Results 51 to 60 of about 905,308 (330)

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

open access: yesFrontiers 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   +11 more
doaj   +1 more source

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

open access: yesJournal of Geophysical Research: Solid Earth, 2019
Previous seismic studies suggest that hydrothermal processes are active only within young oceanic crust (
D. Kardell   +4 more
semanticscholar   +1 more source

Geological constraints for a conceptual evolutionary model of the slope deformations affecting Mt. Nuovo at Ischia (Italy) [PDF]

open access: yes, 2015
ischia island was the scenario of several Holocene slope in- stability events occurred at different scales, from shallow mass movements, triggered by meteo-climatic forcing, up to massive rock slope failures such as large debris avalanches these last ...
DELLA SETA, Marta   +6 more
core   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Study on seafloor hydrothermal systems circulation flow and heat transfer characteristics

open access: yesMathematical Biosciences and Engineering, 2022
<abstract> <p>In this work, the numerical simulation study of the hydrothermal flow and heat transfer process in the porous rock under 30 MPa pressure was developed. The flow and heat transfer characteristics of hydrothermal in rocks with different porosities are studied by changing the porosity of the rock.
Yi Ren   +7 more
openaire   +3 more sources

Upper Crustal Vp/Vs Ratios at the Endeavour Segment, Juan de Fuca Ridge, From Joint Inversion of P and S Traveltimes: Implications for Hydrothermal Circulation

open access: yesGeochemistry Geophysics Geosystems, 2019
The Endeavour segment of the Juan de Fuca Ridge is one of the most active and long‐lived hydrothermal areas of the mid‐ocean ridge system. However, the permeability structure that gives rise to long‐term venting at well‐established fields, such as the ...
Eunyoung Kim   +6 more
semanticscholar   +1 more source

Structural and Mineralogical Characterization of a Fossil Hydrothermal System Located at the Outermost Front of the Southern Apennines Fold-and-Thrust Belt

open access: yesGeofluids, 2019
Aiming at investigating the hydrothermal circulation along the eastern flank of the Vulture volcano, along the outermost edge of the southern Apennine fold-and-thrust belt (ftb), we studied the fossil hydrothermal alteration that mineralized a ...
Paolo Fulignati   +6 more
doaj   +1 more source

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

open access: yes, 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

The Galapagos Spreading Centre: Lithospheric Cooling and Hydrothermal Circulation [PDF]

open access: yesGeophysical Journal International, 1974
Summary The spatial pattern of cooling near a spreading ridge crest was investigated with a suite of 71 precisely-navigated heat-flow stations on the Galapagos spreading centre, East Pacific, near 86"W longitude. Stations are on crust less than 1.0 My old on which bathymetry and sediment distribution are well known.
Roger N. Anderson   +3 more
openaire   +2 more sources

Sediment mixing in the tropical Pacific and radiolarian stratigraphy

open access: yesGeochemistry, Geophysics, Geosystems, 2012
The reworking of older radiolarian microfossils into near‐surface sediments of the tropical Pacific has long been the source of confusion for the development of radiolarian stratigraphy and of puzzlement over the mechanism(s) that could effect such ...
Ted C. Moore Jr.   +2 more
doaj   +1 more source

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