Results 61 to 70 of about 1,147,354 (242)

Cyclic activity of the Fuego de Colima volcano (Mexico): insights from satellite thermal data and nonlinear models [PDF]

open access: yesSolid Earth, 2019
The Fuego de Colima volcano (Mexico) shows a complex eruptive behavior, with periods of rapid and slow lava dome growth punctuated by explosive activity.
S. Massaro   +5 more
doaj   +1 more source

Revisiting olivine‐phyric shergottites: Pyroxene crystallization pressure and the role of undercooling

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Shergottites are the most abundant meteorites from Mars and a major source of information on magma reservoirs, transport, and eruption, particularly in the late Hesperian northern hemisphere. Conflicting interpretations have arisen on the crystallization conditions of pyroxene in olivine‐phyric shergottites.
Roger H. Hewins   +2 more
wiley   +1 more source

Insights Into Magma Chamber Processes From the Relationship Between Fabric and Grain Shape in Troctolitic Cumulates

open access: yesFrontiers in Earth Science, 2020
The strength of foliations defined by shape preferred orientation of plagioclase in troctolitic cumulates from the Layered Series of the Skaergaard intrusion, and the Rum Eastern Layered Intrusion, increases as the grains become more tabular, due either ...
Marian B. Holness   +3 more
doaj   +1 more source

Fault‐Controlled Permeability: A Key Parameter in Geothermal Electricity Production Assessment

open access: yesTerra Nova, EarlyView.
ABSTRACT Geothermal energy is central to the global green energy transition, but its development has long focused on regions with positive thermal anomalies. Through a semi‐quantitative global‐scale review and spatial analysis of 361 geothermal sites, we show that 56.2% of global geothermal electricity production occurs in regions with thermal ...
Vincent Roche, Gaétan Milesi
wiley   +1 more source

The 1723 AD violent Strombolian and phreatomagatic eruption at Irazu volcano (Costa Rica) [PDF]

open access: yes, 2013
The largest of the recorded historic eruptions at Irazú volcano began on February 16, 1723 and lasted until at least December 11. We here critically examine deposits of this eruption exposed on the summit of Irazú. Our reconstruction of the eruption is
Schmincke, Hans-Ulrich, Alvarado, G. E.
core  

Magma Chamber Model of Batur Caldera, Bali, Indonesia: Compositional Variation of Two Facies, Large-Volume Dacitic Ignimbrites

open access: yesIndonesian Journal on Geoscience, 2015
DOI:10.17014/ijog.2.2.111-124Batur is one of the finest known calderas on Earth, and is the source of at least two major ignimbrite eruptions with a combined volume of some 84 km3 and 19 km3.
Igan S. Sutawidjaja   +2 more
doaj   +1 more source

Chromitite layers indicate the existence of large, long-lived, and entirely molten magma chambers

open access: yesScientific Reports, 2022
The classical paradigm of the ‘big magma tank’ chambers in which the melt differentiates, is replenished, and occasionally feeds the overlying volcanos has recently been challenged on various grounds.
Rais Latypov   +8 more
doaj   +1 more source

From a long-lived upper-crustal magma chamber to rapid porphyry copper emplacement : reading the geochemistry of zircon crystals at Bajo de la Alumbrera (NW Argentina).

open access: yes, 2016
The formation of world class porphyry copper deposits reflect magmatic processes that take place in a deeper and much larger underlying magmatic system, which provides the source of porphyry magmas, as well as metal and sulphur-charged mineralising ...
Y. Buret   +5 more
semanticscholar   +1 more source

Flow in an experimental micro–magma chamber [PDF]

open access: yesEos, Transactions American Geophysical Union, 1988
The chemical evolution and eruptive behavior of magmas may be controlled largely by convective processes within magma chambers. According to a recent National Research Council Report [Committee on Physics and Chemistry of Earth Materials, 1987], “the style of convection itself, whether it is turbulent, laminar, large‐scale, of multiple scales, tiered ...
Carroll, Michael R., Wyllie, Peter J.
openaire   +2 more sources

Climate and the Development of Magma Chambers [PDF]

open access: yesGeosciences, 2020
Whether magma accumulating in the crust develops into a persistent, eruptible magma body or an incrementally emplaced pluton depends on the energy balance between heat delivered to the bottom in the form of magma and heat lost out the top. The rate of heat loss to the surface depends critically on whether heat transfer is by conduction or convection ...
openaire   +2 more sources

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