Results 61 to 70 of about 411 (170)

Magma Plumbing During the 2014–2015 Eruption of Fogo (Cape Verde Islands)

Frontiers in Earth Science, 2020
Phenocrysts in volcanic rocks are recorders of magmatic processes that have occurred at depth before and during a volcanic eruption. Our petrological investigations of stratigraphically controlled tephrite and phonotephrite samples from the latest ...
Andreas Klügel, Simon Day, Markus Schmid, Bruno Faria   +3 more
doaj   +1 more source

Structure of the Mantle Keel of the Wyoming Craton and Its Relationship to Intracratonic Deformation and Magmatism

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Wyoming Craton is often cited as an example of decratonization, implying the removal of its lithospheric keel. However, numerous geophysical imaging studies indicate the presence of thick mantle lithosphere beneath much of the Wyoming Craton.
M. J. Bezada, Z. Zhu, H. Ford, J. S. Byrnes   +3 more
wiley   +1 more source

Mount Etna as a Leaking Pipe of Magmas From the Low Velocity Zone

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Mount Etna, one of the most active volcanoes on Earth, exhibits unusual characteristics in terms of its geological setting, effusion rate, and volatile content. Mount Etna is closely related to the subduction of the Ionian plate below Eurasia, but, chemically, Mount Etna lavas are akin to intraplate magmatism.
Sebastien Pilet, Jules Reymond, Laetitia Rochat, Rosa Anna Corsaro, Massimo Chiaradia, Luca Caricchi, Othmar Müntener   +6 more
wiley   +1 more source

Mantle Dynamic Topography of the Fringing Oceanic Basins of Antarctica

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Dynamic mantle processes are known to influence oceanic basins with implications for ocean circulation and climate. This study exploits an interdisciplinary approach to probe present‐day mantle and lithosphere beneath Antarctica's fringing oceanic basins to better understand sub‐crustal processes and implications for the continental realm.
A. C. A. Dunn, N. J. White, R. Larter, P. L. Slay, M. C. Holdt   +4 more
wiley   +1 more source

Intraplate Basalts in Eastern Continental China Record the Subduction History of the Pacific Plate

Geophysical Research Letters
To assess whether intraplate magmatism in eastern continental China records the subduction history of the Pacific plate, we plotted elemental compositions of the volcanic rocks in this region since the Early Cretaceous as a function of age.
Pu Sun, Yaoling Niu, Pengyuan Guo, Meng Duan, Xiaohong Wang, Hongmei Gong   +5 more
doaj   +1 more source

Global Detection and Morphological Characterization of Seamounts With Weakly Supervised Deep Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract Seamounts are submarine volcanic features that record the tectonic and magmatic evolution of Earth's interior, yet their global distribution remains poorly resolved due to sparse high‐resolution bathymetric coverage. We present a weakly supervised deep learning framework that integrates gravity and bathymetric data to enable global‐scale ...
Zhengfa Bi, Xinming Wu, Xiaohua Xu, Nori Nakata   +3 more
wiley   +1 more source

Volcanism and seismicity in the Indo-Australian seismic belt: manifestations of intraplate tectonics

Annals of Geophysics, 1978
Disregarding the mid-oceanic ridges, the oceanic part of the Indo-<br />Australian Seismic Belt is the longest, seismically active zone in the<br />world-ocean. It begins west of Ceylon and runs towards Australia.
P. HEDERVARI
doaj   +1 more source

Mantle dynamics beneath the Pacific Northwest and the generation of voluminous back‐arc volcanism

Geochemistry, Geophysics, Geosystems, 2012
The Pacific Northwest (PNW) has a complex tectonic history and over the past ∼17 Ma has played host to several major episodes of intraplate volcanism.
Maureen D. Long, Christy B. Till, Kelsey A. Druken, Richard W. Carlson, Lara S. Wagner, Matthew J. Fouch, David E. James, Timothy L. Grove, Nicholas Schmerr, Chris Kincaid   +9 more
doaj   +1 more source

Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography. [PDF]

Sci Rep, 2021
Obayashi M, Yoshimitsu J, Suetsugu D, Shiobara H, Sugioka H, Ito A, Isse T, Ishihara Y, Tanaka S, Tonegawa T.   +9 more
europepmc   +1 more source

Secondary Plumes Formation Controlled by Interaction of Thermochemical Mantle Plumes With the Mantle Transition Zone

Geophysical Research Letters
The causes and global distribution of intraplate volcanism remain poorly understood, particularly the occurrence of scattered magmatism unrelated to large igneous provinces (LIPs).
X. Zhu, A. Balázs, T. Gerya, Z. Sun
doaj   +1 more source