygen depletion, and ecosystem responses in Early Jurassic oceans.

Bio:

Wolfgang Ruebsam is an organic and isotope geochemist and researcher (assistant professor) at Kiel University, where he also serves as laboratory manager of the Organic and Isotope Geochemistry Laboratory. He received his Diploma in Geology and Paleontology from the University of Cologne and completed both his PhD and Habilitation at Kiel University. His research applies state-of-the-art techniques in organic and isotope geochemistry to improve our understanding of the complex interactions between the geosphere and biosphere throughout the Phanerozoic. In particular, his work aims not only to document past environmental change but also to identify its underlying drivers and assess its impacts on biogeochemical cycles and ecosystem evolution. He is also engaged in the development of new molecular geochemical proxies to better understand organic matter preservation and molecular taphonomy.