Results 41 to 50 of about 55,232 (202)

South Atlantic Transect: Variations in Oceanic Crustal Structure at 31°S

Geochemistry, Geophysics, Geosystems, 2020
We present an analysis of geophysical data acquired along a transect of 0–62 Ma crust located on the western flank of the Mid‐Atlantic Ridge at 31°S; all crust was formed at the same ridge segment.
G. L. Christeson, R. S. Reece, D. A. Kardell, J. D. Estep, A. Fedotova, J. A. Goff   +5 more
doaj   +1 more source

North Atlantic Western Boundary Currents Are Intense Dissolved Organic Carbon Streams

Frontiers in Marine Science, 2020
In the North Atlantic, there are two main western boundary currents related to the Atlantic Meridional Overturning Circulation (AMOC): the Gulf Stream flowing northward and the Deep Western Boundary Current (DWBC) flowing southward.
Marcos Fontela, Marcos Fontela, Fiz F. Pérez, Herlé Mercier, Pascale Lherminier   +4 more
doaj   +1 more source

Heterogeneity in mantle carbon content from CO2-undersaturated basalts

Nature Communications, 2017
Melting dynamics are affected by the amount of carbon in the Earth’s mantle. Le Voyeret al. report undegassed carbon concentrations from olivine-hosted melt inclusions from the Mid-Atlantic Ridge finding that carbon content varies by two orders of ...
M. Le Voyer, K.A. Kelley, E. Cottrell, E.H. Hauri   +3 more
doaj   +1 more source

Copepod distribution and production in a Mid-Atlantic Ridge archipelago

Anais da Academia Brasileira de Ciências, 2014
The Saint Peter and Saint Paul Archipelago (SPSPA) are located close to the Equator in the Atlantic Ocean. The aim of this study was to assess the spatial variations in the copepod community abundance, and the biomass and production patterns of the three
PEDRO A.M.C. MELO, MAURO DE MELO JÚNIOR, SILVIO J. DE MACÊDO, MOACYR ARAUJO, SIGRID NEUMANN-LEITÃO   +4 more
doaj   +1 more source

40Ar/39Ar dating reveals over 30 million years of plume-ridge interaction formed the Rio Grande Rise

Communications Earth & Environment
The Rio Grande Rise (RGR) oceanic plateau exhibits distinctly broad morphology compared to the linear, age-progressive Walvis Ridge (WR), despite both originating from the Tristan-Gough (T-G) plume.
Peter C. Davidson, Anthony A. P. Koppers, Cornelia Class, William W. Sager, Daniel Heaton   +4 more
doaj   +1 more source

Morphology and phylogeny of two new species of deep-sea mushroom soft corals (Octocorallia, Corallidae, Anthomastinae) from the Southern Mid-Atlantic Ridge [PDF]

Zoosystematics and Evolution
Members of the subfamily Anthomastinae Verrill, 1922, commonly known as mushroom soft corals, are characterized by their capitate or mushroom-shaped red colonies and large autozooids. Deep-sea mushroom corals of this subfamily remain poorly documented in
Xinlong Li, Ningxia Xu, Meiling Ge, Xuying Hu, Mengna Li, Zongling Wang, Xuelei Zhang, Qinzeng Xu   +7 more
doaj   +3 more sources

First record of Eurythenes thurstoni Stoddart & Lowry, 2004 (Crustacea: Amphipoda: Lysianassoidea) from the South Mid-Atlantic Ridge

Latin American Journal of Aquatic Research, 2014
The lysianassoid species Eurythenes thurstoni Stoddart & Lowry, 2004 is recorded for the first time to the Southern Atlantic Ocean, with material collected from the South Mid-Atlantic Ridge during the MAR-ECO Project expeditions.
Adriana Quadra, Rayane Sorrentino, André R Senna, Cristiana S Serejo   +3 more
doaj  

Submarine Topography and Several Bottom Sediments around Prince Olav and Prince Harald Coasts, Antarctica

Antarctic Record, 1964
The deep sea floor between Africa and Antarctica is divided into two provinces by the continuation of Mid-Atlantic Ridge. The bottom sediments on the continental slope around Prince Olav Coast and Amundsen Bay are hemipelagic clays which are rich in ...
Takahiro SATO
doaj   +1 more source

Research of ore elements migration forms in the hydrothermal solutions of the Mid-Atlantic ridge

Известия высших учебных заведений: Геология и разведка, 2016
On the basis of geological and hydrogeochemical analysis, the issue of forming of hydrothermal plumes in Atlantic Ocean is considered. Forms of the ore elements migration in hydrothermal solutions of the Logachev vent field (14°45' N) were researched ...
S. M. Sudarikov, M. V. Zmievskii
doaj   +2 more sources

Catalogue of source mechanisms and overview of present-day stress fields in the western region of the Africa–Eurasia plate boundary

Frontiers in Earth Science
Complex deformation is observed along the plate boundary between the Africa and Eurasia plates, this complexity is highlighted by the faulting mechanism changing from normal faulting at the Mid-Atlantic Ridge to thrust and strike-slip faulting in the ...
Farida Ousadou, Abdelhakim Ayadi, Mourad Bezzeghoud   +2 more
doaj   +1 more source