Results 81 to 90 of about 1,849 (215)

Magmatic effects of the Cobb hot spot on the Juan de Fuca Ridge [PDF]

Journal of Geophysical Research: Solid Earth, 2005
The interaction of the Juan de Fuca Ridge with the Cobb hot spot has had a considerable influence on the magmatism of the Axial Segment of the ridge, the second‐order segment that overlies the hot spot. In addition to the construction of the large volcanic edifice of Axial Seamount, the Axial Segment has shallow bathymetry and a prevalence of ...
John Chadwick, Michael Perfit, Ian Ridley, Ian Jonasson, George Kamenov, William Chadwick, Robert Embley, Petrus le Roux, Matthew Smith   +8 more
openaire   +1 more source

Heat and Tectonics of the Canadian Cordillera From the Seismically Constrained Inversion of Gravity Data

Tectonics, Volume 45, Issue 2, February 2026.
Abstract An updated approach to seismically constrained modeling of gravity data reveals two broad, NW‐trending low‐density zones in the mantle lithosphere beneath the Canadian Cordillera. The low‐density zones coincide with a shallow lithosphere‐asthenosphere boundary (LAB), a shallow Curie‐point depth, and the location of Quaternary volcanoes.
Nathan Hayward, Tark S. Hamilton
wiley   +1 more source

The draft genome of the hyperthermophilic archaeon Pyrodictium delaneyi strain hulk, an iron and nitrate reducer, reveals the capacity for sulfate reduction

Standards in Genomic Sciences, 2017
Pyrodictium delaneyi strain Hulk is a newly sequenced strain isolated from chimney samples collected from the Hulk sulfide mound on the main Endeavour Segment of the Juan de Fuca Ridge (47.9501 latitude, −129.0970 longitude, depth 2200 m) in the ...
Lucas M. Demey, Caitlin R. Miller, Michael P Manzella, Rachel R. Spurbeck, Sukhinder K. Sandhu, Gemma Reguera, Kazem Kashefi   +6 more
doaj   +1 more source

Effects of Aging on Magnetic Mineralogy of Natural Volcanic Glass: Implications for Geomagnetic Paleointensity Recorders

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Natural volcanic glasses are well represented in the geologic record, and typically contain near‐ideal single‐domain particles required for standard Thellier‐type absolute paleointensity experiments. Young (<∼50–100 ka) glasses have been demonstrated to reliably record Earth's magnetic field.
Julie A. Bowles, Fatimah Abdulghafur, Sebastian Fearn, Vera Soltes   +3 more
wiley   +1 more source

(Table 1) Geochemical parameters of analyzed samples from from Peru Margin, Equatorial Pacific, Hydrate Ridge, and Juan de Fuca Ridge

, 2009
(Table 1) Geochemical parameters of analyzed samples from from Peru Margin, Equatorial Pacific, Hydrate Ridge, and Juan de Fuca ...
Kai-Uwe Hinrichs (6960101), Hinrichs, Kai-Uwe, Lipp, Julius S, Julius S Lipp (6977507)   +3 more
core   +1 more source

Distribution of hydrothermal manganese over the Juan De Fuca Ridge

Geophysical Research Letters, 1981
Bottom waters from five hydrographic stations, spaced equally along a 400‐km section of the Juan de Fuca Ridge north of the Blanco Fracture Zone, contain anomalously high concentrations of total dissolvable manganese (TDM). The two bottom‐most bottles from each hydrocast (∼ 100 to 200 m above bottom) range from 8.3 to 108.9 nmol kg−1 with a median ...
C. J. Jones, H. P. Johnson, J. R. Delaney   +2 more
openaire   +1 more source

(Table 3) Composition of oxidative phases (stages 1-2) of altered rocks with increasing distance across the eastern flank of the Juan de Fuca Ridge, ODP Leg 168 data

, 1999
(Table 3) Composition of oxidative phases (stages 1-2) of altered rocks with increasing distance across the eastern flank of the Juan de Fuca Ridge, ODP Leg 168 ...
A G Hunter (6980318), P Greenwood (6980321), Kempton, Pamela D, Hunter, A G, Greenwood, P, Pamela D Kempton (6961055)   +5 more
core   +1 more source

Aligned hydrothermal fluid‐flow pathways in Middle Permian near‐shore marine sediments beneath a basaltic lava flow

Sedimentology, Volume 73, Issue 1, Page 83-102, January 2026.
ABSTRACT Tubular and curviplanar structures, outlined by the occurrence of haematite/goethite, chlorite, quartz and albite, are developed in the Middle Permian Broughton Formation in the southern Sydney Basin, New South Wales, Australia. These structures are interpreted as fluid‐flow pathways resulting from the ejection of heated pore fluids as a thick
Paul F. Carr, Brian G. Jones, G. R. Shi, Sangmin Lee, Mark A. Peterson, Karen E. Alley   +5 more
wiley   +1 more source

Hydrography and flow in the rift valley of the Mid-Atlantic Ridge

, 2000
Slow-spreading mid-ocean ridges such as the Mid-Atlantic Ridge are characterized by deep axial rift valleys which are isolated from the water on the ridge flanks.
Thurnherr, Andreas M., Thurnherr, A.M.
core  

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