Results 41 to 50 of about 2,972,410 (343)

Sampling across large-scale geological gradients to study geosphere–biosphere interactions

open access: yesFrontiers in Microbiology, 2022
Despite being one of the largest microbial ecosystems on Earth, many basic open questions remain about how life exists and thrives in the deep subsurface biosphere.
Donato Giovannelli   +11 more
doaj   +1 more source

Contamination tracer testing with seabed drills: IODP Expedition 357 [PDF]

open access: yesScientific Drilling, 2017
IODP Expedition 357 utilized seabed drills for the first time in the history of the ocean drilling program, with the aim of collecting intact sequences of shallow mantle core from the Atlantis Massif to examine serpentinization processes and the deep ...
B. N. Orcutt   +7 more
doaj   +1 more source

Terrigenous dissolved organic matter persists in the energy-limited deep groundwaters of the Fennoscandian Shield

open access: yesNature Communications, 2022
Dissolved organic matter in the Fennoscandian Shield deep continental bedrock fracture waters of varying characteristics and ages carries a strong terrigenous signature, and only a small proportion of this potential energy source links to the deep ...
Helena Osterholz   +6 more
doaj   +1 more source

Deep subsurface microbiology : a guide to the research topic papers [PDF]

open access: yes, 2013
© The Author(s), 2013. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Frontiers in Microbiology 4 (2013): 122, doi:10.3389/fmicb.2013.00122.Deep subsurface microbiology is ...
Biddle, Jennifer F.   +3 more
core   +2 more sources

The lifetime of excess atmospheric carbon dioxide [PDF]

open access: yes, 1994
We explore the effects of a changing terrestrial biosphere on the atmospheric residence time of CO2 using three simple ocean carbon cycle models and a model of global terrestrial carbon cycling.
Braswell, Rob, Moore, B
core   +2 more sources

Tracking the Deep Biosphere through Time

open access: yesGeosciences, 2020
The oceanic and continental lithosphere constitutes Earth’s largest microbial habitat, yet it is scarcely investigated and not well understood. The physical and chemical properties here are distinctly different from the overlaying soils and the ...
Henrik Drake   +2 more
doaj   +1 more source

The deep hot biosphere [PDF]

open access: yesChoice Reviews Online, 1999
The first inhabitants of planet Earth were single‐celled microorganisms and they are still with us today. Their name is truly legion, for they live everywhere, from boiling hot springs at the Earth's surface and on the seafloor to the coldest waters of the oceans and the Antarctic lakes.
  +4 more sources

Modeling pN2 through Geological Time: Implications for Planetary Climates and Atmospheric Biosignatures [PDF]

open access: yes, 2016
Nitrogen is a major nutrient for all life on Earth and could plausibly play a similar role in extraterrestrial biospheres. The major reservoir of nitrogen at Earth's surface is atmospheric N2, but recent studies have proposed that the size of this ...
Buick, R.   +5 more
core   +2 more sources

Advancing subsurface biosphere and paleoclimate research: ECORD–ICDP–DCO–J-DESC–MagellanPlus Workshop Series Program Report [PDF]

open access: yesScientific Drilling, 2015
The proper pre-drilling preparation, on-site acquisition and post-drilling preservation of high-quality subsurface samples are crucial to ensure significant progress in the scientifically and societally important areas of subsurface biosphere and ...
H. J. Mills   +4 more
doaj   +1 more source

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