Results 91 to 100 of about 23,609 (212)
Fault textures in volcanic conduits: evidence for seismic trigger mechanisms during silicic eruptions. [PDF]
, 2005 It is proposed that fault textures in two dissected rhyolitic conduits in Iceland preserve evidence for shallow seismogenic faulting within rising magma during the emplacement of highly viscous lava flows. Detailed field and petrographic analysis of such
Dingwell, DB, Tuffen, H
core
, 2019 Ecosystem-bedrock interactions power the biogeochemical cycles of Earth's shallow crust, supporting life, stimulating substrate transformation, and spurring evolutionary innovation.
Amistadi, Mary K. +18 more
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Geochemistry, Geophysics, GeosystemsNatural radiogenic isotopes (primarily 87Sr/86Sr) from hot springs in the Upper Geyser Basin of the Yellowstone Plateau volcanic field and associated rocks were used to evaluate groundwater flow patterns, water‐rock reactions, and the extent of mixing ...
James B. Paces +4 more
doaj +1 more source
Plume-related granite-rhyolite magmatism
Литосфера, 2020 Plume-related magmatism is widespread and its existence is well-founded. Mostly, plume-related magmatism is represented by trap rocks, oceanic island basalts (OIB) and oceanic plateau basalts (OPB), although the composition of plume-related igneous products is very diverse. Among others, silicic igneous rocks – rhyolites and granites – play a prominent
openaire +2 more sources
Sponge Spicules in Rhyolitic Ashes [PDF]
Geological Magazine, 1942 A discussion as to the true nature of bodies found in rhyolitic ash in Malaya originally supposed to be sponge spicules.
openaire +1 more source
Potential Enhanced Geothermal Systems in Western Poland—Petrothermal and Geochemical Issues
EnergiesThis study evaluates the potential of enhanced geothermal systems (EGSs) in Poland, focusing on formations composed by igneous rocks, such as crystalline rocks of the Karkonosze pluton and volcanic rocks of the Gorzów Block.
Krzysztof Labus +2 more
doaj +1 more source
Electrical conductivity measurements of rhyolitic glass at high pressure and high temperature
Earth, Planets and SpaceWe performed electrical conductivity measurements of rhyolite glasses across the glass transition temperature at 1 GPa. Our experimental data show that, in the Arrhenius plot, the conductivity of rhyolite with 0.2 wt% H2O has an inflection point between ...
Yusuke Haraguchi +5 more
doaj +1 more source
, 2008 I describe an experimental apparatus used to perform deformation experiments relevant to volcanology. The apparatus supports low-load, high-temperature deformation experiments under dry and wet conditions on natural and synthetic samples. The experiments recover the transient rheology of complex (melt ± porosity ± solids) volcanic materials during ...
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Nature and origin of secondary mineral coatings on volcanic rocks of the Black Mountain, Stonewall Mountain, and Kane Springs Wash volcanic centers, southern, Nevada [PDF]
The following subject areas are covered: (1) genetic, spectral, and LANDSAT Thematic Mapper imagery relationship between desert varnish and tertiary volcanic host rocks, southern Nevada; (2) reconnaissance geologic mapping of the Kane Springs Wash ...
Chenevey, Michael J. +3 more
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Geochemistry, Geophysics, GeosystemsTo improve our understanding of hydrothermal activity on the Yellowstone Plateau volcanic field, we collected and analyzed a large data set of δ2H, δ18O, and the 3H concentrations of circum‐neutral and alkaline waters.
Shaul Hurwitz +5 more
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