Results 51 to 60 of about 688 (177)

Tectonic Controls on Volcanism and Associated Hydrothermal Activity in a Sediment‐Dominated Mid‐Ocean Ridge; Escanaba Trough

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract Mid‐ocean ridges, the Earth's most extensive volcanic system, exhibit unique characteristics in sediment‐dominant environments. Thick sediment cover insulates the crust and channels fluid along pathways that can lead to the formation of distinct crustal alteration patterns, exceptionally large mineral deposits, and specialized chemosynthetic ...
Christopher Galley, John Jamieson, Amy Gartman, Isobel Yeo, Masako Tominaga, Maurice Tivey, Carlos Braga, Laura Moore, Sharon L. Walker   +8 more
wiley   +1 more source

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, Clague, David A., Delaney, John R.   +2 more
openaire   +3 more sources

Polychromatic Population of Bioluminescent Organisms in the Deep Pacific Ocean

Journal of Geophysical Research: Oceans, Volume 131, Issue 7, July 2026.
Abstract We present a comprehensive study of deep‐sea bioluminescent organisms in the Cascadia Basin, Northeast Pacific Ocean, based on four years (2020–2023) of in situ measurements using STRings for Absorption length in Water instruments. Analysis of over 1.3 million camera images and continuous photomultiplier tube recordings revealed that ...
Ruohan Li, Christian Spannfellner, Kilian Holzapfel, Sophie Loipolder, Cristina Lagunas Gualda, Michael Böhmer, Matthias Danninger, Fabio C. De Leo, Christian Fruck, Andreas Gärtner, Roman Gernhäuser, Darren Grant, Christian Haack, Felix Henningsen, Hamish Johnson, Claudio Kopper, Carsten B. Krauss, Klaus Leismüller, Stephan A. Meighen‐Berger, Laszlo Papp, Benoît Pirenne, Immacolata Carmen Rea, Elisa Resconi, Lisa Schumacher, Jakub Stacho   +24 more
wiley   +1 more source

Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites

Geophysical Research Letters, 2016
High‐resolution geophysical data have been collected using the Autonomous Underwater Vehicle (AUV) Sentry over the ASHES (Axial Seamount Hydrothermal Emission Study) high‐temperature (~348°C) vent field at Axial Seamount, on the Juan de Fuca Ridge ...
Fabio Caratori Tontini, Timothy J. Crone, Cornel E. J. deRonde, Daniel J. Fornari, James C. Kinsey, Eric Mittelstaedt, Maurice Tivey   +6 more
doaj   +1 more source

The Geologic History of the Chehalis Forearc Basin, Washington State, USA

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The Chehalis basin is located between the Cascade arc and the Coast Range in southwest Washington State. It consists of sedimentary and volcanic rocks deposited throughout the Cenozoic and is underlain by the Siletzia terrane, a thick, large igneous province accreted in the Eocene.
R. L. Moe, J. Bershaw, L. M. Staisch, A. R. Streig   +3 more
wiley   +1 more source

Generation of Channelized Mantle Flow Beyond the Rift Zone Accelerated by Thermal Heterogeneity and Rift Propagation

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Rifting is a tectonic process that leads to extensive magmatic activity, continental breakup, and the formation of new oceanic crust. The interplay between rifting and dynamic mantle flow driven by thermal heterogeneity in the mantle along the rift‐axis can influence magmatism and deformation beyond the rift zone.
Min‐Seok Jang, Byung‐Dal So
wiley   +1 more source

Post Eruption inflation of the East Pacific Rise at 9°50′ N

Geochemistry, Geophysics, Geosystems, 2014
In June 2008, we installed a geodetic network at 9°50′ N on the East Pacific Rise to track the long‐term movement of magma following the 2005/6 eruption. This network consists of 10 concrete benchmarks stretching from the ridge to 9 km off‐axis.
Scott L. Nooner, Spahr C. Webb, W. Roger Buck, Marie‐Helene Cormier   +3 more
doaj   +1 more source

OBS Data Mining Reveals Seismic Structure and Dynamics of the Oceanic Blanco Transform Fault, Northeast Pacific

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Deformation along oceanic transform faults is partitioned between seismic and aseismic slip, controlled by lithology, thermal structure, and fluid circulation. We analyze one year of data from a 54‐station ocean bottom seismometer network deployed across the Blanco Transform Fault (BTF), Northeast Pacific.
Cyril Journeau, Amanda M. Thomas, Rachel E. Abercrombie, Brenton W. Hirao, Mingqi Liu, Václav Kuna   +5 more
wiley   +1 more source

Flux and Isotopic Composition of Sedimentary Carbon Subducting Along the World's Trenches

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Here we provide comprehensive estimates for the subducted sedimentary flux of inorganic and organic carbon and δ13C at 16 trench segments worldwide. Our calculations provide minimum (incoming sediment), maximum (trench fill) and best estimates (underthrust) of carbon fluxes.
Terry Plank, Alberto Malinverno
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