Results 21 to 30 of about 124,197 (248)

Recycled gabbro signature in hotspot magmas unveiled by plume–ridge interactions [PDF]

, 2011
Lavas erupted within plate interiors above upwelling mantle plumes have chemical signatures that are distinct from midocean ridge lavas. When a plume interacts with a mid-ocean ridge, the compositions of both their lavas changes, but there is no ...
AE Saal, AV Sobolev, AW Hofmann, C Chauvel, C. W. Devey, CA Stein, CW Devey, DW Graham, G Ito, G Ito, G Ito, GM Yaxley, J Phipps Morgan, J-G Schilling, JM O’Connor, KM Haase, KM Haase, KM Haase, KM Haase, KS Harpp, M Maia, M Maia, M Ozima, MF Coffin, MG Braun, N. A. Stroncik, NA Stroncik, PS Hall, R Dasgupta, RA Keller, S Huang, TA Bianco   +31 more
core   +1 more source

MeltMigrator : a MATLAB-based software for modeling three-dimensional melt migration and crustal thickness variations at mid-ocean ridges following a rules-based approach [PDF]

, 2017
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 18 (2017):
Bai, Hailong, Behn, Mark D., Montesi, Laurent G. J.   +2 more
core   +1 more source

Compositional stratification in the deep mantle [PDF]

, 1999
A boundary between compositionally distinct regions at a depth of about 1600 kilometers may explain the seismological observations pertaining to Earth's lower mantle, produce the isotopic signatures of mid-ocean ridge basalts and oceanic island basalts ...
Hager, Bradford H., Hilst, R.D. van der, Kellogg, louise H.   +2 more
core   +1 more source

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

Geophysical 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, Fan Zhang, Xubo Zhang, Tao Zhang, Jian Lin, Zhiyuan Zhou, Jiangyang Zhang   +6 more
doaj   +1 more source

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

Geochemistry, 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, D. Pałgan, C. W. Devey, T. S. Lux, S. Petersen, D. Thorhallsson, A. Tomkowicz, S. Brix   +7 more
doaj   +1 more source

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

Geosystems 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, Jiaxuan Wang, Weihong He, Shengdong Wang, Yadong Xu, Xionghua Zhang, Bowen Song, Xiaohu Kou, Guocan Wang   +8 more
doaj   +1 more source

Geochemistry of mafic extrusive lavas in the Bayankhongor Ophiolite, Mongolia

Mongolian 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, Turbold Sukhbaatar, Gerel Ochir, Oyunbold Sukhbaatar, Odgerel Dashdorjgochoo   +4 more
doaj   +1 more source

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

Oceanography, 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, DelWayne R. Bohnenstiehl, Deborah K. Smith   +2 more
doaj  

Origin of Alkaline Basaltic Intrusive Rocks in an Exhumed Accretionary Complex: Implications for Past Petit‐Spot Volcanism in the Ocean

Geochemistry, Geophysics, Geosystems, 2023
Accreted basaltic rocks are expected to provide information on intraplate volcanism in the oceans. Basaltic rocks, originating from mid‐ocean ridges, plateaus, and seamounts, have been reported from exhumed accretionary complexes. However, basaltic rocks
Ginta Motohashi, Takashi Sano, Kohtaro Ujiie, Madison Frank   +3 more
doaj   +1 more source

Transfer learning reconstructs submarine topography for global mid-ocean ridges

International 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, Sijin Li, Yanzi Yan, Bingqing Sun, Josef Strobl, Liyang Xiong   +5 more
doaj   +1 more source