Results 71 to 80 of about 688 (177)

Biogeography and evolution of Thermococcus isolates from hydrothermal vent systems of the Pacific

Frontiers in Microbiology, 2015
Thermococcus is a genus of hyperthermophilic archaea that is ubiquitous in marine hydrothermal environments growing in anaerobic subsurface habitats but able to survive in cold oxygenated seawater.
Mark Thomas Price, Heather eFullerton, Craig Lee Moyer   +2 more
doaj   +1 more source

Gabbroic xenoliths and host ferrobasalt from the southern Juan de Fuca Ridge

Journal of Geophysical Research: Solid Earth, 1986
Rare isotropic gabbroic xenoliths occur in sheet and lobate flow fragments of nearly aphyric ferrobasalt collected along a 12‐km section of the southern Juan de Fuca Ridge. Xenoliths comprise ≪ 1% of the dredge contents and range in size from 1 cm3 (glomerocryst) to 240 cm3.
Dixon, Jacqueline Eaby, Clague, David A., Eissen, Jean‐Philippe   +2 more
openaire   +4 more sources

Carbon fixation by basalt-hosted microbial communities

Frontiers in Microbiology, 2015
Oceanic crust is a massive potential habitat for microbial life on Earth, yet our understanding of this ecosystem is limited due to difficulty in access. In particular, measurements of rates of microbial activity are sparse. We used stable carbon isotope
Beth N Orcutt, Jason B Sylvan, Daniel eRogers, Daniel eRogers, Jennifer eDelaney, Raymond W Lee, Peter R Girguis   +6 more
doaj   +1 more source

Seafloor Electromagnetic Measurements above Axial Seamount, Juan de Fuca Ridge

Journal of geomagnetism and geoelectricity, 1997
Magnetotelluric (MT) data were collected at three sites around the eastern rim of the caldera of Axial Seamount, on the Juan de Fuca Ridge. The seamount has been observed to be volcanically and hydrothermally active over the last ten years, and is therefore an excellent target for electromagnetic induction studies on the seafloor. This paper follows an
Constable, S. C., Heinson, G. S., Anderson, G., White, A.   +3 more
openaire   +2 more sources

Low-Temperature Hydrothermal Plumes in the Near-Bottom Boundary Layer at Endeavour Segment, Juan de Fuca Ridge [PDF]

Oceanography, 2012
Low-temperature (typically 5–75°C) fluid, commonly referred to as "diffuse" hydrothermal flow, emanates from fractures over a significant portion of the Juan de Fuca Ridge seafloor in the Northeast Pacific Ocean (Kelley et al., 2012, in this issue ...
Susan Hautala, H. Paul Johnson, Matthew Pruis, Irene García-Berdeal, Tor Bjorklund   +4 more
doaj  

Photogeology and evolution of the Juan de Fuca Ridge [PDF]

Open-File Report, 1983
Grant S. Lichtman, W.R. Normark, J.R. Delaney, J.L. Morton, H. Paul Johnson, J.L. Karsten   +5 more
openaire   +1 more source

Beyond the ocean frontier: the Juan de Fuca Ridge

, 1986
Two thousand metres below the surface of the Pacific Ocean off Canada's west coast is an underwater mountain range called the Juan de Fuca Ridge. Its steaming vents spew forth an abundance of molten minerals, supporting a unique ecosystem denied the privileges of light.
openaire   +1 more source

Anaerobic oxidation of short-chain alkanes in hydrothermal sediments: potential influences on sulfur cycling and microbial diversity

Frontiers in Microbiology, 2013
Short-chain alkanes play a substantial role in carbon and sulfur cycling at hydrocarbon-rich environments globally, yet few studies have examined the metabolism of ethane (C2), propane (C3), and butane (C4) in anoxic sediments in contrast to methane (C1).
Melissa M Adams, Adrienne L Hoarfrost, Arpita eBose, Samantha B Joye, Peter R Girguis   +4 more
doaj   +1 more source

Co-registered Geochemistry and Metatranscriptomics Reveal Unexpected Distributions of Microbial Activity within a Hydrothermal Vent Field

Frontiers in Microbiology, 2017
Despite years of research into microbial activity at diffuse flow hydrothermal vents, the extent of microbial niche diversity in these settings is not known. To better understand the relationship between microbial activity and the associated physical and
Heather C. Olins, Daniel R. Rogers, Christina Preston, William Ussler, Douglas Pargett, Scott Jensen, Brent Roman, James M. Birch, Christopher A. Scholin, M. Fauzi Haroon, Peter R. Girguis   +10 more
doaj   +1 more source

Marine Magnetic Anomalies Enhanced by Internal Stress in Rapidly Cooled Submarine Basalts

Geophysical Research Letters
Marine magnetic anomalies are pivotal to our understanding of plate tectonics, geomagnetic fields, and deep Earth dynamics. However, the question of how Ti‐rich titanomagnetites, the primary remanence carriers in oceanic crust rocks, can faithfully ...
Fei Han, Huapei Wang, Yiliang Lv, Greig A. Paterson, Andrew J. Biggin, Wyn Williams, Tao Yang, Junxiang Miao, Ting Cao, Duowen Zhu, Chen Wen, Shaochen Hu, Xiaowei Chen, Mengqing Wang, Yiming Ma, Jiakun Fang, Jiabo Liu   +16 more
doaj   +1 more source