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The mixing of magmas in plutonic and volcanic environments: Analogies and differences
Lithos, 2012Abstract Magma mixing processes have been widely recognized in both the plutonic and volcanic environments, but the quality and quantity of information that can be extracted from the two environments are substantially different. Understanding the advantages and limits associated with the study of plutonic and volcanic rocks is essential to establish ...
PERUGINI, Diego, POLI, Giampiero
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The Development of Magma Mixing in Space and Time
2021In this chapter we will provide an explanation for the occurrence of magmatic enclaves and flow structures observed in the rocks. According to numerical simulations and physical experiments, the formation of enclaves and flow structures tightly reflects the dynamics occurring in the magmatic masses.
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The magma mixing origin of mantled feldspars
Contributions to Mineralogy and Petrology, 1981The key to mantled feldspar genesis is epitaxial nucleation of plagioclase on K-feldspar or K-feldspar on plagioclase. Once this nucleation takes place there is a relatively straightforward process of crystal growth yielding “rapakivi” and “antirapikivi” textures.
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Simulation of magma mixing in refilled magma chambers driven by gas exsolution [PDF]
, 2006 The dynamics of convection in volatile-rich replenished magma chambers is studied by means of numerical simulations. Simulations are carried out with an appositely developed advanced finite element numerical code, named GALES, which solves the fundamental mass, momentum and energy equations for 2D transient, multicomponent, compressible to ...
Longo A. +3 more
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Torfajökull: A volcano dominated by magma mixing
Geology, 1984All postglacial (less than 10 000-yr-old) rhyolite eruptions from Iceland9s largest silicic center show evidence of admixture with basaltic magmas. The degrees of mixing vary from rare inclusions within host rhyolites to completely homogeneous blends with hybrid compositions.
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Magma mixing as a source for Pinatubo sulphur
Nature, 1997On 15 June 1991, a huge plinian eruption at Mount Pinatubo discharged 3.7–5.3 km3of pyroclastic material1, along with a minimum of 17 megatonnes of SO2 gas2,3. This represents the largest stratospheric SO2 cloud ever measured, and the SO2 generated in this eruption is believed to have had a significant effect on global climate2,4 and the ozone layer4 ...
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Decrypting Magma Mixing in Igneous Systems
Reviews in Mineralogy and Geochemistry, 2022Laumonier, Mickael +3 more
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The dynamics of magmas and mixing in fissure systems
The mixing and mingling of magmas are widespread occurrences in igneous systems that have important implications for the petrogenesis of magmatic systems, volcanic eruption triggers, and the severity of their hazards. This thesis examines the dynamics of these mixing and mingling processes within dykes, a near-vertical planar magma conduit that forms ...openaire +1 more source