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Introduction
. Caroline does research in biology and Geochemistry.
Additional affiliations
September 2011 - December 2014
Publications
Publications (14)
Carbon and oxygen stable isotope compositions of carbonates are widely used to retrieve paleoenvironmental information. However, bias may exist in such reconstructions as carbonate precipitation is often associated with biological activity. Several skeleton-forming eukaryotes have been shown to precipitate carbonates with significant offsets from i...
Extensive bryozoan fossil records date back to the early Ordovician, forming an important part of sedimentary archives, yet the applicability of classical 18-oxygen thermometry to bryozoan carbonate is still a matter of debate, with mineralogical and biological issues still hindering paleoclimate reconstructions. Complementing other methods (i.e.,...
Marine sediments can be used to reconstruct the evolution of seawater [SO42-] and δ34S over time, two key parameters that contribute to refine our understanding of the sulfur cycle and thus of Earth's redox state. δ34S evolution can be measured from carbonates, barites and sulfate evaporites. [SO42-] variations can be reconstructed using fluid incl...
Marine sediments can be used to reconstruct the evolution of seawater [SO42-] and δ34S over time, two key parameters that contribute to refine our understanding of the sulfur cycle and thus of Earth’s redox state. δ34S evolution can be measured from carbonates, barites and sulfate evaporites. [SO42-] variations can be reconstructed using fluid incl...
The boron isotopic ratio (δ11B) of marine biogenic carbonates is a proxy for ocean pH through the geological times, provided that δ11B measurements reach precisions better than 0.8‰ (2 SD), corresponding to 0.1 pH-unit (magnitude of the Anthropocene ocean acidification). This level of precision is however challenging to achieve for samples with a s...
Pre-final edits/Accepted Manuscript
The Devonian Appalachian Basin of western New York contains alternating successions of gray and black shale, many of which mark the onset of marine crisis events. The causes for alternating gray and black shale deposits have long been debated within the basin and the traditional assumption that anoxia played a ro...
Paleoenvironmental reconstructions, which are mainly retrieved from oxygen isotope (δ18O) and clumped isotope (Δ47) compositions of carbonate minerals, are compromised when carbonate precipitation occurs in isotopic disequilibrium. To date, knowledge of these common isotopic disequilibria, known as vital effects in biogenic carbonates, remains limi...
Abstract. Paleoenvironmental reconstructions, which are mainly retrieved from oxygen isotope (δ<sup>18</sup>O) and clumped isotope (Δ<sub>47</sub>) compositions of carbonate minerals, are compromised when carbonate crystallization occurs in isotopic disequilibrium. To date, knowledge of these common isotopic disequilibria, known as vital effects in...
Ureolytic bacteria have been proposed as model organisms to investigate the potential of subsurface microorganisms to enhance carbon capture and storage through solubility- and mineral-trapping of CO2 induced by bacterial ureolysis and carbonate formation. Ideally, CO2 incorporation into carbonates can be readily traced using carbon isotope measure...
Stable carbon isotopic fractionation during calcium carbonate precipitation induced by urease‐catalysed hydrolysis of urea was experimentally investigated in artificial water at a constant temperature of 30 °C. Carbon isotope fractionation during urea hydrolysis follows a Rayleigh distillation trend characterized by a 13C‐enrichment factor of − 20...
