Oceanic upper crustal accretion by melt sill and lava flow interaction at Axial volcano [PDF]
Nature CommunicationsMagmatically-accreted upper crust along mid-ocean ridges is traditionally considered to consist of lava flows overlying a sheeted-dyke complex. However, how the upper crust is formed at hotspot-influenced ridge segments remains unknown.
Han Wu +6 more
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Seismic anisotropy of the shallow crust at the Juan de Fuca Ridge [PDF]
Geophysical Research Letters, 2000 Microearthquake data recorded on four ocean bottom seismometers are used to study shear‐wave splitting on the Endeavour Segment of the Juan de Fuca Ridge. The covariance matrix decomposition method is used to determine the sensor orientation from explosive shot data and to estimate the anisotropy parameters for 238 earthquake records.
Almendros González, Francisco Javier +3 more
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Genomics discovery of giant fungal viruses from subsurface oceanic crustal fluids [PDF]
ISME Communications, 2023 The oceanic igneous crust is a vast reservoir for microbial life, dominated by diverse and active bacteria, archaea, and fungi. Archaeal and bacterial viruses were previously detected in oceanic crustal fluids at the Juan de Fuca Ridge (JdFR).
Ananda S. Bhattacharjee +4 more
doaj +2 more sources
Phylogenetic diversity of microorganisms in subseafloor crustal fluids from boreholes 1025C and 1026B along the Juan de Fuca Ridge flank [PDF]
Frontiers in Microbiology, 2014 To expand investigations into the phylogenetic diversity of microorganisms inhabiting the subseafloor biosphere, basalt-hosted crustal fluids were sampled from Circulation Obviation Retrofit Kits affixed to Holes 1025C and 1026B along the Juan de Fuca ...
Sean eJungbluth +5 more
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Axial seamount: An active ridge axis volcano on the Central Juan De Fuca Ridge [PDF]
Journal of Geophysical Research: Solid Earth, 1990 Axial Seamount (some of the manuscripts in this special section refer to the edifice with the more precise name of “Axial Volcano”), a large ridge axis volcano, is located on the central segment of the Juan de Fuca Ridge approximately 250 nautical miles west of the Washington/Oregon/British Columbia coast. Currently both volcanically and hydrothermally
Johnson, H. Paul, Embley, Robert W.
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Sr isotopic variations along the Juan de Fuca Ridge
Journal of Geophysical Research: Solid Earth, 1984 Sr isotopic ratios of 39 glass and microcrystalline basalt samples along the Juan de Fuca Ridge and 1 glass sample from Brown Bear Seamount are at the lower end of the range for normal mid‐oceanic ridge basalt (MORB); the average 87Sr/86Sr ratio is 0.70249±0.00014 (2‐σ). Although subtle variations exist along strike of the ridge, the Sr isotope data do
Eaby, Jacqueline +2 more
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Endeavour Segment of the Juan de Fuca Ridge: One of the Most Remarkable Places on Earth [PDF]
Oceanography, 2012 Endeavour Segment of the Juan de Fuca Ridge is one of three Integrated Study Sites for the Ridge 2000 Program. It is a remarkable, dynamic environment hosting five major hydrothermal fields, numerous smaller fields, and myriad diffuse-flow sites; magma ...
Deborah S. Kelley +14 more
doaj +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.
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Geochemistry, Geophysics, GeosystemsThree voluminous inflated lobate lava flow complexes on the distal rifts of Axial Seamount are much larger than other known flows in the global spreading system.
Jennifer B. Paduan +5 more
doaj +2 more sources
Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links
Geophysical Monograph Series, Page 191-228., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman +2 more
wiley +1 more source