Results 61 to 70 of about 1,408 (194)

Deep Origin and Shallow Launch for the Etna 122 B.C. Mafic Plinian Eruption

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Basaltic Plinian eruptions challenge our understanding of explosive volcanism. The 122 B.C. Plinian eruption of Etna ranks among the most powerful mafic explosive events known. Here, we combine volatile barometry of 122 B.C. from olivine‐hosted melt and fluid inclusions with comparative data from the sub‐Plinian Fall Stratified eruption at ...
M. Gavrilenko, E. Gazel, K. Dayton, A. Barth, T. Plank, E. G. Huggins, B. Houghton   +6 more
wiley   +1 more source

Thermal Structure of Eastern Australia's Upper Mantle and Its Relationship to Cenozoic Volcanic Activity and Dynamic Topography

Geochemistry, Geophysics, Geosystems, 2021
Spatio‐temporal changes of upper mantle structure play a significant role in generating and maintaining surface topography. Although geophysical models of upper mantle structure have become increasingly refined, there is a paucity of geologic constraints
P. W. Ball, K. Czarnota, N. J. White, M. Klöcking, D. R. Davies   +4 more
doaj   +1 more source

A Machine Learning Approach for Volcanic Eruption Mass Estimation

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Estimation of total volcanic erupted mass—the primary metric of eruption magnitude—is typically performed post‐eruption relying on dense monitoring of ground‐based seismology, gravity and deformation instrumentation, and therefore exists for only ∼100 of ∼1280 volcanoes worldwide.
Naeim Mousavi, Javier Fullea, S. Mostafa Mousavi   +2 more
wiley   +1 more source

Shear‐Velocity Structure and Dynamics Beneath the Sicily Channel and Surrounding Regions of the Central Mediterranean Inferred From Seismic Surface Waves

Geochemistry, Geophysics, Geosystems, 2022
The evolution of the Sicily Channel Rift Zone (SCRZ) is thought to accommodate the regional tectonic stresses of the Calabrian subduction system. Much of the observations we have today are either limited to the surface or to the upper crust or deeper ...
M. R. Agius, F. Magrini, G. Diaferia, E. D. Kästle, F. Cammarano, C. Faccenna, F. Funiciello, M. van derMeijde   +7 more
doaj   +1 more source

Intraplate Lithospheric Deformation Forms Large Volcanic Regions

, 2023
Large igneous systems form either in areas of thin lithosphere at or near plate boundaries or by mantle-melting anomalies in intraplate settings with comparatively thicker lithosphere. Decompression melting or flux melt dominate at plate boundaries. Intraplate magmatism relates to thermal or compositional anomaly in the mantle.
César R. Ranero, Laura Gomez de la Peña, Manel Prada, Estela Jimenez, Patricia Cadenas, Alejandra Neri, Irene Merino, Arantza Ugalde, Ingo Grevemeyer   +8 more
openaire   +2 more sources

Seismic Imaging Reveals Ongoing Modification of Craton Margins in Northeast Asia

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Cratonic margins are commonly modified, yet the processes responsible remain debated. The Korean Peninsula, situated between adjacent cratons, the Japan Trench, and a back‐arc system, provides a natural setting to investigate this problem. Using 4 years of dense seismic observations, we image upper‐mantle structure beneath the peninsula with P‐
Hwaju Lee, YoungHee Kim, Maximiliano J. Bezada, Hyunwoo Lee   +3 more
wiley   +1 more source

Evidence for Petit‐Spot Volcanism in the Puerto Rico Trench

Geophysical Research Letters
Petit‐spot volcanism occurs in intraplate settings along the outer rise of subducting plates. Here we present evidence for petit‐spot type of volcanism from multibeam bathymetry and backscatter data from the Puerto Rico Trench (PRT).
Nicholas Harmon, William Danforth, Uri Ten Brink, J. Pablo Canales, Shuoshuo Han, Elizabeth Vanacore, Jose‐Luis Granja‐Bruña, Wayne Baldwin, Seth Ackerman, Liam Moser, Elisaveta Sokolkova   +10 more
doaj   +1 more source

Major element data, 40Ar/39Ar step-heating and step-crushing data for anorthoclase megacrysts from the Newer Volcanic Province, south-eastern Australia

Data in Brief, 2018
We provide the dataset associated with the research article “40Ar/39Ar ages of alkali feldspar xenocrysts constrain the timing of intraplate basaltic volcanism” Matchan et al. [1].
E.L. Matchan, D. Phillips, E. Traine, D. Zhu   +3 more
doaj   +1 more source

Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China

Geophysical Research Letters, 2022
Over 2 years of broadband seismic data from 27 temporary stations deployed in the Arxan‐Chaihe Volcanic Field (ACVF) provides us a valued opportunity to study mantle deformation and related geodynamic processes in NE China intraplate region. We estimated
Zhengyang Qiang, Qingju Wu, Yonghua Li, Fengxue Zhang   +3 more
doaj   +1 more source

Geologically Current Rates of Hotspot Motion

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Hotspots, sites of mid‐plate volcanism or of excessive volcanism along a plate boundary, overlie plumes of hot rock that rise in the solid state from Earth's mantle. Previously estimated rates of lateral hotspot motion relative to a hotspot reference frame since Late Cretaceous time range from ∼3 to ∼80 mm/yr.
Kevin M. Gaastra, Richard G. Gordon, Gregory Mifflin   +2 more
wiley   +1 more source