Results 21 to 30 of about 1,640,713 (238)

Modification of Along‐Ridge Topography and Crustal Thickness by Mantle Plume and Oceanic Transform Fault at Ultra‐Slow Spreading Mohns Ridge

open access: yesGeophysical Research Letters, 2023
The mantle plumes modify geophysical and geochemical features along and across mid‐ocean ridges. Despite abundant studies of plume‐ridge interaction, few geodynamic studies focus on the Arctic Ocean.
Yinuo Zhang   +6 more
doaj   +1 more source

Geochemistry of mafic extrusive lavas in the Bayankhongor Ophiolite, Mongolia

open access: yesMongolian Geoscientist
This study presents new geochemical data on pillow lavas from the Bayankhongor Ophiolite in western Mongolia, revealing compositions that range from sub-alkaline to alkaline basalts.
Bayarmaa Batsukh   +4 more
doaj   +1 more source

Hydroacoustic Monitoring of Oceanic Spreading Centers: Past, Present, and Future [PDF]

open access: yesOceanography, 2012
Mid-ocean ridge volcanism and extensional faulting are the fundamental processes that lead to the creation and rifting of oceanic crust, yet these events go largely undetected in the deep ocean.
Robert P. Dziak   +2 more
doaj  

Variations in Volcanism and Tectonics Along the Hotspot‐Influenced Reykjanes Ridge

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Mapping and sampling four sections of the slow‐spreading Reykjanes Ridge provide insight into how tectonic and volcanic activity varies with distance from the Iceland plume.
M. Le Saout   +7 more
doaj   +1 more source

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

open access: yes, 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   +5 more
core   +1 more source

Reconstructed ocean plate stratigraphy sequences from the Permian subduction-accretionary complex in the Qinghai-Tibet Plateau

open access: yesGeosystems and Geoenvironment, 2022
The Permian Tethys subduction-accretionary complex (SAC) in the Qinghai-Tibet Plateau (QTP) is distributed in six geotectonic provinces, which are known as the Zongwulong-Ganjia, the Western Kunlun, the Eastern Kunlun, the Ganzi-Litang, the Xijinwulan ...
Kexin Zhang   +8 more
doaj   +1 more source

Transfer learning reconstructs submarine topography for global mid-ocean ridges

open access: yesInternational Journal of Applied Earth Observations and Geoinformation
Mid-ocean ridges are unique, tectonically active geographical units on Earth that profoundly control the ocean environment and dynamics at the global scale.
Yinghui Jiang   +5 more
doaj   +1 more source

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

open access: yesOceanography, 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   +3 more
doaj  

Hydrography and flow in the rift valley of the Mid-Atlantic Ridge

open access: yes, 2000
Slow-spreading mid-ocean ridges such as the Mid-Atlantic Ridge are characterized by deep axial rift valleys which are isolated from the water on the ridge flanks.
Thurnherr, Andreas M.
core   +2 more sources

The discovery of new deep-sea hydrothermal vent communities in the Southern Ocean and implications for biogeography [PDF]

open access: yes, 2012
Since the first discovery of deep-sea hydrothermal vents along the Galápagos Rift in 1977, numerous vent sites and endemic faunal assemblages have been found along mid-ocean ridges and back-arc basins at low to mid latitudes.
Hawkes, Jeffrey   +221 more
core   +1 more source

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