Anna Neubeck

Time-Variable Loading Efficiency Reveals Gas Accumulation in Sealed Piezometers

Jonas Sundell, Ayman A. Abed, Anna Neubeck, Ezra Haaf

Key Points• Loading efficiency can vary through time and strongly affect long term pore pressure records • Gas accumulation reduces loading efficiency while increasing measured pore water pressure • A new framework identifies gas affected records and estimates gas saturation from monitoring …

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Self-organized pattern formation in geological soft matter

Julyan H. E. Cartwright, Charles S. Cockell, Lucas Goehring, Silvia Holler et autres

Geological materials are often seen as the antithesis of soft; rocks are hard. However, during the formation of minerals and rocks, all the systems we shall discuss, indeed geological materials in general, pass through a stage where they are soft. This occurs …

Thermoaminiphila catenidiffluenda gen. nov., sp. nov.: A novel thermophilic, strictly anaerobic bacterium representing Thermoaminiphilia class nov., a newly described class thriving in hydrocarbon-rich habitats and biogas fermenters

Eva Maria Prem, Mathias Wunderer, Andja Mullaymeri, Julia Zöhrer et autres

Abstract Axenic cultivation of novel bacterial lineages, referred to as “gold standard in microbiology”, remains challenging for fastidious or uncultured taxa due the challenges of replicating adequate growth conditions. We isolated strain PM69, a representative of the previously undescribed Bacillota class SHA-98, …

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Nickel Isotope Systematics in the Talvivaara Paleoproterozoic Black Shale Deposit Reveal Mineralogy-Controlled Fractionation with a Preserved Biogenic Signal

Anna Neubeck, Kirsti Loukola-Ruskeeniemi, Vyllinniskii Cameron, Delia Rösel et autres

Nickel isotope systematics in sediment-hosted sulfide deposits are now more commonly used to infer redox and diagenetic processes, yet their potential to record biological signals and their preservation through diagenesis and metamorphism remains poorly constrained. Here we present micro-scale coupled δ60Ni, δ34S, …

Contribution of dissolved organic carbon to total alkalinity in Enhanced Weathering experiments

Lukas Rieder, Mathilde Hagens, Reinaldy P. Poetra, Alix Vidal et autres

Total Alkalinity (TA) is widely used as a proxy for captured CO 2 in enhanced weathering (EW) applications. However, organic anions can also contribute to TA. To improve carbon accounting in EW, which is often simplified to that TA equals carbonate alkalinity, …

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Self-assembled versus biological pattern formation in geology

Julyan H. E. Cartwright, Charles S. Cockell, Julie Cosmidis, Silvia Holler et autres

Both abiotic self-organization and biological mechanisms have been put forward as the origin of a number of geological patterns. It is important to comprehend the formation mechanisms of such structures both to understand geological self-organization and in order to differentiate them from …

Self-assembled versus biological pattern formation in geology

Julyan H. E. Cartwright, Charles S. Cockell, Julie Cosmidis, Silvia Holler et autres

Both abiotic self-organization and biological mechanisms have been put forward as the origin of a number of geological patterns. It is important to comprehend the formation mechanisms of such structures both to understand geological self-organization and in order to differentiate them from …

Nickel: Geochemistry, biochemistry and its role in chemical and biological evolutions

Anna Neubeck, Andreas Kirschning

Nickel is a versatile element that plays critical roles in Earth's geological and biological evolution, from the depths of the magmatic mantle to the complexity of prebiotic chemistry. While it is not considered the sole catalyst for the origin of life, recent …

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Alive and dead earthworms capture carbon during mineral weathering through different pathways

Tullia Calogiuri, Mathilde Hagens, Jan Willem van Groenigen, Florian Wichern et autres

Both living and dead earthworms stabilize organic carbon, with the latter also enhancing inorganic carbon sequestration, through castings and microbial-driven activities, respectively, via rock weathering in a 120-day column experiment.

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Alkalinity production and carbon capture from dunite weathering: Individual effects of oxalate, citrate, and EDTA salts

Harun Niron, Tullia Calogiuri, Abhijeet Singh, Anna Neubeck et autres

• Ligand-driven citrate effects stimulate dunite weathering to capture carbon. • Citrate likely prevents formation of Si- and Fe- based passivation layers. • Oxalate’s ligand-based effect on dunite weathering was not significant. • EDTA requires to be completely charge balanced for positive …

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Machine learning-based identification of key biotic and abiotic drivers of mineral weathering rate in a complex enhanced weathering experiment

Iris Janssens, Thomas Servotte, Tullia Calogiuri, Steven Mortier et autres

Background The optimization of enhanced mineral weathering as a carbon dioxide removal technology requires a comprehensive understanding of what drives mineral weathering. These drivers can be abiotic and biotic and can interact with each other. Therefore, in this study, an extensive 8-week …

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Machine learning-based identification of key biotic and abiotic drivers of mineral weathering rate in a complex enhanced weathering experiment

Iris Janssens, Thomas Servotte, Tullia Calogiuri, Steven Mortier et autres

Background: The optimization of enhanced mineral weathering as a carbon dioxide removal technology requires a comprehensive understanding of what drives mineral weathering. These drivers can be abiotic and biotic and can interact with each other. Therefore, in this study, an extensive 8-week …

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