Results 81 to 90 of about 1,147,354 (242)

Plagioclase as evidence of magmatic evolution in the Zafarqand porphyry copper deposit, NE Isfahan

Journal of Economic Geology, 2018
Introduction Chemical and textural zoning patterns preserved in plagioclase phenocrysts can provide useful information on parameters that constrains the changing melt compositions in the magma systems.
Maryam Aminoroayaei Yamini , Faramarz Tutti, Mohammad Reza Aminoroayaei Yamini, Jamshid Ahmadian   +3 more
doaj   +1 more source

Thermo‐Mechanical Controls on Central‐Vent Caldera Collapse

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Large‐scale magmatic systems are associated with catastrophic caldera‐forming eruptions, posing hazards to millions near active volcanoes. Despite occurring across a range of sizes, the physics driving caldera collapse remain incompletely understood. While large calderas have received considerable attention, moderately sized calderas (∼5–10 km)
Pascal S. Aellig, Albert de Montserrat, Boris J. P. Kaus   +2 more
wiley   +1 more source

Petrological characteristics and volatile content of magma of the 1979, 1989, and 2014 eruptions of Nakadake, Aso volcano, Japan

Earth, Planets and Space, 2018
Petrological observations and chemical analyses of melt inclusions in scoria were used to investigate the magma ascent and eruption processes of the 1979, 1989, and 2014 eruptions of Nakadake, Aso volcano, Japan. Major elements and sulfur contents of the
Genji Saito, Osamu Ishizuka, Yoshihiro Ishizuka, Hideo Hoshizumi, Isoji Miyagi   +4 more
doaj   +1 more source

Evaluating Fragmentation Detection in Block Caves Using Synthetic Muon Tomography

Geophysical Prospecting, Volume 74, Issue 7, September 2026.
ABSTRACT Muon tomography is a geophysical imaging technique with growing application across a range of geological and industrial settings. By observing the arrival of naturally occurring muons, it is possible to reconstruct subsurface density distributions in three dimensions.
M. A. McLean, R. Seikel, F. Scutti, A. R. Duffy   +3 more
wiley   +1 more source

Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array

Applied Sciences
The Arxan Volcanic Field (AVF) is an active volcanic region in Northeast Asia, and its last eruption occurred approximately 2000 years ago. Its eruption mechanism remains unknown.
Lijuan Qu, You Tian, Cai Liu, Hongli Li
doaj   +1 more source

Thermodynamic Model for Energy-Constrained Open-System Evolution of Crustal Magma Bodies Undergoing Simultaneous Recharge, Assimilation and Crystallization: the Magma Chamber Simulator

, 2014
The Magma Chamber Simulator quantifies the impact of simultaneous recharge, assimilation and crystallization through mass and enthalpy balance in a multicomponent^multiphase (melt þ solids (cid:2) fluid) composite system.
W. Bohrson, F. Spera, M. Ghiorso, Guy A. Brown, J. Creamer, A. Mayfield   +5 more
semanticscholar   +1 more source

Making Mining Licit: Gold, Commodification, and the Everyday Performance of Law in Colombia

American Anthropologist, Volume 128, Issue 3, Page 480-493, September 2026.
ABSTRACT Ethnographies of resource‐making have shown that the extraction of resource value from objects is premised on obviating the emplaced lifeworlds that surrounded objects before they traveled to consumer markets. Much of this literature looks at such supply‐chain disentanglement from the viewpoint of corporate and formal regulatory practices ...
Jesse Jonkman
wiley   +1 more source

Numerical Modeling Of Pressure Source Of Sinabung Volcano Based On GPS Data In 2011-2012 Using Particle Swarm Optimization (PS0)

Computational and Experimental Research in Materials and Renewable Energy, 2020
Mogi Model with particle swarm optimization (PSO) scheme have been applied to the local GPS data of Sinabung Volcano during 2011 to 2012 to receive subsurface parameters as pressure sources in terms of misfit and inversion model parameter.
Ratih Kumalasari, Wahyu Srigutomo, Irwan Meilano, Hendra Gunawan   +3 more
doaj   +1 more source

Small‐scale adaptation to geothermal soil heating in a perennial herb revealed by combining crosses and transplantations

New Phytologist, Volume 251, Issue 5, Page 3008-3020, September 2026.
Path diagrams showing the results of piecewise structural equation models examining how fitness (total number of seeds in flowering individuals) of Cerastium fontanum depended on temperature at planting site, temperature difference, mating type, and flowering time (FFD, first flowering date) in each of the two study years.
Alicia Valdés, Vigdís F. Helmutsdóttir, Bryndís Marteinsdóttir, Johan Ehrlén   +3 more
wiley   +1 more source

An Inflating Upper Mantle Magma Reservoir Beneath the Tip of the Condor Seamount, Azores Revealed by Rapid‐Response Ocean‐Bottom‐Seismometer Data

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Condor Seamount is among the most seismically active regions on the Azores Plateau. In December 2019, an earthquake crisis occurred at the tip of the seamount, which was strongly felt on nearby islands. Two months after the peak of the crisis, we deployed a local network of five ocean‐bottom seismometers around the seamount, recording ...
Yingchen Liu, Neil Mitchell, Dietrich Lange, Ingo Grevemeyer   +3 more
wiley   +1 more source