Results 31 to 40 of about 1,509,179 (223)

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

Oceanography, 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, Laura B. Hebert, Laurent G.J. Montési, Richard F. Katz   +3 more
doaj  

A Highly Depleted and Subduction‐Modified Mantle Beneath the Slow‐Spreading Mohns Ridge

Geochemistry, Geophysics, Geosystems, 2022
The Mohns Ridge is a very slow‐spreading ridge that, together with the Knipovich Ridge, marks the boundary between the North American and Eurasian plates in the Norwegian‐Greenland Sea.
A. Bjerga, H. H. Stubseid, L. E. R. Pedersen, A. Beinlich, R. B. Pedersen   +4 more
doaj   +1 more source

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

Tektonika, 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, Douwe van Hinsbergen   +1 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]

, 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., Dorschel, Boris, M. Coughlan, Lim, Aaron, Carlsson, Jens, J. Carlsson, Morris, K., A. Antoniacomi, Collins, P.; id_orcid, Green, Darryl R. H., B. Dorschel, Murton, B., D. Green, V. Nye, Collins, Patrick, Judge, Maria, J. Copley, Green, D., Murton, Bramley J., P. Collins, Wheeler, A.J., Carlsson, J., Benzie, J., Murton, B.J., Morris, Kristy J., Dorschel, B., A. Lim, Nye, V., Copley, Jonathan T., M. Judge, Collins, P., K. Morris, Lim, A., Judge, M., J. Benzie, Coughlan, Mark, B. Murton, Copley, J., Benzie, John, Wheeler, A. J., A. J. Wheeler, Antoniacomi, A., Nye, Verity, Antoniacomi, Alice   +43 more
core   +1 more source

Active Long-Lived Faults Emerging Along Slow-Spreading Mid-Ocean Ridges [PDF]

Oceanography, 2012
In the classic mid-ocean ridge model, new seafloor is generated through a combination of magmatic diking feeding lava flows at the spreading axis, and the formation of short-offset, high-angle normal faults that dip toward the axis.
Deborah K. Smith, Javier Escartín, Hans Schouten, Johnson R. Cann   +3 more
doaj  

Morphology and tectonics of the Mid-Atlantic Ridge, 7°–12°S

, 2003
We present swath bathymetric, gravity, and magnetic data from the Mid-Atlantic Ridge between the Ascension and the Bode Verde fracture zones, where significant ridge–hot spot interaction has been inferred.
T. A. Minshull, Brozena, J.M., N. J. Bruguier, Minshull, T.A., J. M. Brozena, Bruguier, N.J.   +5 more
core   +1 more source

Radiocarbon constraints on the extent and evolution of the South Pacific glacial carbon pool

Nature Communications, 2016
On glacial/interglacial timescales CO2 might have been sequestered from the atmosphere and stored within the deep ocean. Here, the authors show that an old and CO2-rich water mass occupied the glacial South Pacific between ∼2,000 and 4,300 m water depth ...
T. A. Ronge, R. Tiedemann, F. Lamy, P. Köhler, B. V. Alloway, R. De Pol-Holz, K. Pahnke, J. Southon, L. Wacker   +8 more
doaj   +1 more source

Hydrothermal Discharge During Submarine Eruptions: The Importance of Detection, Response, and New Technology [PDF]

Oceanography, 2012
Submarine volcanic eruptions and intrusions construct new oceanic crust and build long chains of volcanic islands and vast submarine plateaus. Magmatic events are a primary agent for the transfer of heat, chemicals, and even microbes from the crust to ...
Edward T. Baker, William W. Chadwick Jr., James P. Cowen, Robert P. Dziak, Kenneth H. Rubin, Daniel J. Fornari   +5 more
doaj  

Multiphase Tectonic Process With Slab Dynamics in the Northern East China Sea Shelf Basin

Geological Journal, EarlyView.
Megasequence 1 characterised by Palaeocene extension and differential subsidence driven by the rollback of the subducting Izanagi Plate. Megasequence 2 records a kinematic reorganisation of the East Asian margin, transition from a rifting to a compressional regime.
Juhwan Woo, Won‐Ki Kim, Chul Woo Rhee, Seungyeol Lee   +3 more
wiley   +1 more source

Global Evidence for Off‐Axis Flexural Modification of Abyssal Hill Faults at Mid‐Ocean Ridges

Geophysical Research Letters
Young oceanic lithosphere flexes as axial topography decays across mid‐ocean ridge shoulders, yet this deformation has been quantified at only a few segments, leaving its global expression poorly constrained.
Ran Li, Zhonglan Liu, Shuming Feng, Teng Peng, Yuan Wang   +4 more
doaj   +1 more source