Results 71 to 80 of about 392,695 (199)

Maars to calderas: end-members on a spectrum of explosive volcanic depressions

Frontiers in Earth Science, 2015
We discuss maar-diatremes and calderas as end-members on a spectrum of negative volcanic landforms (depressions) produced by explosive eruptions (note – we focus on calderas formed during explosive eruptions, recognizing that some caldera types are not ...
Danilo M. Palladino, Greg A. Valentine, Gianluca eSottili, Jacopo eTaddeucci   +3 more
doaj   +1 more source

The Mechanics of Multiphase Magmas: A Perspective from the Scale of Crystals and Bubbles to Magma Reservoirs

Annual Review of Earth and Planetary Sciences
The interplay between melt, crystals, and volatile bubbles controls the physical properties of magmas in Earth's crust, the rate of phase separation, and, by extension, chemical differentiation. The mechanical processes that couple crystals, bubbles, and melt are nonlinear, and their expression in magmatic systems can vary greatly with the relative ...
Huber, Christian, Bachmann, Olivier, Florez, Darien, Parmentier, E. M., Peč, Matěj, Latt, Jonas, Rambosson, Maxime, Das, Uthkarsh   +7 more
openaire   +2 more sources

Volcanic unrest as seen from the magmatic source: Reyðarártindur pluton, Iceland

Scientific Reports
How the Earth’s crust accommodates magma emplacement influences the signals that can be detected by monitoring volcano seismicity and surface deformation, which are routinely used to forecast volcanic eruptions.
Emma Rhodes, Steffi Burchardt, Sonja H. M. Greiner, Tobias Mattsson, Freysteinn Sigmundsson, Tobias Schmiedel, Abigail K. Barker, Taylor Witcher   +7 more
doaj   +1 more source

Crustal Shear‐Wave Velocity and Azimuthal Anisotropy Imaging Reveals the Merapi‐Merbabu‐Telomoyo Volcanic Chain, Central Java

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We present new results from ambient noise tomography and azimuthal anisotropy analysis of the DOMERAPI data set to investigate crustal structure beneath the Merapi‐Merbabu‐Telomoyo region in central Java. The 3D shear‐wave velocity (Vs) model reveals a prominent high‐Vs anomaly extending from south of Merapi through Merbabu to Telomoyo ...
Iqwal Ramadhan, Sri Widiyantoro, Zulfakriza, Jean‐Philippe Metaxian, Nicholas Rawlinson, Jean‐Paul Montagner, Tedi Yudistira   +6 more
wiley   +1 more source

Fault-controlled magma pathways driving seismicity and eruption risk in Eastern Turkey

Communications Earth & Environment
Many oceanic and some continental transform faults host coupled tectonic shear and magmatism, complicating seismic and volcanic hazards. Here we integrate high-resolution seismic tomography and three-dimensional finite-element modelling to investigate ...
Özgür Karaoğlu, Ivan Koulakov, Tuna Eken, Mohsen Bazargan, Taras Gerya, Luca Dal Zilio, Agust Gudmundsson   +6 more
doaj   +1 more source

Fault‐Controlled Plumbing System Beneath Lipari Volcanic Island Revealed by Seismic Matrix Imaging

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Lipari Island hosts an active magmatic–hydrothermal system, but its deep plumbing architecture remains poorly resolved due to strong seismic scattering. We apply passive seismic matrix imaging to public vertical‐component cross‐correlation functions from the dense 2018 Lipari nodal array, recovering relative‐reflectivity structures to ∼10 km ...
Jia Wei, Qiancheng Liu, Ling Chen
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

Insights Into Magma Reservoir Dynamics From a Global Comparison of Volcanic and Plutonic Zircon Trace Element Variability in Individual Hand Samples

Geochemistry, Geophysics, Geosystems
Trace element compositional trends in zircons separated from single hand samples have been used to infer dynamic processes in magma reservoirs. Here, we compile published zircon trace element chemistry to quantify any systematic difference between the ...
Barbara C. Ratschbacher, C. Brenhin Keller, Kari M. Cooper   +2 more
doaj   +1 more source

Re‐Evaluating the Thermogenic Decarbonation During Large Igneous Provinces Emplacement Using Temperature‐Dependent Thermal Properties

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Large Igneous Provinces emplacement drives mass extinctions through rapid carbon release, but the relative contributions of magmatic degassing versus thermogenic decarbonation remain debated. Here, we incorporate temperature‐dependent thermal parameters into models of contact metamorphism around intruding sills.
Yan Wang, Jianfeng Yang, Linpei Deng, Liang Zhao   +3 more
wiley   +1 more source

The Distinction Between Sn‐Mineralized and Sn‐Barren Granites in Sn Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Tin mineralization is commonly associated with highly evolved granites. However, not all highly evolved granitic rocks are mineralized with Sn. Comparative studies of Sn‐fertile and Sn‐barren granites can deepen our understanding of the key processes that lead to Sn enrichment in magmatic‐hydrothermal systems.
Cheng Xu, Weiqiang Li, Jia‐Xin She, Qian Li, Kui‐Dong Zhao, Xisheng Xu   +5 more
wiley   +1 more source