Results 91 to 100 of about 1,849 (215)
Cores drilled into active smokers on Juan de Fuca Ridge
Eos, Transactions American Geophysical Union, 1992 The October 1991 Chronology expedition to the Endeavour Segment of the Juan de Fuca Ridge sought to exploit shipboard and land‐based radioisotope analyses based on detailed geological observations and comprehensive sampling to determine the absolute ages of an actively venting ridge‐axis hydrothermal field.
Debra Stakes +7 more
openaire +1 more source
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.Abstract Hydrothermal systems at mid‐ocean ridges (MORs) mediate the transfer of heat and geochemical fluxes from the mantle to the hydrosphere, facilitating fluid‐rock interaction and metal cycling. While short‐term hydrothermal dynamics are well studied, the long‐term response of these systems at slow‐spreading ridges to glacial‐interglacial sea ...
Sayantan De +2 more
wiley +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 +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 +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. +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 +4 more
doaj
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 +4 more
doaj +1 more source
, 2006 Larsen, Kim (2006): Tanaidacea (Crustacea; Peracarida) from chemically reduced habitats-the hydrothermal vent system of the Juan de Fuca Ridge, Escabana Trough and Gorda Ridge, northeast Pacific.
Larsen, Kim
core +1 more source
Reproductive ecology of Vestimentifera (Polychaeta: Siboglinidae) from hydrothermal vents and cold seeps [PDF]
, 2005 Giant siboglinid tubeworms (formerly Vestimentifera) are ecologically important members of deep-sea chemosynthetic communities, including hydrothermal vents and cold seeps.
Hilario, A., Hilario, Ana
core
Photogeology and evolution of the Juan de Fuca Ridge [PDF]
Open-File Report, 1983 Grant S. Lichtman +5 more
openaire +1 more source