Microbiological characterization of post-eruption "snowblower" vents at Axial Seamount, Juan de Fuca Ridge [PDF]
Frontiers in Microbiology, 2013 Microbial processes within the subseafloor can be examined during the ephemeral and uncommonly observed phenomena known as snowblower venting. Snowblowers are characterized by the large quantity of white floc that is expelled from the seafloor following ...
Julie L Meyer +4 more
doaj +6 more sources
Triggering of eruptions at Axial Seamount, Juan de Fuca Ridge. [PDF]
Sci Rep, 2020 AbstractThe submarine volcano Axial Seamount has exhibited an inflation predictable eruption cycle, which allowed for the successful forecast of its 2015 eruption. However, the exact triggering mechanism of its eruptions remains ambiguous. The inflation predictable eruption pattern suggests a magma reservoir pressure threshold at which eruptions occur,
Cabaniss HE +3 more
europepmc +4 more sources
Spotlight 1: Axial Seamount [PDF]
Oceanography, 2010 Axial Seamount is a hotspot volcano superimposed on the Juan de Fuca Ridge (JdFR) in the Northeast Pacific Ocean. Due to its robust magma supply, it rises ~ 800 m above the rest of JdFR and has a large elongate summit caldera with two rift zones that ...
William Chadwick +6 more
doaj +2 more sources
Asymmetric magma plumbing system beneath Axial Seamount based on full waveform inversion of seismic data [PDF]
Nature CommunicationsThe architecture of magma plumbing systems plays a fundamental role in volcano eruption and evolution. However, the precise configuration of crustal magma reservoirs and conduits responsible for supplying eruptions are difficult to explore across most ...
Jidong Yang +8 more
doaj +2 more sources
Petrological variability of recent magmatism at Axial Seamount summit, Juan de Fuca Ridge [PDF]
Geochemistry, Geophysics, Geosystems, 2013 A combined study of mapping, observational, age constraint, and geochemical data at the summit of Axial Seamount, Juan de Fuca Ridge, has revealed its recent petrological history. Multiple basalt types erupted at the summit in a time sequence.
Brian M. Dreyer +2 more
doaj +2 more sources
Metabolic and population profiles of active subseafloor autotrophs in young oceanic crust at deep-sea hydrothermal vents [PDF]
Applied and Environmental MicrobiologyAt deep-sea hydrothermal vents, magmatically driven rock-water reactions in the crust generate gases and other reduced compounds that subseafloor microorganisms use for chemolithoautotrophy.
Sabrina M. Elkassas +13 more
doaj +2 more sources
Quantification of Eruption Dynamics on the North Rift at Axial Seamount, Juan de Fuca Ridge [PDF]
Geochemistry, Geophysics, Geosystems, 2020 Quantifying eruption dynamics in submarine environments is challenging. During the 2015 eruption of Axial Seamount, the formation of hummocky mounds along the north rift was accompanied by tens of thousands of impulsive acoustic signals generated by the ...
M. Le Saout +3 more
doaj +2 more sources
Selection Is a Significant Driver of Gene Gain and Loss in the Pangenome of the Bacterial Genus
mSystems, 2020 Microbial genomes have highly variable gene content, and the evolutionary history of microbial populations is shaped by gene gain and loss mediated by horizontal gene transfer and selection.
Alief Moulana +3 more
doaj +2 more sources
Geologic history of the summit of Axial Seamount, Juan de Fuca Ridge
Geochemistry, Geophysics, Geosystems, 2013 Multibeam (1 m resolution) and side scan data collected from an autonomous underwater vehicle, and lava samples, radiocarbon‐dated sediment cores, and observations of flow contacts collected by remotely operated vehicle were combined to reconstruct the ...
David A. Clague +11 more
doaj +2 more sources
Mid‐Ocean Ridge (MOR) Ash Dispersal on Axial Seamount, Juan de Fuca Ridge
Geochemistry, Geophysics, GeosystemsRare eruption of primitive normal mid‐ocean ridge basalt (N‐MORB) magma (∼9.5 wt% MgO) on the summit of Axial Seamount generated abundant ash that was dispersed for several km.
Ryan A. Portner +5 more
doaj +2 more sources