Results 41 to 50 of about 924,508 (327)

Long‐Lasting Evolution of Layer 2A in the Western South Atlantic: Evidence for Low‐Temperature Hydrothermal Circulation in Old Oceanic Crust

Journal of Geophysical Research: Solid Earth, 2019
Previous seismic studies suggest that hydrothermal processes are active only within young oceanic crust (
D. Kardell, G. Christeson, J. Estep, R. Reece, R. Carlson   +4 more
semanticscholar   +1 more source

When do we need pan-global freeze to explain ^(18)O-depleted zircons and rocks? [PDF]

, 2011
Rocks with δ^(18)O values of less than 5‰ SMOW (Standard Mean Ocean Water) contain oxygen derived from ∼0‰ seawater or meteoric (rain or melted snow,
Bindeman, Ilya
core   +1 more source

Development of geothermal field following the 2000 eruption of Usu volcano as revealed by ground temperature, resistivity and self-potential variations

Annals of Geophysics, 2007
The 2000 eruption of Usu volcano, NE Japan, took place on the foot of the somma, and formed a cryptodome of 65 m high accompanying numerous faults.
T. Mogi, N. Matsushima, S. Takakura, Y. Nishida, M. Saba   +4 more
doaj   +1 more source

Hydrothermal Activity at a Cretaceous Seamount, Canary Archipelago, Caused by Rejuvenated Volcanism

Frontiers in Marine Science, 2020
Our knowledge of venting at intraplate seamounts is limited. Almost nothing is known about past hydrothermal activity at seamounts, because indicators are soon blanketed by sediment.
Andreas Klügel, Heinrich Villinger, Miriam Römer, Miriam Römer, Norbert Kaul, Sebastian Krastel, Kai-Frederik Lenz, Paul Wintersteller, Paul Wintersteller   +8 more
doaj   +1 more source

Mega‐Depressions on the Cocos Ridge: Links Between Volcanism, Faults, Hydrothermal Circulation, and Dissolution

Geochemistry, Geophysics, Geosystems, 2022
High‐resolution bathymetry and three‐dimensional seismic data along the Cocos Ridge reveal a 245 km2 field of ∼1–4 km in diameter seafloor depressions. The seafloor depressions are part of a two‐tiered honeycomb pattern.
Jared W. Kluesner, Eli A. Silver, Nathan L. Bangs, César R. Ranero, Stephanie Nale, James Gibson, Kirk D. McIntosh   +6 more
doaj   +1 more source

Thermally Significant Fluid Seepage Through Thick Sediment on the Juan de Fuca Plate Entering the Cascadia Subduction Zone

Geochemistry, Geophysics, Geosystems, 2023
We use heat flux measurements colocated with seismic reflection profiles over a buried basement high on the Juan de Fuca plate ∼25 km seaward of the deformation front offshore Oregon to test for the presence of hydrothermal circulation in the oceanic ...
Benjamin Norvell, Thomas Kyritz, Glenn A. Spinelli, Robert N. Harris, Kristin Dickerson, Anne M. Tréhu, Suzanne Carbotte, Shuoshuo Han, Brian Boston, Michelle Lee, The CHINOoK Project Science Party   +10 more
doaj   +1 more source

Characterization of Geochemistry in Hydrothermal Sediments From the Newly Discovered Onnuri Vent Field in the Middle Region of the Central Indian Ridge

Frontiers in Marine Science, 2022
The recently discovered Onnuri hydrothermal vent field (OVF) is a typical off-axis ultramafic-hosted vent system, located on the summit of the dome-like ocean core complex (OCC) at a distance of ∼12 km from the ridge axis along the middle region of the ...
Dhongil Lim, Dhongil Lim, Jihun Kim, Jihun Kim, Wonnyon Kim, Jonguk Kim, Dongsung Kim, Le Zhang, Kyungun Kwack, Zhaokai Xu, Zhaokai Xu, Zhaokai Xu   +11 more
doaj   +1 more source

Ar-40/Ar-39 dating of mesothermal, orogenic mineralization in a low-angle reverse shear zone in the Lower Palaeozoic of the Anglo-Brabant fold belt, Belgium [PDF]

, 2002
A
Boven, A., Dewaele, Stijn, Muchez, Ph.
core   +2 more sources

Can Marine Hydrothermal Vents Be Used as Natural Laboratories to Study Global Change Effects on Zooplankton in a Future Ocean?

Journal of Marine Science and Engineering, 2023
It is claimed that oceanic hydrothermal vents (HVs), particularly the shallow water ones, offer particular advantages to better understand the effects of future climate and other global change on oceanic biota. Marine hydrothermal vents (HVs) are extreme
Hans-Uwe Dahms, Subramani Thirunavukkarasu, Jiang-Shiou Hwang   +2 more
doaj   +1 more source

Cap rock efficiency of geothermal systems in fold-and-thrust belts: Evidence from paleo-thermal and structural analyses in Rosario de La Frontera geothermal area (NW Argentina) [PDF]

, 2016
Cap rock characterization of geothermal systems is often neglected despite fracturing may reduce its efficiency and favours fluid migration. We investigated the siliciclastic cap rock of Rosario de La Frontera geothermal system (NW Argentina) in order to
Aldega, L., Bigi, S., Chiodi, Agostina Laura, Corrado, Sveva, Di Paolo, L., Giordano, G., Invernizzi, C., Maffucci, R.   +7 more
core   +2 more sources