Edith Kubik

• PhD
• Alexander von Humboldt fellow at University of Bayreuth

The timing and origin of volatile elements accretion on Earth has been and continues to be key questions, despite intense research scrutiny. Two end-member scenarios are usually proposed in which (1) volatile elements were delivered during the main phase of Earth’s accretion and underwent subsequent core–mantle differentiation, or (2) Earth accrete...

Earth's accretion history for volatile elements, and the origin of their depletions with respect to the Sun and primitive meteorites, continue to be debated. Two end‐member scenarios propose either that volatile elements were delivered during the main phases of accretion and differentiation, or that the Earth accreted from materials largely devoid...

The Fe isotopic compositions of mantles of differentiated inner solar system bodies are similar to, or heavier than those of chondritic meteorites. Core–mantle differentiation is a potential contributor to planetary isotopic fractionation. However, previous metal–silicate experiments provide only equivocal evidence for such fractionation, and have...

Iron isotopes are fractionated by multiple biological processes, which offers a novel opportunity to study iron homeostasis. The determination of Fe isotope composition of biological samples necessitates certified biological reference materials of known Fe isotopic signature in order to properly assess external reproducibility and data quality betw...

In comparison with the Sun and CI chondrites, moderately volatile elements (MVEs) are depleted in terrestrial planets and other small, rocky differentiated bodies in the inner solar system. The abundances of most MVEs in the bulk silicate Earth (BSE) fall on a trend that defines a near log-linear decrease with their 50% nebular condensation tempera...

FeNi metals represent an important fraction of chondritic components that remains relatively unexplored within most carbonaceous chondrite groups. The compositions of these metals can place constraints on the nature of their precursor materials as well as the physicochemical conditions of chondrule formation. In this study, we have analyzed the maj...

The development of collision-cell multi-collection inductively-coupled-plasma mass-spectrometers has revolutionized K isotope geochemistry, improving the sensitivity by over a factor 10 compared to older generation instruments. The application of isotope geochemistry...

L’accrétion des éléments volatils sur Terre continue d’être débattue malgré de nombreux travaux de recherche sur le sujet. Les observables géochimiques et cosmochimiques ont été expliquées par une large gamme de scénarios allant de (1) l’accrétion des éléments volatils durant les phases principales de l’accrétion ter- restre, jusqu’à (2) l’accrétio...

Identifying extant materials that act as compositional proxies for Earth is key to understanding its accretion. Copper and sulfur are both moderately volatile elements; however, they display different geochemical behavior (e.g., phase affinities). Thus, individually and together, these elements provide constraints on the source material and conditi...