The rock-hosted biosphere
Our understanding of Earth's rock-hosted subsurface biosphere has advanced over the past
two decades through the collection and analysis of fluids and rocks from aquifers within the …
two decades through the collection and analysis of fluids and rocks from aquifers within the …
Paleo-rock-hosted life on Earth and the search on Mars: a review and strategy for exploration
Here we review published studies on the abundance and diversity of terrestrial rock-hosted
life, the environments it inhabits, the evolution of its metabolisms, and its fossil biomarkers to …
life, the environments it inhabits, the evolution of its metabolisms, and its fossil biomarkers to …
An oligotrophic deep-subsurface community dependent on syntrophy is dominated by sulfur-driven autotrophic denitrifiers
Subsurface lithoautotrophic microbial ecosystems (SLiMEs) under oligotrophic conditions
are typically supported by H2. Methanogens and sulfate reducers, and the respective energy …
are typically supported by H2. Methanogens and sulfate reducers, and the respective energy …
A productivity collapse to end Earth's Great Oxidation
It has been hypothesized that the overall size of—or efficiency of carbon export from—the
biosphere decreased at the end of the Great Oxidation Event (GOE)(ca. 2,400 to 2,050 Ma) …
biosphere decreased at the end of the Great Oxidation Event (GOE)(ca. 2,400 to 2,050 Ma) …
A window into the abiotic carbon cycle–Acetate and formate in fracture waters in 2.7 billion year-old host rocks of the Canadian Shield
The recent expansion of studies at hydrothermal submarine vents from investigation of
abiotic methane formation to include abiotic production of organics such acetate and …
abiotic methane formation to include abiotic production of organics such acetate and …
Mars extant life: What's next? Conference report
BL Carrier, DW Beaty, MA Meyer, JG Blank, L Chou… - 2020 - liebertpub.com
On November 5–8, 2019, the “Mars Extant Life: What's Next?” conference was convened in
Carlsbad, New Mexico. The conference gathered a community of actively publishing experts …
Carlsbad, New Mexico. The conference gathered a community of actively publishing experts …
Oxidation processes diversify the metabolic menu on Enceladus
The Cassini mission to the Saturn system discovered a plume of ice grains and water vapor
erupting from cracks on the icy surface of the satellite Enceladus. This moon has a global …
erupting from cracks on the icy surface of the satellite Enceladus. This moon has a global …
86Kr excess and other noble gases identify a billion-year-old radiogenically-enriched groundwater system
Deep within the Precambrian basement rocks of the Earth, groundwaters can sustain
subsurface microbial communities, and are targets of investigation both for geologic storage …
subsurface microbial communities, and are targets of investigation both for geologic storage …
'Follow the water': hydrogeochemical constraints on microbial investigations 2.4 km below surface at the Kidd Creek deep fluid and deep life observatory
Microbiological and geochemical data are presented to characterize the hydrogeochemistry
and to investigate extant microbial life in fracture waters 2.4 km below surface, at the Kidd …
and to investigate extant microbial life in fracture waters 2.4 km below surface, at the Kidd …
Methane on Mars and habitability: challenges and responses
Recent measurements of methane (CH4) by the Mars Science Laboratory (MSL) now
confront us with robust data that demand interpretation. Thus far, the MSL data have …
confront us with robust data that demand interpretation. Thus far, the MSL data have …