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The Hidden Biogeosphere – Metabolic Biodiversity and Rate-Limiting Steps in the Deep Subsurface Continental Biosphere
AGU 2024
biogeosciences | 13 december 2024
Barbara Sherwood Lollar
Terrestrial analogs in the deep ancient groundwaters of the Earths continental crust revealed a subsurface biosphere that includes low biomass, low bi...
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Small Organic Compounds in Earth’s Deep Fracture Waters: Contributions of Radiolysis and Other Processes
AGU 2024
biogeosciences | 13 december 2024
Min Song, Jonas Brünjes, Verena B. Heuer, Jenny We...
Understanding the formation mechanisms for organic molecules in the absence of life (i.e., abiotic processes) has significant implications for prebiot...
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Molecular Composition of Organic Matter in 2.7-Billion-Year-Old Rocks and Fracture Water from the Deep Continental Subsurface
AGU 2024
biogeosciences | 13 december 2024
Jonas Brünjes, Min Song, Michael Seidel, Benedicte...
Water and organic molecules are considered prerequisites for habitability and the origin of life. The deep continental subsurface provides conditions ...
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Clumped Isotope Signatures of Abiotic Methane: The Role of the Combinatorial Isotope Effect
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
17 july 2024
Jabrane Labidi, Thomas McCollom, Thomas Giunta, Ba...
Methane clumped isotope signatures of abiogenesis may be diagnostic of the origin of methane on Earth and other planetary bodies. We performed synt...
Quantifying Uncertainty in Sustainable Biomass and Production of Biotic Carbon in Enceladus' Notional Methanogenic Biosphere
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
21 march 2024
Peter M. Higgins, Weibin Chen, Christopher Glein, ...
Beneath Enceladus' ice crust lies an ocean which might host habitable conditions. Here, the scale and productivity of a notional Enceladean methano...
Uncertainty in Habitability and Sustainable Biomass for a Hypothetical Methanogenic Biosphere on Enceladus
ENCELADUS: FROM INNER WORKINGS TO THE POTENTIAL FOR LIFE IV ORAL
planetary sciences | 15 december 2023
Peter M. Higgins, Weibin Chen, Christopher R. Glei...
Beneath Enceladus icy shell lies a water ocean which might host habitable conditions. However, quantitatively assessing its habitability, potential bi...
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The Expanse of Habitability: Earth Analog Discoveries Drive New Conceptual Models of How to Build a Habitable Planet
CARL SAGAN LECTURE
planetary sciences | 11 december 2023
Barbara Sherwood Lollar
Humanity continues to dream of life beyond Earth. In popular culture, the encounters with alien planets and lifeforms are what open our eyes to life t...
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Mineral/Carbon Coevolution: A Driver Of Hydrothermal Carbon Fluxes Through Time And Space?
CHAPMAN CONFERENCE ON HYDROTHERMAL CIRCULATION AND SEAWATER CHEMISTRY
general program | 19 may 2023
Benedicte Menez, Muriel Andreani, Baptiste Debret,...
Hydrothermal carbon fluxes through space and time are strongly dependent on its speciation and are thus intimately linked to the abiotic production of...
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