Results 41 to 50 of about 449 (169)

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

Geophysical 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

Estimates of the Temperature and Melting Conditions of the Carpathian‐Pannonian Upper Mantle From Volcanism and Seismology

Geochemistry, Geophysics, Geosystems, 2020
What drives the formation of basaltic melts beneath intraplate volcanoes not associated with extensive thermal anomalies or lithospheric extension? Detailed constraints on the melting conditions and source region are imperative to resolve this question ...
Antoine J. J. Bracco Gartner, Dan McKenzie   +1 more
doaj   +1 more source

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

Geochemistry, 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, Jörg Geldmacher, Maxim Portnyagin, Dieter Garbe‐Schönberg, Reinhard Werner, Dietmar Müller, Folkmar Hauff, Kaj Hoernle   +7 more
doaj   +1 more source

Segmented Moho Uplift and Implications for Magmatic Underplating Beneath the Datong Basin

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Understanding how the deep crust responds to coupled tectonic and magmatic processes is essential for deciphering intracontinental rifting. We apply high‐resolution passive‐source reverse time migration to teleseismic P‐wave receiver functions recorded by a dense seismic array to image the Moho beneath the Datong Basin. Our observations reveal
Chunlong Li, Huai Zhang, Yu Jeffrey Gu, Yicun Guo, Pei He, Guangyao Yin, Yaolin Shi   +6 more
wiley   +1 more source

Plume‐Fed Magmatic Fluids Weakened Crust and Promoted a Large Intraplate Earthquake in Northern Hainan (South China)

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images reveal two shallow low‐velocity zones extending to ∼10 km depth: a stronger ...
Lue Yang, Lun Li, Chen Cai, Jialong He, Hongyi Li, Yulong Xue, Jinming Zhang, Yuan Gao, Ziwei Li, Rui Gao   +9 more
wiley   +1 more source

Ductile Crustal Flow Facilitates Intraplate Volcanism: Seismic Evidence From Tengchong, China

Geochemistry, Geophysics, Geosystems
The mechanisms and processes driving intraplate volcanism remain incompletely understood despite significant advances in recent decades. Here, we use high‐resolution multiparameter full‐waveform inversion to image the three‐dimensional seismic structure ...
Xingpeng Dong, Kai Yang
doaj   +1 more source

The depth geodynamic state and its correlation with the surface geological and geophysical parameters along the sublatitudinal profile of Eurasia

Геодинамика и тектонофизика, 2019
A cross‐sections of longitudinal (P) and transverse (S) wave anomalies (attribute δ(VP/VS)) is constructed along the sublatitudinal profile from the Atlantic Ocean to the Pacific Ocean across the regions of the latest Eurasian volcanism. It is correlated
S. Yu. Sokolov
doaj   +1 more source

Inception and Plate Evolution of the Lau Back‐Arc Basin From Plate Boundary Refinements

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Back‐arc basins are important settings for crustal growth that form in response to both near and far‐field tectonic influences. To better understand the processes that control back‐arc basin initiation and evolution, we present a refined model of the kinematics of opening of the Lau Basin, embedded in a global plate model.
Alan T. Baxter, Mark D. Hannington, Kaitlyn Breker, Christopher Galley, Marc L. Fassbender, Erin Bethell   +5 more
wiley   +1 more source

Building the Andean Crust at ∼35°S: Arc Geochemistry Reveals Cretaceous Thinning and Rapid Neogene Thickening

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Quantification of the timing and mechanisms of crustal thickening in Cordilleran orogenic hinterlands remains challenging. We address this in the Andes using whole‐rock geochemistry and zircon petrochronology from a >70 Myr volcanic record in the Tinguiririca valley of Chile (∼35° ${}^{\circ}$S), which captures a pivotal transition from ...
Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Andrés Echaurren, Matías Barrionuevo, Jesse G. Mosolf, Michelle L. Foley, Mihai N. Ducea   +8 more
wiley   +1 more source

Testing the Seismic Detectability of Magmatic Underplating Beneath the Hawaiian Ridge: A Synthetic Wavefield Approach

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Magmatic underplating beneath the Hawaiian Ridge has been inferred from early active‐source and teleseismic studies, whereas more recent active‐source seismic imaging and reprocessed legacy data have not identified a distinct underplated layer.
Megumi Fujimoto, Robert A. Dunn
wiley   +1 more source