Results 21 to 30 of about 5,658 (224)

The Impact of Ice Caps on the Mechanical Stability of Magmatic Systems: Implications for Forecasting on Human Timescales

open access: yesFrontiers in Earth Science, 2022
Monitoring the activity of subglacial volcanoes along the Aleutian Arc in Alaska is important to the safety of local populations, as well as air traffic flying through the region.
Lilian C. Lucas   +4 more
doaj   +1 more source

Thermal properties of vesicular rhyolite [PDF]

open access: yes, 1994
Thermal diffusivity of rhyolite melt and rhyolite foam (70–80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length 50–55 mm, diameter 22 mm) of rhyolite melt and foam have been derived by heating samples of ...
Bagdassarov, Nikolai   +1 more
core   +1 more source

The incrementally zoned Miocene Ayagaures ignimbrite (Gran Canaria, Canary Islands) [PDF]

open access: yes, 2010
The 20–25 m thick trachyphonolitic Ayagaures ignimbrite cooling unit [(AY); 11.8 Ma] exposed over 250 km2 (onshore volume ca. 4.5 km3 DRE) is the uppermost and most voluminous cooling unit of the Middle Fataga Formation (MFF), part of the Fataga Group ...
Hans-Ulrich Schmincke   +5 more
core   +1 more source

Carbon Redox Chemistry

open access: yesGeophysical Monograph Series, Page 67-75., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Choong‐Shik Yoo
wiley  

+1 more source

Magmatic karst reveals dynamics of crystallization and differentiation in basaltic magma chambers

open access: yesScientific Reports, 2021
An understanding of magma chamber dynamics relies on answering three important yet highly controversial questions: where, why, and how magma chambers crystallize and differentiate.
Willem Kruger, Rais Latypov
doaj   +1 more source

Magma chamber formation by magma intrusion into the Earth’s crust

open access: yesComputational Continuum Mechanics, 2018
<p>The main mechanism of transport of magma in the Earth’s crust is the formation of cracks, or dikes, through which the melt moves towards the surface under the action of buoyancy forces and tectonic stresses.
Ivan Utkin, Oleg Melnik
openaire   +2 more sources

Micro-analytical perspectives on the Bishop Tuff and its Magma Chamber [PDF]

open access: yes, 2015
New in situ major and trace element analytical data are presented for crystals (sanidine, plagioclase, biotite, orthopyroxene, clinopyroxene) and matrix glasses from juvenile materials representing the full Bishop Tuff sequence from the earliest fall ...
Millet, Marc-Alban   +9 more
core   +1 more source

Geometry of the magma chamber beneath Damavand volcano (N Iran) from a joint study of gravity and magnetic data [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering
Imaging the intra-sediment magma chamber in the Damavand region, northern Iran, is beyond the resolution of the local seismic observations. Gravity anomalies can precisely image the lateral extension of magma reservoir.
Vahid Ebrahim Zadeh Ardestani   +2 more
doaj   +1 more source

The large-scale surface uplift in the Altiplano-Puna region of Bolivia: A parametric study of source characteristics and crustal rheology using finite element analysis [PDF]

open access: yes, 2013
This paper focuses on the driving mechanism behind a 70 km wide region of ground uplift centered on Uturuncu volcano, in the Altiplano-Puna region of southern Bolivia.
Hickey, James   +2 more
core   +1 more source

Magma Chamber Detected Beneath an Arc Volcano With Full‐Waveform Inversion of Active‐Source Seismic Data

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Arc volcanoes are underlain by complex systems of molten‐rock reservoirs ranging from melt‐poor mush zones to melt‐rich magma chambers. Petrological and satellite data indicate that eruptible magma chambers form in the topmost few kilometres of the crust.
K. Chrapkiewicz   +9 more
doaj   +1 more source

Home - About - Disclaimer - Privacy