Results 71 to 80 of about 6,578 (212)

Near-seafloor magnetic mapping of off-axis lava flows near the Kairei and Yokoniwa hydrothermal vent fields in the Central Indian Ridge [PDF]

, 2018
The Kairei (KHF) and Yokoniwa hydrothermal fields (YHF) are hosted in mafic as well as ultramafic rocks distributed at an off-axis volcanic knoll of the Central Indian Ridge.
Kyoko Okino, Masakazu Fujii
core   +2 more sources

Late‐Stage Rift Evolution at Back Arc Basins: Insights From a Tomography Experiment at Orca Volcano, Bransfield Basin

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Back‐arc basins provide insights into the processes governing the evolution of continental rifting to seafloor spreading. The Bransfield basin hosts a back arc rift that is hypothesized to be in the late stages of this transition. Orca volcano is a submarine volcano that lies on the most evolved portion of the rift.
Maleen Kidiwela, William S. D. Wilcock, Dax C. Soule, Javier Almendros   +3 more
wiley   +1 more source

Timing and Style of Tectonic Assembly and Exhumation of the McHugh Complex Within the Chugach‐Kodiak Accretionary Wedge, Alaska

Tectonics, Volume 45, Issue 2, February 2026.
Abstract Accretionary complexes are key archives of subduction zone processes, preserving records of forearc growth, deformation, and tectonic reorganization. The Chugach–Kodiak accretionary complex of southern Alaska records Jurassic to Cretaceous underplating at shallow to intermediate subduction conditions. The McHugh Complex, an imbricated sequence
Ismay Vénice Akker, Whitney M. Behr, Maria Giuditta Fellin, Emily Hinshaw, Luiz Morales, Zoe Braden, Mark Helper, Lonnie J. Hufford, Markus Rast, Lorenzo Tavazzani   +9 more
wiley   +1 more source

Exploring the ecology of deep-sea hydrothermal vents in a metacommunity framework [PDF]

, 2018
© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Frontiers in Marine Science 5 (2018): 49, doi:10.3389/fmars.2018.00049.Species inhabiting deep-sea ...
Beaulieu, Stace E., Bright, Monika, Gollner, Sabine, Grupe, Benjamin, Herrera, Santiago, Kellner, Julie B., Levin, Lisa A., Metaxas, Anna, Mitarai, Satoshi, Mullineaux, Lauren S., Neubert, Michael G., Thurnherr, Andreas M., Tunnicliffe, Verena, Watanabe, Hiromi K., Won, Yong-Jin   +14 more
core   +4 more sources

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, Barclay, Andrew H., Wilcock, William S. D., Purdy, M.   +3 more
openaire   +2 more sources

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

Activity and phylogenetic diversity of sulfate-reducing microorganisms in low-temperature subsurface fluids within the upper oceanic crust

Frontiers in Microbiology, 2015
The basaltic ocean crust is the largest aquifer system on Earth, yet the rates of biological activity in this environment are unknown. Low-temperature (
Alberto eRobador, Sean Patrick Jungbluth, Doug eLaRowe, Robert eBowers, Michael eRappe, Jan eAmend, James eCowen   +6 more
doaj   +1 more source

The Life and Death of a Tectonic Plate: Imaging the Juan de Fuca Plate with Amphibious Seismic Data [PDF]

, 2019
Understanding of Earth’s evolution has been hindered, in part, by the technical challenges associated with placing seismic instruments on the seafloor. As technology improves, more arrays of ocean bottom seismometers are being deployed around the ocean ...
Hawley, William Bythewood
core  

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

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