Results 41 to 50 of about 38,766 (189)

Asthenospheric Flow From East Asia to the Philippine Sea Plate Revealed by Rj‐MCMC Inversion of Surface Waves

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The Pacific and Philippine Sea Plate subductions have resulted in and controlled the development of a typical trench‐arc‐back‐arc system in NE Asia since the Cenozoic.
Yanzhe Zhao, Zhen Guo, Yanbin Wang
doaj   +1 more source

Isotope-geochemical heterogeneity of pliocene-quaternary volcanics from kamchatka and the asthenospheric diapirism problem

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
Isotope-geochemical material for Pliocene-Quaternary volcanoes of the Kamchatka region is generalized on a cartographic basis. The Sr-isotope anomalies of moderate and elevated radiogenicity, geochemically confirmed, are spatially conjugated.
Колосков А.В.
doaj   +1 more source

The role of edge-driven convection in the generation of volcanism – Part 1: A 2D systematic study [PDF]

open access: yesSolid Earth, 2021
The origin of intraplate volcanism is not explained by plate tectonic theory, and several models have been put forward for explanation. One of these models involves edge-driven convection (EDC), in which cold and thick continental lithosphere is ...
A. Manjón-Cabeza Córdoba   +2 more
doaj   +1 more source

Correlated Changes Between Volcanic Structures and Magma Composition in the Faial Volcanic System, Azores

open access: yesFrontiers in Earth Science, 2018
The interaction between magmatic and tectonic processes in ocean intraplate volcanism yields insights into the ascent and transport of magmas. Many oceanic intraplate studies lack a temporal component and do not consider changes in tectonic regime and/or
René H. W. Romer   +3 more
doaj   +1 more source

Glacial rebound causes intraplate volcanism off South Greenland

open access: yes, 2011
Plate tectonic mechanisms explain most of the dominant types of volcanism. Intraplate volcanism has been attributed to hot spots associated with mantle plumes, though alternative explanations have been proposed for settings not fed by plumes.
Stein, Rüdiger   +5 more
core   +1 more source

Cenozoic Uplift and Volcanism of Hangai Dome, Central Mongolia Triggered by Lower Mantle Upwellings

open access: yesGeophysical Research Letters, 2023
The mechanisms of surface uplift of Hangai Dome (>2 km) and formation of Cenozoic intraplate volcanism in central Mongolia remain vigorously debated.
Yingkai Wu, Xuewei Bao
doaj   +1 more source

A subduction and mantle plume origin for Samoan volcanism

open access: yesScientific Reports, 2018
The origin of Samoan volcanism in the southwest Pacific remains enigmatic. Whether mantle melting is solely caused by a mantle plume is questionable because some volcanism, here referred to as non-hotspot volcanism, defies the plume model and its linear ...
Vincent Strak, Wouter P. Schellart
doaj   +1 more source

The distribution of intraplate volcanism in the Pacific Ocean basin: a spectral approach [PDF]

open access: yesGeophysical Journal International, 1982
Summary. Although the major linear island chains in the Pacific Ocean basin have been extensively studied, relatively little attention has been given to the origin of the numerous seamounts and oceanic islands that are concentrated in the western Pacific.
Ribe, N, Watts, A
openaire   +2 more sources

Mantle and Crustal Xenoliths in a Tephriphonolite From La Palma (Canary Islands): Implications for Phonolite Formation at Oceanic Island Volcanoes

open access: yesFrontiers in Earth Science, 2022
The occurrence of mantle-derived peridotite xenoliths in phonolitic melts is a rare phenomenon, and is commonly ascribed to a mantle origin of the phonolite.
Andreas Klügel   +2 more
doaj   +1 more source

Papanin Ridge and Ojin Rise Seamounts (Northwest Pacific): Dual Hotspot Tracks Formed by the Shatsky Plume

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Although previous findings support an origin of the Shatsky Rise igneous plateau (Northwest Pacific) through interaction of a mantle plume with a mid‐ocean ridge triple junction, the evidence for the involvement of a mantle plume is equivocal.
Antje Dürkefälden   +7 more
doaj   +1 more source

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