Results 31 to 40 of about 8,420 (233)

The Deep Hot Biosphere [PDF]

Eos, Transactions American Geophysical Union, 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

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

Scientific 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, M. Bergenthal, T. Freudenthal, D. Smith, M. D. Lilley, L. Schnieders, S. Green, G. L. Früh-Green   +7 more
doaj   +1 more source

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

Frontiers 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, Donato Giovannelli, Donato Giovannelli, Donato Giovannelli, Donato Giovannelli, Peter H. Barry, J. Maarten de Moor, J. Maarten de Moor, Gerdhard L. Jessen, Gerdhard L. Jessen, Matthew O. Schrenk, Karen G. Lloyd   +11 more
doaj   +1 more source

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

Nature 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, Stephanie Turner, Linda J. Alakangas, Eva-Lena Tullborg, Thorsten Dittmar, Birgitta E. Kalinowski, Mark Dopson   +6 more
doaj   +1 more source

Subduction hides high-pressure sources of energy that may feed the deep subsurface biosphere

Nature Communications, 2020
Geological sources of H2 and abiotic CH4 have had a critical role in the evolution of life and sustainability of the deep subsurface biosphere, yet the origins of these sources remain largely unconstrained.
A. Vitale Brovarone, D. A. Sverjensky, F. Piccoli, F. Ressico, D. Giovannelli, I. Daniel   +5 more
doaj   +1 more source

The hadal zone is an important and heterogeneous sink of black carbon in the ocean

Communications Earth & Environment, 2022
Black carbon accumulation rates in hadal trenches in the deepest regions of the oceans could be seven-fold higher than the global ocean average, according to geochemical and isotopic analyses of sediments from six trenches in the Pacific Ocean.
Xi Zhang, Yunping Xu, Wenjie Xiao, Meixun Zhao, Zicheng Wang, Xuchen Wang, Liping Xu, Min Luo, Xinxin Li, Jiasong Fang, Yin Fang, Yasong Wang, Kazumasa Oguri, Frank Wenzhöfer, Ashley A. Rowden, Siddhartha Mitra, Ronnie N. Glud   +16 more
doaj   +1 more source

Exploring the Deep Marine Biosphere: Challenges, Innovations, and Opportunities

Frontiers in Earth Science, 2019
The deep marine biosphere is one of the largest, and yet least explored, microbial habitats on the planet. Quantifying the extent, diversity, and activity of subsurface microbial communities is a crucial part of understanding their role in global ...
Anaïs Cario, Anaïs Cario, Gina C. Oliver, Karyn L. Rogers, Karyn L. Rogers   +4 more
doaj   +1 more source

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

Scientific 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, J. de Leeuw, K.-U. Hinrichs, F. Inagaki, J. Kallmeyer   +4 more
doaj   +1 more source

Using Cathodic Poised Potential Experiments to Investigate Extracellular Electron Transport in the Crustal Deep Biosphere of North Pond, Mid-Atlantic Ridge

Frontiers in Environmental Science, 2020
The crustal sub-seafloor covers a large portion of the Earth’s surface but is poorly understood as a habitat for life. It is unclear what metabolisms support the microscopic cells that have been observed, and how they survive under resource limitation ...
Rose M. Jones, Rose M. Jones, Timothy D’Angelo, Beth N. Orcutt   +3 more
doaj   +1 more source

High frequency of phylogenetically diverse reductive dehalogenase-homologous genes in deep subseafloor sedimentary metagenomes

Frontiers in Microbiology, 2014
Marine subsurface sediments on the Pacific margin harbor diverse microbial communities even at depths of several hundreds meters below the seafloor (mbsf) or more.
Mikihiko eKawai, Mikihiko eKawai, Taiki eFutagami, Taiki eFutagami, Atsushi eToyoda, Yoshihiro eTakaki, Shinro eNishi, Sayaka eHori, Wataru eArai, Taishi eTsubouchi, Yuki eMorono, Yuki eMorono, Ikuo eUchiyama, Takehiko eItoh, Asao eFujiyama, Fumio eInagaki, Fumio eInagaki, Hideto eTakami   +17 more
doaj   +1 more source