Results 31 to 40 of about 11,816 (290)

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

open access: yes, 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   +16 more
core   +1 more source

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

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

Rotating horizontal convection with meridional ridges

open access: yesFrontiers 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

Phase Diagrams of Carbonate Materials at High Pressures, with Implications for Melting and Carbon Cycling in the Deep Earth

open access: yesGeophysical Monograph Series, Page 137-165., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov   +3 more
wiley  

+5 more sources

Mid-Ocean Ridges

open access: yesEos, Transactions American Geophysical Union, 2013
The global mid-ocean ridge system is a primary focus for energy transfer from the Earth's interior to the lithosphere, biosphere, hydrosphere, and atmosphere. In a coordinated effort to understand the causes and predict the consequences of mantle-driven physical, chemical, and biological fluxes through the ridge-crest system, the RIDGE (Ridge Inter ...
  +4 more sources

Semidiurnal internal tide in the Atlantic Ocean

open access: yesRussian 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

MORGen: an Algorithm to Compute Spreading Centre and Transform Geometries from Simple Initial Plate Boundaries and Euler Rotations

open access: yesTektonika, 2023
The age structure of the global ocean floor is a key feature in paleogeographic reconstructions, which in turn forms the quantitative basis for Earth System Science.
Thomas van der Linden   +1 more
doaj   +1 more source

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

open access: yesGeochemistry, 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   +3 more
doaj   +1 more source

Moytirra: Discovery of the first known deep-sea hydrothermal vent field on the slow-spreading Mid-Atlantic Ridge north of the Azores [PDF]

open access: yes, 2013
Geological, biological, morphological, and hydrochemical data are presented for the newly discovered Moytirra vent field at 45oN. This is the only high temperature hydrothermal vent known between the Azores and Iceland, in the North Atlantic and is ...
Coughlan, M.   +43 more
core   +1 more source

Geodynamic Models of Melt Generation and Extraction at Mid-Ocean Ridges [PDF]

open access: yesOceanography, 2012
It is widely accepted that plate divergence at mid-ocean ridges drives mantle flow, mantle melting, and the formation of new oceanic crust. However, many of the details of this process remain obscure because of the inaccessibility of the mantle to direct
Patricia M. Gregg   +3 more
doaj  

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