Results 21 to 30 of about 1,509,179 (223)

Petrological systematics of mid-ocean ridge basalts: Constraints on melt generation beneath ocean ridges [PDF]

, 1992
Mid-ocean ridge basalts (MORB) are a consequence of pressure-release melting beneath ocean ridges, and contain much information concerning melt formation, melt migration and heterogeneity within the upper mantle.
Langmuir, CH, Klein, EM, Plank, T
core   +1 more source

Extreme Heterogeneity in Mid‐Ocean Ridge Mantle Revealed in Lavas From the 8°20′N Near‐Axis Seamount Chain

Geochemistry, Geophysics, Geosystems, 2021
Lavas that have erupted at near‐axis seamounts provide windows into mid‐ocean ridge mantle heterogeneity and melting systematics which are not easily observed on‐axis at fast‐spreading centers.
Molly Anderson, V. Dorsey Wanless, Michael Perfit, Ethan Conrad, Patricia Gregg, Daniel Fornari, W. Ian Ridley   +6 more
doaj   +1 more source

A joint geochemical–geophysical record of time-dependent mantle convection south of Iceland [PDF]

, 2014
The North Atlantic V-Shaped Ridges (VSRs) provide a spatially extensive and clear record of unsteady mantle convective circulation over >40 My>40 My.
Jones, S.M.; id_orcid, White, Nicholas J., Murton, Bramley, Maclennan, John, Jones, Steve, Walters, Rachel J., Walters, R.L., White, Nicky, Maclennan, J., Murton, Bramley J., Fitton, J.G., Fitton, J. G., Jones, S.M., Fitton, J. Godfrey, White, N.J., Murton, B.J., Jones, Stephen M.   +16 more
core   +1 more source

The influence of mid-ocean ridges on euphausiid and pelagic ecology [PDF]

, 2009
Chapters 1 & 2. Euphausiids comprise a major component of ecosystems in the pelagic realm, the world’s largest habitat, but basin scale drivers of euphausiids diversity and abundance are poorly understood. Mid-Ocean Ridges are the largest topographical
Letessier, Tom Bech, Letessier, TB, Brierley, AS, Cox, Martin J., Brierley, Andrew Stuart, Cox, MJ, Letessier, Tom B.   +6 more
core   +1 more source

Hydrothermal plumes as hotspots for deep-ocean heterotrophic microbial biomass production

Nature Communications, 2021
Hydrothermal vents are biogeochemically important, but their contribution to the carbon cycle is poorly constrained. Here the authors build a biogeochemical model that estimates autotrophic and heterotrophic production rates of microbial communities ...
Cécile Cathalot, Erwan G. Roussel, Antoine Perhirin, Vanessa Creff, Jean-Pierre Donval, Vivien Guyader, Guillaume Roullet, Jonathan Gula, Christian Tamburini, Marc Garel, Anne Godfroy, Pierre-Marie Sarradin   +11 more
doaj   +1 more source

Control of the symmetry of plume-ridge interaction by spreading ridge geometry [PDF]

, 2010
The Iceland, Gal´apagos and Azores plumes have previously been identified as interacting asymmetrically with adjacent spreading centres. We present evidence that the flow fields in these plume heads are radially symmetric, but the geometry of the mid ...
Maclennan, J., O. Shorttle, Jones, S. M., J. Maclennan, Shorttle, O., Shorttle, O, S. M. Jones, Maclennan, J, Jones, Stephen; id_orcid   +8 more
core   +1 more source

Rotating horizontal convection with meridional ridges

Frontiers in Marine Science, 2022
According to recent studies, the large-scale effect of bottom topography on the ocean overturning circulation can be considered as a result of bottom enhancement of turbulent mixing in the abyssal ocean.
Yu Zhang, Zhengguang Zhang, Wei Wang
doaj   +1 more source

A three-dimensional study of a crustal low velocity region beneath the 9°03′N overlapping spreading center [PDF]

, 2003
Overlapping spreading centers (OSCs) play a key role in models of magma distribution at fast spreading ridges. To investigate the relationship between ridge-axis discontinuities and magma supply, we conducted a three-dimensional seismic reflection and ...
Harding, A.J., Pye, J, Kent, GM, Tong, CH, Tong, C.H., Sinha, MC, White, R.S., van Avendonk, H.J.A., Hobbs, R.W., Pye, J.W., Bazin, S, Harding, AJ, Barton, PJ, Hobbs, RW, Kent, G.M., Barton, P.J., Sinha, M.C., HJA, VA, Bazin, S., Orcutt, J.A., Singh, SC, Orcutt, JA, White, RS, Singh, S.C.   +23 more
core   +1 more source

Semidiurnal internal tide in the Atlantic Ocean

Russian Journal of Earth Sciences, 2020
Analysis of the generation of internal tides over submarine ridges in the Atlantic Ocean based on numerical modeling and measurements on moorings is considered.
Morozov E G, Ansorge I , Vinokurov D V
doaj   +1 more source

Crystallization of Superfast‐Spreading Oceanic Crust (ODP Hole 1256D, Pacific Ocean): Constraints From Zircon Geochronology

Geochemistry, Geophysics, Geosystems, 2023
Studies of oceanic crust, which covers a large proportion of the Earth's surface, have provided significant insight into the dynamics of crustal accretion processes at mid‐ocean ridges.
C. Johan Lissenberg, Daniel J. Condon, Andrew J. Smye, Ryo Anma   +3 more
doaj   +1 more source